{"id":2978,"date":"2022-10-14T09:36:31","date_gmt":"2022-10-14T09:36:31","guid":{"rendered":"https:\/\/www.fibermall.com\/blog\/?p=2978"},"modified":"2025-07-08T03:04:05","modified_gmt":"2025-07-08T03:04:05","slug":"how-to-use-100g-dwdm-qsfp28-pam4-optical-transceiver","status":"publish","type":"post","link":"https:\/\/www.fibermall.com\/blog\/100g-single-wavelength-dwdm-qsfp28-pam4.htm","title":{"rendered":"How\u00a0to\u00a0Use\u00a0100G\u00a0Single Wavelength DWDM\u00a0QSFP28\u00a0PAM4?"},"content":{"rendered":"\n<p><span style=\"font-size: 14pt;\"><strong><b>Product<\/b><\/strong> <strong><b>Description<\/b><\/strong><\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>100G Single Wavelength DWDM QSFP28 PAM4 pluggable optical transceiver modules are designed for multiple channel 100G transmission up to 100 km over standard G.652 single-mode optical fibers (SMF).<\/li>\n\n\n\n<li>Dispersion compensation is not required for short-reach applications (typically 0 to 2 km).<\/li>\n\n\n\n<li>For long and extended reach applications (2 km to 100 km), EDFA and DCM are required to compensate for fiber link loss and dispersion.<\/li>\n\n\n\n<li>The modules are based on our proprietary n CP4\u2122 Silicon Photonics Optical Engine, a PAM 4 &nbsp;modulator platform developed in-house.<\/li>\n\n\n\n<li>The module\u2019s optical interface utilizes a single wavelength on ITU-T 100 GHz spacing DWDM grid, and the signal is compatible with standard 100 GHz spacing DWDM filters.<\/li>\n\n\n\n<li>The module is Laser Class 1 compliant according to International Safety Standard IEC- 60825.<\/li>\n<\/ul>\n\n\n\n<p><strong><b><span style=\"font-size: 14pt;\">Features<\/span>&nbsp;<\/b><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Single-wavelength 100Gbps transmission<\/li>\n\n\n\n<li>Fixed wavelengths on ITU-T DWDM 100GHz spacing grid<\/li>\n\n\n\n<li>Supports 40 DWDM channels for standard products, expandable up to 48 channels<\/li>\n\n\n\n<li>Compatible with standard 100GHz DWDM filters<\/li>\n\n\n\n<li>Supports up to 100km DWDM transmission over G652 SM fiber (EDFA and DCM\/ DCF are required for more than 2km)<\/li>\n\n\n\n<li><a class=\"wpil_keyword_link\" title=\"Duplex LC connector\" href=\"https:\/\/www.fibermall.com\/blog\/duplex-lc-connector.htm\" data-wpil-keyword-link=\"linked\" target=\"_blank\">Duplex LC connector<\/a><\/li>\n\n\n\n<li>PAM4 optical signal with integrated FEC<\/li>\n\n\n\n<li>78Gbps CAUI-4 host interface compatible with standard 100GE switches<\/li>\n\n\n\n<li>Compliant with QSFP28 MSA SFF-8636<\/li>\n\n\n\n<li>QSFP28 MSA digital monitoring functions<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>Advantages<\/b><\/strong><\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lower Cost: may be less than half the price of Coherent 100G DWDM modules<\/li>\n\n\n\n<li>Low Latency: favorable for delay-sensitive applications<\/li>\n\n\n\n<li>Low Power Consumption ~ 4.5W typical<\/li>\n\n\n\n<li>Plugs directly into standard 100GE switches (including white-box switches)<\/li>\n\n\n\n<li>No OEO systems are required, which simplifies DWDM systems and reduces system cost<\/li>\n\n\n\n<li>Compatible with standard 100GHz spacing DWDM Mux\/Demux filters<\/li>\n\n\n\n<li>0 to 2km direct links are possible at a significantly reduced DWDM system cost<\/li>\n\n\n\n<li>DCM is not required<\/li>\n\n\n\n<li>EDFA is usually not required assuming typical filter &amp; fiber losses<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe title=\"How to connect 100G DWDM QSFP28 with CS-LC fiber connector?\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/I-nUXqNMZvQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>Competitive<\/b><\/strong> <strong><b>Matrix<\/b><\/strong><\/span><\/p>\n\n\n\n<table id=\"tablepress-122\" class=\"tablepress tablepress-id-122\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Parameters<\/th><th class=\"column-2\">Coherent\u00a0\u00a0DP-QPSK<\/th><th class=\"column-3\">Dual\u00a0Wavelength\u00a0\u00a0PAM4<\/th><th class=\"column-4\">Single\u00a0Wavelength\u00a0\u00a0PAM4<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">Power\u00a0Consumption<\/td><td class=\"column-2\">>10W<\/td><td class=\"column-3\">4.5W<\/td><td class=\"column-4\">5W<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Cost<\/td><td class=\"column-2\">High<\/td><td class=\"column-3\">Medium<\/td><td class=\"column-4\">Low<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">Transmission\u00a0Distance<\/td><td class=\"column-2\">Long<\/td><td class=\"column-3\">Up\u00a0to\u00a080km<\/td><td class=\"column-4\">Up\u00a0to\u00a0100km<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">Module\u00a0Form\u00a0Factor<\/td><td class=\"column-2\">CFP2\/QSFP-DD<\/td><td class=\"column-3\">QSFP28<\/td><td class=\"column-4\">QSFP28<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">DWDM\u00a0Grid<\/td><td class=\"column-2\">50GHz\u00a0Spacing<\/td><td class=\"column-3\">Customized<\/td><td class=\"column-4\">100GHz\u00a0Spacing<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">DWDM\u00a0Mux\/Demux<\/td><td class=\"column-2\">Standard<\/td><td class=\"column-3\">Customized<\/td><td class=\"column-4\">Standard<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">Direct\u00a0Link\u00a0without\u00a0EDFA<\/td><td class=\"column-2\">Yes<\/td><td class=\"column-3\">No<\/td><td class=\"column-4\">Up\u00a0to\u00a02km<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">Total\u00a0Capacity\u00a0per\u00a0Fiber<\/td><td class=\"column-2\">>80\u00a0x\u00a0100G<\/td><td class=\"column-3\">40\u00a0x\u00a0100G<\/td><td class=\"column-4\">40\u00a0x\u00a0100G\u00a0Standard\u00a0\u00a048\u00a0x\u00a0100G\u00a0Possible<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">Single-Fiber\u00a0Bi-Directional\u00a0\u00a0Transmission<\/td><td class=\"column-2\">Difficult<\/td><td class=\"column-3\">Difficult\u00a0to\u00a0Impossible<\/td><td class=\"column-4\">Intrinsic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-122 from cache -->\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>0 to<\/b><\/strong> <strong><b>2km Applications<\/b><\/strong><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" width=\"909\" height=\"374\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/0-to-2km-Applications.png\" alt=\"0 to 2km Applications\" class=\"wp-image-2981\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/0-to-2km-Applications.png 909w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/0-to-2km-Applications-300x123.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/0-to-2km-Applications-768x316.png 768w\" sizes=\"(max-width: 909px) 100vw, 909px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For 0 to 2 km DWDM transmission using the 100G Single Wavelength DWDM QSFP28&nbsp;&nbsp;PAM4 modules, DCM is not required.<\/li>\n\n\n\n<li>The module can support up to 8 dB link loss including the DWDM Mux, Demux, and fiber insertion losses.<\/li>\n\n\n\n<li>The typical insertion loss of a 40-channel Mux\/Demux pair is below 7 dB, and 2 km fiber insertion loss is &lt; 1 dB, so in most cases, EDFA is not required for direct links of 0 to 2 km transmission.<\/li>\n\n\n\n<li>If the link loss is &gt; 8 dB a pre-amp EDFA is required at the RX side.<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>2<\/b><\/strong><strong><b>&nbsp;<\/b><\/strong><strong><b>to<\/b><\/strong> <strong><b>40km Applications<\/b><\/strong><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"1143\" height=\"374\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/2-to-40km-Applications.png\" alt=\"2 to 40km Applications\" class=\"wp-image-2982\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/2-to-40km-Applications.png 1143w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/2-to-40km-Applications-300x98.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/2-to-40km-Applications-1024x335.png 1024w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/2-to-40km-Applications-768x251.png 768w\" sizes=\"(max-width: 1143px) 100vw, 1143px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For 2 to 40 km DWDM applications a tunable dispersion compensation module (TDCM) is required at the RX side after the pre-amp EDFA.<\/li>\n\n\n\n<li>We will provide a 19 &#8211; inch 1U accessory that supports automatic dispersion compensation tuning so that customers do not need to worry about the dispersion compensation settings.<\/li>\n\n\n\n<li>If the fiber insertion loss is small enough the booster EDFA on the TX side can be omitted to save system cost.<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>40<\/b><\/strong><strong><b>&nbsp;<\/b><\/strong><strong><b>to<\/b><\/strong><strong><b>&nbsp;<\/b><\/strong><strong><b>100km<\/b><\/strong><strong><b>&nbsp;<\/b><\/strong><strong><b>Applications<\/b><\/strong><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"1143\" height=\"388\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/40-to-100km-Applications.png\" alt=\"40 to 100km Applications\" class=\"wp-image-2983\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/40-to-100km-Applications.png 1143w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/40-to-100km-Applications-300x102.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/40-to-100km-Applications-1024x348.png 1024w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/40-to-100km-Applications-768x261.png 768w\" sizes=\"(max-width: 1143px) 100vw, 1143px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For extended-reach DWDM applications, transmission distance is OSNR limited.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.fibermall.com\/sale-459340-100g-dwdm-qsfp28-pam4-c22-80km.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">100G Single Wavelength DWDM QSFP28&nbsp;&nbsp;PAM4 module<\/span><\/a> supports up to 25 dB link loss between the booster and pre-amp EDFA\u2019s, and generally, it can support up to 100 km transmission over standard SMF fiber.<\/li>\n\n\n\n<li>For 40-100 km applications, a fixed DCM is required at the TX side and a TDCM is required at the RX side. We can provide both the fixed DCM and the TDCM in a 19-inch 1U accessory.<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>Single-Fiber<\/b><\/strong><strong><b>&nbsp;<\/b><\/strong><strong><b>BiDi Applications<\/b><\/strong><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1337\" height=\"376\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/Single-Fiber-BiDi-Applications-1.png\" alt=\"Single-Fiber BiDi Applications\" class=\"wp-image-2985\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/Single-Fiber-BiDi-Applications-1.png 1337w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/Single-Fiber-BiDi-Applications-1-300x84.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/Single-Fiber-BiDi-Applications-1-1024x288.png 1024w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2022\/10\/Single-Fiber-BiDi-Applications-1-768x216.png 768w\" sizes=\"(max-width: 1337px) 100vw, 1337px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Single-fiber bi-directional links of 1.6Tbps&nbsp;are supported by Our 100G Single Wavelength DWDM QSFP28&nbsp;&nbsp;PAM4<\/li>\n\n\n\n<li>Competing 100G DWDM modules have difficulty supporting bi-directional single-fiber transmission<\/li>\n\n\n\n<li>Separate booster EDFA, pre-amplifier EDFA, and tunable dispersion compensation module (TDCM) are used in \u201cred\u201d and \u201cblue\u201d directions in conjunction with red\/blue (R\/B) filters<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>TDCM+EDFA<\/b><\/strong><strong><b>&nbsp;<\/b><\/strong><strong><b>Accessory<\/b><\/strong><\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.fibermall.com\/store-21977-tdcm-dwdm-c-band.htm\" target=\"_blank\" rel=\"noopener\">Tunable Dispersion Compensation Module<\/a><\/span>(TDCM) line card<\/li>\n\n\n\n<li>Slope-matching dispersion compensation for G652 single-mode fibers (SMF)<\/li>\n\n\n\n<li>Automatic dispersion tuning with our proprietary control algorithm optimizes the dispersion compensation setting \u2013 customers do not need to worry about it<\/li>\n\n\n\n<li>Fixed <a href=\"https:\/\/www.fibermall.com\/store-21954-dcm-optical.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">DCM<\/span><\/a> for 40-100 km applications can be added to the TDCM line card as an option<\/li>\n\n\n\n<li><a href=\"https:\/\/www.fibermall.com\/store-21953-edfa-optical-amplifier.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">EDFA<\/span><\/a> line card provides both Booster EDFA and Pre-amp EDFA<\/li>\n\n\n\n<li>Provide Ethernet interface and USB serial interface for TDCM and EDFA control and monitoring.<\/li>\n\n\n\n<li>Redundant pluggable AC (100 V to 230 V) or DC (-48 V) power supplies<\/li>\n\n\n\n<li>Pluggable cooling fans<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-size: 14pt;\"><strong><b>Live<\/b><\/strong> <strong><b>Demonstrations<\/b><\/strong><\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Demo 1: Single-span 120 km multi-channel <a href=\"https:\/\/www.fibermall.com\/blog\/100g-dwdm-qsfp28-transceiver-in-2022.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">100G DWDM<\/span><\/a> transmission over standard SMF with total fiber link insertion loss of 25 dB. Standard erbium-doped fiber amplifiers and dispersion compensation modules are used in this demonstration.<\/li>\n\n\n\n<li>Demo 2: Direct link over 2 km standard SMF for multi-channel 100G DWDM transmission with average link insertion loss per channel of approximately 7.5 dB (including the 6 dB average insertion loss per channel of the 40-channel DWDM Mux\/Demux pair).<\/li>\n<\/ul>\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 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.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\/blog\/mpo-cable-types.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">The Ultimate Guide to MPO Cable Types: Understanding Fiber Optic Connectors<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/video\/the-use-of-glc-sx-mm.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">5 things you need to know about GLC-SX-MM<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/ndr-switch.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Navigating the World of NDR Switches: Everything You Need to Know<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/3-major-benefits-of-fiber-optic-cable.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">3 Major Benefits of Fiber Optic Cables<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/osfp-msa.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Understanding OSFP MSA: The Future of Optical Transceivers<\/span><\/a><\/li>                <\/ul>\r\n                        <\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Product Description Features&nbsp; Advantages Competitive Matrix 0 to 2km Applications 2&nbsp;to 40km Applications 40&nbsp;to&nbsp;100km&nbsp;Applications Single-Fiber&nbsp;BiDi Applications TDCM+EDFA&nbsp;Accessory Live Demonstrations Related Posts The Ultimate Guide to MPO Cable Types: Understanding Fiber Optic Connectors5 things you need to know about GLC-SX-MMNavigating the World of NDR Switches: Everything You Need to Know3 Major Benefits of Fiber Optic CablesUnderstanding [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":2983,"comment_status":"open","ping_status":"closed","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 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