Different from the 40G Ethernet, 50G Ethernet initial limited deployment as proprietary 2x25G or 1x50G. It could provide faster bandwidth to extend the existing data center network. One of the form-factor of the 50GE pluggable modules is SFP56. it is the same size as current SFP, SFP and SFP28 Modules. The 50GE SFP56 PAM4 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 […]
The global market for optical transceivers eked out respectable year-over-year growth (+8%) in Q3 2018 despite headwinds faced by several vendors. Strong year-over-year sales growth was reported by II-VI (+20%), Accelink (+18%), Innolight (+18%), Lumentum (+49%), Neophotonics (+15), and Sumitomo (+12%), while quality issues at AOI (down 36% y-o-y), and incomplete recoveries from ZTE’s 2Q18 […]
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 […]
The QSFP-DD stands for a “Quad Small Form-factor Pluggable (QSFP) – Double Density (DD)”. The QSFP-DD connector also has 8 electrical lanes. The QSFP-DD form factor is similar to the QSFP form factor, except a second row of electrical contacts has been added to the QSFP connector in order to increase the number of high […]
There are two major standards groups for PON technology, they are the Institute of Electrical and Electronics Engineers (IEEE) and the Telecommunication Standardization Sector of the International Telecommunication Union (ITU-T). The following article is about the introduction of different PON technology. GEPON (Gigabit Ethernet passive optical network) 1G / 10G symmetrical Update from Ethernet protocols […]
