400G Network


1. What is a QSFP-DD Optical Modules? A QSFP-DD Optical Transceiver with double density features, it refers doubling the number of high speed transmitter and receiver for the optical signal transmitting. The QSFP-DD transceivers is ready for the new PAM4 function for supporting 50Gbps per channel, which could support bandwidth over 400Gbps via MPO/MTP fiber […]

400G Network, Data Center

Optical Interface for QSFP-DD Bidi Transceivers

Currently, 400G QSFP-DD transceivers use 8 pairs of MMF to transmit signal in short distance, while bidirectional (BiDi) technology enables users to save the fibers for new data center deployment or maximize their usage of the existing fiber cabling infrastructure. the following article briefly explains the latest connector for QSFP-DD BIDI transceivers. 1. MPO Optical […]

400G Network

What is Mini Duplex Connector (MDC)

MDC Mini Duplex Connector is the latest connector US Conec showcase in OFC2019, it is the latest form factor and a joint effort between US Conec and Corning. It is similar to SN Connector developed by SENKO. The MDC is a dual-fiber connector manufactured with current 1.25mm ceramic ferrule technology used in the popular industry […]

400G Network, WHAT-IS

Do you know these terminologies for 400G Transceivers

OSFP Octal Small Form Factor Pluggable QSFP-DD Quad Small Form Factor Pluggable –  Double Density CFP8 C Form-factor Pluggable 8-times density QSFP56-DD Quad Small Form Factor Pluggable 56 –  Double Density COBO Consortium for On-Board Optics FEC Forward Error Correction PAM4 Pulse Amplitude Modulation 4-Level DCO Digital Coherent Optics I2C Inter-Integrated Circuit (QSFP+/QSFP28 management interface) […]

400G Network

Introduction to 400GBASE-SR4.2 (BiDi) Standard

The 400GBASE-SR4.2 (BiDi) Standard was announced by the 400G Bidirectional (BiDi) MSA (Multisource Agreement) Group in the year 2018. The specification will be named 400G-BD4.2, to identify the bidirectional use of four lasers each of two colors. Using the 400G-BD4.2 specification, two transceivers communicate over lengths up to 70 meters (OM3 MMF Multimode fiber), 100m […]

400G Network

What do the suffixes “SR8, DR4, xDR4 FR4 and 2FR4” stand for OSFP Modules?

The letters are reach specifications, and the number refers to the number of optical channels: Description Connector Type SR8: “SR” refers to 100m reach using multi-mode fiber, and “8” implies there are 8 optical channels. Each of the 8 optical channels from an SR8 module are carried on separate fibers, resulting in a total of […]

400G Network

400G OSFP Transceivers and Its Fiber Type and Connector Type

The OSFP stands for an “Octal Small Form-factor Pluggable”. It is described as an “Octal” module because the electrical interface of an OSFP connector consists of 8 electrical lanes, running at 50Gb/s each, for a total of bandwidth of 400Gb/s. OSFP SR8, 8x50G Optical transceiver module is designed for use in 400 Gigabit links over […]

400G Network