{"id":131,"date":"2020-09-23T02:40:30","date_gmt":"2020-09-23T02:40:30","guid":{"rendered":"https:\/\/www.fibermall.com\/?p=131"},"modified":"2023-12-15T09:08:59","modified_gmt":"2023-12-15T09:08:59","slug":"attentions-of-using-long-distance-transmission-optical-transceiver","status":"publish","type":"post","link":"https:\/\/www.fibermall.com\/blog\/attentions-of-long-distance-optical-transceiver.htm","title":{"rendered":"How to Use 10G SFP+ Long-distance SFP Module?"},"content":{"rendered":"\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">There are many k<span style=\"color: #333333;\">inds of 10G SFP + <\/span><\/span><span style=\"color: #333333;\"><span style=\"font-family: Helvetica;\">optical transceivers<\/span><span style=\"font-family: Helvetica;\">\u00a0in the market, some optical transceivers can transmit 80km, and <\/span><span style=\"font-family: Helvetica;\">some others<\/span><span style=\"font-family: Helvetica;\">\u00a0can transmit 100km, even 120km. <\/span><span style=\"font-family: Helvetica;\">D<\/span><span style=\"font-family: Helvetica;\">o you know the reason why the transmission distance is different? <\/span><span style=\"font-family: Helvetica;\">And why the long-distance optical receives, such as 80km 100km, and 120km optical transceivers, often burned down when we use them<\/span><span style=\"font-family: Helvetica;\">?<\/span><\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">As we know the transmission distance of an optical transceiver is related to optical power and receiver sensitivity,&nbsp;However,&nbsp;dispersion is also an important&nbsp;factor&nbsp;that affects the transmission distance of optical transceivers.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><span style=\"font-family: Helvetica;\">Fiber loss<\/span><span style=\"font-family: Helvetica;\">&nbsp;\u03b1<\/span><span style=\"font-family: Helvetica;\">&nbsp;(<\/span><span style=\"font-family: Helvetica;\">dB\/km<\/span><span style=\"font-family: Helvetica;\">) <\/span><span style=\"font-family: Helvetica;\">is <\/span><span style=\"font-family: Helvetica;\">one of the most important spe<\/span><span style=\"font-family: Helvetica;\">ci<\/span><span style=\"font-family: Helvetica;\">f<\/span><span style=\"font-family: Helvetica;\">i<\/span><span style=\"font-family: Helvetica;\">c<\/span><span style=\"font-family: Helvetica;\">a<\/span><span style=\"font-family: Helvetica;\">tions of an optical fiber because it largely determines the maximum distance between a transmitter and receiver.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">Therefore, users need to select an appropriate <\/span><span style=\"font-family: Helvetica;\">optical transceiver <\/span><span style=\"font-family: Helvetica;\">to meet their demands according to their networking situation. The actual transmission distance depends on the <\/span><span style=\"font-family: Helvetica;\">o<\/span><span style=\"font-family: Helvetica;\">utput<\/span><span style=\"font-family: Helvetica;\">&nbsp;<\/span><span style=\"font-family: Helvetica;\">power of the <\/span><span style=\"font-family: Helvetica;\">optical transceiver<\/span><span style=\"font-family: Helvetica;\">, the transmission attenuation of the optical <\/span><span style=\"font-family: Helvetica;\">fiber,<\/span><span style=\"font-family: Helvetica;\">&nbsp;and the <\/span><span style=\"font-family: Helvetica;\">r<\/span><span style=\"font-family: Helvetica;\">eceiver sensitivity of the <\/span><span style=\"font-family: Helvetica;\">optical transceiver<\/span><span style=\"font-family: Helvetica;\">.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">Transmitter optical power and <\/span><span style=\"font-family: Helvetica;\">r<\/span><span style=\"font-family: Helvetica;\">eceiver sensitivity are important parameters to affect transmission distance.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">O<\/span><span style=\"font-family: Helvetica;\">ptical transceiver <\/span><span style=\"font-family: Helvetica;\">estimated transmission distance:<\/span><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n\n\n\n<p><strong><span style=\"font-family: Helvetica; font-size: 12pt;\">L&nbsp;(max)&nbsp;=&nbsp;(Output Power-Receiver Sensitivity)&nbsp;\/&nbsp;\u03b1&nbsp;(dB\/km)<\/span><\/strong><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">&nbsp;<\/span><\/p>\n\n\n\n<div style=\"text-align: center;\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%; letter-spacing: 0.4pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">1<\/span><\/b><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%; letter-spacing: 0.4pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">0G <\/span><\/b><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%; letter-spacing: 0.4pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">SFP+ 10<\/span><\/b><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%; letter-spacing: 0.4pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">0km<\/span><\/b><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%; letter-spacing: 0.4pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">&nbsp;<\/span><\/b><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%;\">Optical and Electrical Characteristics<\/span><\/b><\/span><\/div>\n\n\n\n<p><span style=\"font-size: 12pt;\"><b style=\"text-indent: 67.85pt;\"><span style=\"line-height: 150%;\"><span style=\"font-family: Helvetica;\">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<\/span><\/span><\/b><\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Parameter<\/b><b><\/b><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Symbol<\/b><b><\/b><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Min<\/b><b><\/b><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Typical<\/b><b><\/b><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Max<\/b><b><\/b><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Unit<\/b><b><\/b><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Notes<\/b><b><\/b><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"8\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Transmitter<\/b><b><\/b><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Centre Wavelength<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">\u03bbc<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">1530<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">1550<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">1565<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">nm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Side-Mode Suppression Ratio<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">SMSR<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">30<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">&#8211;<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dB<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Average Output Power<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">P<sub><span style=\"vertical-align: sub;\">out<\/span><\/sub><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">+4.0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dBm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">1<\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Extinction Ratio<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">ER<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">6.0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dB<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Data Input Swing Differential<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<sub><span style=\"vertical-align: sub;\">IN<\/span><\/sub><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">180<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">850<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">mV<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">2<\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Input Differential Impedance<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Z<sub><span style=\"vertical-align: sub;\">IN<\/span><\/sub><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">90<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">100<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">110<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">\u03a9<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td rowspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">TX Disable<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Disable<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">2.0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Vcc<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Enable<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0.8<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td rowspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">TX Fault<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Fault<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">2.0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Vcc<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Normal<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0.8<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"8\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><b>Receiver<\/b><b><\/b><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Centre Wavelength<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">\u03bbc<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">1260<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">1600<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">nm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Receiver Sensitivity<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">-25<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dBm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">3<\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Receiver Overload<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">-7<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dBm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">3<\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">LOS De-Assert<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">LOS<sub><span style=\"vertical-align: sub;\">D<\/span><\/sub><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">-26<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dBm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">LOS Assert<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">LOS<sub><span style=\"vertical-align: sub;\">A<\/span><\/sub><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">-34<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dBm<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">LOS Hysteresis<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0.5<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">4<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">dB<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Data Output Swing Differential<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<sub><span style=\"vertical-align: sub;\">out<\/span><\/sub><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">300<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">900<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">mV<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">4<\/span><\/p>\n<\/td><\/tr><tr><td colspan=\"2\" rowspan=\"2\">\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">LOS<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">High<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">2.0<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Vcc<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><\/tr><tr><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">Low<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">0.8<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">V<\/span><\/p>\n<\/td><td>\n<p class=\"15\" style=\"text-align: center;\" align=\"center\">&nbsp;<\/p>\n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">The main reason why the dispersion appears is that the speed of&nbsp;<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">optical signals<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">&nbsp;with&nbsp;<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">the<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">&nbsp;different wavelength<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">s travel<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">&nbsp;<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">is&nbsp;<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">different in the&nbsp;<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">fiber<\/span><span style=\"text-indent: 67.85pt; font-family: Helvetica;\">. Then the optical signal with different wavelengths reaches the receiving end at a different time due to the accumulation of the transmission distance. After that, the pulse is widened, and then the signal values won\u2019t be able to distinguish.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">Signal dispersion is a consequence of factors such as intermodal dispersion,&nbsp;intramodal dispersion,&nbsp;polarization mode&nbsp;dispersion, and higher-order dispersion effects.&nbsp;The group velocity is the speed at which energy in a particular mode travels along with the fiber.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">The dispersion coefficient is the arrival time difference between the two optical waves that have a wavelength interval of 1nm and a light wave transmission length of 1km<\/span><span style=\"font-family: Helvetica;\">,<\/span><span style=\"font-family: Helvetica;\">&nbsp;the unit is PS\/nm<\/span><span style=\"font-family: Helvetica;\">&nbsp;<\/span><span style=\"font-family: Helvetica;\">km.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt; font-family: Helvetica;\">The relationship between dispersion and transmission rate.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt; font-family: Helvetica;\">The influence of group velocity dispersion on the specific ratio can introduce the criterion B \u25b3 T &lt; 1, which does not produce the overlapping of adjacent pulses<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">B is the bit rate, \u25b3 t is the pulse broadening caused by group velocity dispersion<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt; font-family: Helvetica;\">The higher the transmission rate is, the smaller dispersion should be controlled to ensure the transmission of the correct signal.<\/span><\/p>\n\n\n\n<p class=\"has-text-align-center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">\u25b3T=DL \u03b4\u03bb<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">L&#8212; transmission distance &nbsp;D&#8212;dispersion coefficient \u03b4\u03bb&#8212; a light source of rms\uff0c-20dB spectrum width \u03b4\u03bb-20\uff0c<\/span><\/p>\n\n\n\n<p class=\"has-text-align-center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">&nbsp;\u03b4\u03bb=\u03b4\u03bb-20 \/6.07 &nbsp;&nbsp;<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">The typical dispersion value of G.652 fiber is 17ps \/ nm \u00b7 km near the wavelength of 1550nm. After solving the attenuation problem of optical fiber, the dispersion limitation turns to the major problem that determines the transmission distance.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica; text-indent: 67.85pt;\">The dispersion tolerance of <a href=\"https:\/\/www.fibermall.com\/store-17014-10g-sfp.htm\" target=\"_blank\" rel=\"noreferrer noopener\">10G SFP+<\/a> is 1600ps\/nm (80km) and 2400ps\/nm (<a href=\"https:\/\/www.fibermall.com\/sale-420060-10g-sfp-zr-1550nm-120km.htm\" target=\"_blank\" rel=\"noreferrer noopener\">120km<\/a>).<\/span><b style=\"font-family: Helvetica; text-indent: 67.85pt;\"><span style=\"line-height: 150%;\">\u00a0 \u00a0 \u00a0 \u00a0\u00a0<\/span><\/b><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"\/\/www.fibermall.com\/editor\/img\/1606728993_71514.png\" alt=\"10G SFP+ DCM\" style=\"width:800px\" width=\"800\" title=\"10G SFP+ DCM\"\/><\/figure>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">Why are the optical transceiver of long-distance&nbsp;optical transceivers often&nbsp;damaged?<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">When the optical transceiver <\/span><span style=\"font-family: Helvetica;\">does not work<\/span><span style=\"font-family: Helvetica;\">, <\/span><span style=\"font-family: Helvetica;\">We usually<\/span><span style=\"font-family: Helvetica;\">&nbsp;need to check the <\/span><span style=\"font-family: Helvetica;\">DDM information of <\/span><span style=\"font-family: Helvetica;\">optical transceiver<\/span><span style=\"font-family: Helvetica;\">s<\/span><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"\/\/www.fibermall.com\/editor\/img\/1606729027_84706.png\" alt=\"10G SFP+ 80km DDM\" style=\"width:800px\" width=\"800\" title=\"10G SFP+ 80km DDM\"\/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><span style=\"font-family: Helvetica; font-size: 12pt;\"><br><\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">First, we test the transmitter is normal, with no sensitivity in the receiver test, RX monitoring display is -3.12dBm when no optical input and the module working current is too large. We assumed that is caused by the APD abnormality based on the phenomenon in the preliminary detection. After that, use the multimeter to measure the APD voltage and display the abnormality.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><span style=\"font-family: Helvetica;\">According to the above test and analysis results, it is determined that APD can\u2019t work normally due to the breakdown damage of large <\/span><span style=\"font-family: Helvetica;\">in<\/span><span style=\"font-family: Helvetica;\">put <\/span><span style=\"font-family: Helvetica;\">p<\/span><span style=\"font-family: Helvetica;\">ower.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">&nbsp;<\/span><span style=\"font-family: Helvetica;\">W<\/span><span style=\"font-family: Helvetica;\">hen removing the To case and observing it with a high-power microscope, we can see the APD has been damaged by the breakdown.<\/span><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"\/\/www.fibermall.com\/editor\/img\/1606729056_65305.png\" alt=\"10G SFP+ APD\" style=\"width:800px\" width=\"800\" title=\"10G SFP+ APD\"\/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><span style=\"font-family: Helvetica; font-size: 12pt;\">&nbsp;<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\"><a href=\"https:\/\/www.fibermall.com\/sale-420058-10g-sfp-zr.htm\" target=\"_blank\" rel=\"noreferrer noopener\">10G\u00a0SFP + 80km<\/a> receiver overload \uff1c &#8211; 7dBm. Please make sure the input power of APD is \u2264 &#8211; 6dBm when using it. Optical power is too large which\u00a0will cause the APD to break down instantaneously.<\/span><\/p>\n\n\n\n<p><strong><span style=\"font-size: 14pt;\"><span style=\"font-family: Helvetica;\">Summary<\/span><\/span><\/strong><\/p>\n\n\n\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: Helvetica;\">Review the following safety precautions to avoid injury and prevent damage to the optical transceiver.<\/span><\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">1. We should protect the optical interface&nbsp;of the optical modules&nbsp;and optical fiber cable to prevent dust cross-contamination; before using, wipe up the end faces of the optical fiber cable&nbsp;with cleaning paper; When we uninstall the optical modules, immediately replace dust protective caps on the&nbsp;optical modules and&nbsp;optical fiber cables.<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">2. To prevent damage, while using the optical transceiver, we should pay attention to the plug-in method and strength of the optical fiber cable. The cable should be inserted in parallel and gently to avoid product damage by improper use.<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Helvetica; font-size: 12pt;\">3. We should pay attention to the output current and voltage of the instrument when using it. The working voltage ranges from 3.3 \u00b1 0.5V. If the voltage exceeds the allowed working voltage or the voltage is unstable and the instantaneous pulse current is too large, It often causes&nbsp;optical&nbsp;module damage.<\/span><\/p>\n<style>\r\n\r\n        .lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }\r\n        .lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(100% - 20px);\r\n        }\r\n        .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n            \r\n            list-style: decimal;\r\n        }\r\n        .lwrp .lwrp-list-item img{\r\n            max-width: 100%;\r\n            height: auto;\r\n        }\r\n        .lwrp .lwrp-list-item.lwrp-empty-list-item{\r\n            background: initial !important;\r\n        }\r\n        .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n        .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n            \r\n                \r\n        }\r\n        @media screen and (max-width: 480px) {\r\n            .lwrp.link-whisper-related-posts{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-title{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-description{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-multi-container{\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-multi-container ul.lwrp-list{\r\n                margin-top: 0px;\r\n                margin-bottom: 0px;\r\n                padding-top: 0px;\r\n                padding-bottom: 0px;\r\n            }\r\n            .lwrp .lwrp-list-double,\r\n            .lwrp .lwrp-list-triple{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-row-container{\r\n                justify-content: initial;\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n            .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n                \r\n                    \r\n            }\r\n        }<\/style>\r\n<div id=\"link-whisper-related-posts-widget\" class=\"link-whisper-related-posts lwrp\">\r\n            <h3 class=\"lwrp-title\">Related Posts<\/h3>    \r\n        <div class=\"lwrp-list-container\">\r\n                                            <ul class=\"lwrp-list lwrp-list-single\">\r\n                    <li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/news\/400g-qsfp-dd-optical-transceiver.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Demand for 400G QSFP-DD Optical Transceiver to Rise in 2021<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/25g-cwdm-sfp28.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Understanding the 25G CWDM SFP28 Optical Transceiver Module<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/dgx-gh200.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Revolutionizing AI: The NVIDIA DGX GH200 AI Supercomputer<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/fec-optical-transmission-system.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">What is the FEC of an optical transmission system?<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/gigabit-ethernet.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Gigabit Ethernet: Understanding the True Gigabit Network Revolution<\/span><\/a><\/li>                <\/ul>\r\n                        <\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"<p>There are many kinds of 10G SFP + optical transceivers\u00a0in the market, some optical transceivers can transmit 80km, and some others\u00a0can transmit 100km, even 120km. Do you know the reason why the transmission distance is different? And why the long-distance optical receives, such as 80km 100km, and 120km optical transceivers, often burned down when we [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":319,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_wpscppro_dont_share_socialmedia":false,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"","_twitter_share_type":"","_linkedin_share_type":"","_pinterest_share_type":"","_linkedin_share_type_page":"","_instagram_share_type":"","_medium_share_type":"","_threads_share_type":"","_google_business_share_type":"","_selected_social_profile":[],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[2,30],"tags":[],"class_list":["post-131","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-fiber-optic-transceivers"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.13 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Use 10G SFP+ Long-distance SFP Module? | FiberMall<\/title>\n<meta name=\"description\" content=\"Do you know the reason why the transmission distances of transceivers are different? 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