<\/span><\/h4>\nFiberMall’s 400G SR8 optical modules comply with the standard IEEE 802.3cm protocol and meet the requirements of 70m OM3 and 100m OM4\/OM5 transmission links. The module uses a standard 16-core multi-mode MPO interface and consists of a transceiver optical component, VCSEL driver, trans-impedance amplifier (TIA), PAM4 service chip (oDSP), controller, and six other components. Each 8-channel optical and electrical component at the transceiver side is placed in a QSFP-DD package through a compact engineering design.<\/p>\n
![\"Block](\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2023\/04\/Block-diagram-of-400G-SR8-optical-module.png\")
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Block diagram of 400G SR8 optical module<\/b><\/strong><\/span><\/p>\nThe 400GE-SR8 optical module has 8 channels, each carrying 53.125Gbps signals with PAM4 high-order modulation, and the oDSP inside the module performs clock recovery and signal shaping and conditioning functions.<\/p>\n
<\/span>400G DR4, 400G DR4+ and 400G FR4 Optical Module<\/b><\/strong><\/span><\/span><\/h4>\nFiberMall’s 400GE-DR4, DR4+, and FR4 optical modules meet the standard IEEE 802.3bs & 802.3cu protocols with platform-based hardware design solutions to meet 500m and 2km transmission link requirements respectively. 400G DR4, DR4+, and 400G FR4 optical modules are shown in the block diagram below. The 400GE-DR4\/DR4+ module uses a standard 12-core MPO connector, and the 400G FR4 module uses a standard dual LC connector. The module mainly consists of optical components for transceiver and transmitter, EML driver, trans-impedance amplifier (TIA), PAM4 service chip (oDSP), controller, and other six parts. The module design uses a full range of independently developed underlying components, covering an end-to-end vertically integrated solution from the optical chip (EML, PD) to the electrical chip (Driver, TIA, oDSP).<\/p>\n
![\"400G](\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2023\/04\/400G-DR4-and-DR4-Optical-Module-Block-Diagram.png\")
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400G DR4 and 400G DR4+ Optical Module Block Diagram<\/b><\/strong><\/span><\/p>\nThe 400G DR4, DR4+, and 400G FR4 optical transceivers have a total of 4 channels of optical signals, each carrying 106.25Gbps signals. The electrical signal has 8 channels, each channel carries 53.125Gbps signal. The optical and electrical signals are both modulated by PAM4 high-order modulation, and the rate conversion is realized by the module’s internal oDSP, which simultaneously performs clock recovery and signal amplification and conditioning functions. In addition, the 400GE-DR4\/DR4+ optical module is designed for parallel light output, and the 4-channel optical signal adopts the same wavelength design; the 400GE-FR4 optical module is designed for combined wavelength, and the 4-channel optical signal adopts different wavelengths and is output by the optical port after the optical wavelength division multiplexer synthesizes 1-channel optical signal. Compared with 100GE-CWDM4 and 100GE-PSM4, 400GE-DR4\/DR4+ and FR4 can achieve higher system transmission rates by increasing the transmission rate of optical and electrical single-channel signals and the number of electrical channels at the same time.<\/p>\n
![\"400G](\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2023\/04\/400G-FR4-Optical-Module-Block-Diagram.png\")
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400G FR4 Optical Module Block Diagram<\/b><\/strong><\/span><\/p>\n<\/span>400G LR8 and 400G ER8 Optical Transceiver Modules<\/span><\/strong><\/span><\/h4>\nThe 400G LR8\/ER8\/ER8 Lite module consists of TOSA, ROSA, EML Driver, PAM4 service chip (oDSP), and controller. The system block diagram is shown below. The module connector receives eight parallel 53.125Gbps PAM4 electrical signals from the board. After the adaptive processing of the digital signal processing chip (oDSP) in the optical module, the driver amplified the 8-channel semiconductor laser (TOSA), the 8-channel semiconductor laser output stable laser signals, and then through the MUX combined wave output, to achieve 8-channel electric-optical conversion.<\/p>\n
![\"400G](\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2023\/04\/400G-LR8-and-400G-ER8-Optical-Module-Block-Diagram.png\")
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400G LR8 and 400G ER8 Optical Module Block Diagram<\/b><\/strong><\/span><\/p>\n<\/span>FiberMall 400G Optical Transceiver<\/b><\/strong><\/span><\/span><\/h2>\nFiberMall is a leading optical network solutions provider in China with industry-leading R&D, manufacturing, and technical service capabilities. Continue to provide users with innovative, efficient, and reliable optical network products, solutions, and services.<\/p>\n
\n\n\n| Product Model<\/td>\n | Description<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-SR8<\/span><\/a><\/td>\n | 400GBASE-SR8 QSFP-DD Optical Transceiver Modules 400G 850nm 100m DOM MPO\/MTP MMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-FR4<\/span><\/a><\/td>\n | 400GBASE-FR4 QSFP-DD Optical Transceiver Modules 400G 1310nm 2km DOM LC SMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-DR4<\/span><\/a><\/td>\n | 400GBASE-DR4 QSFP-DD Optical Transceiver Modules 400G 1310nm 500m DOM MTP\/MPO SMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-LR4<\/span><\/a><\/td>\n | 400GBASE-LR4 OSFP-DD Optical Transceiver Modules 400G 1310nm 10km DOM LC SMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-ER4<\/span><\/a><\/td>\n | 400GBASE-ER4 QSFP-DD Optical Transceiver Modules LC Duplex SMF 1310nm 40km<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-ER8<\/span><\/a><\/td>\n | 400GBASE-ER8 QSFP-DD Optical Transceiver Modules 400G 1310nm 40kmDOM LC SMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-XDR4<\/span><\/a><\/td>\n | 400GBASE-XDR4 QSFP-DD Optical Transceiver Modules PAM4 1310nm 2km DOM MTP\/MPO-12 SMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-LR8<\/span><\/a><\/td>\n | 400GBASE-LR8 QSFP-DD Optical Transceiver Modules PAM4 1310nm 10km DOM Duplex LC SMF<\/td>\n<\/tr>\n |
\n| QSFP-DD-400G-PLR4<\/a><\/span><\/td>\n | 4x100GBASE-LR OSFP-DD Optical Transceiver Modules 1310nm 10km DOM MTP\/MPO-12 SMF<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n In the era of high computing power, ultra-large data centers have increasing demands for bandwidth. 400G optical communication module has become the best choice to improve system performance and reduce bandwidth costs. FiberMall offers a full line of 400G optical module products ranging from 100m to 40km, providing a complete solution for data center 100G\/400G networks and data center interconnections for use in a wide variety of networking scenarios, including data center networks, metropolitan integrated hosting networks, and high-capacity and long-distance transmission networks.<\/p>\n |