100/40Gbps optical Ethernet standard "100G-SWDM4-MSA" and "40G-SWDM4-MSA" using SWDM

　So, from this week, I will introduce the IEEE non -standard optical Ethernet standard.The first "SWDM Alliance" was formed in September 2015.The founding members are COMMSCOPE, CORNING, DELL, Finisar, H3C, Huawei, Juniper Networks, LUMENTUM, and OFS.

　By the way, the company's name of Finisar, which was acquired on September 20, 2019, is now the II-VI Incorporate, the buyer (although Dell is now Dell EMC).Later, Hisense, Huber+Suhner, InneOS, Panduit, PrySmian Group, SUPERIOR ESSEX, Suruga Seiki, and YOFC (Chang Funny Fiber) are now composed of 18 member companies.

　As the name suggests, the purpose of SWDM Alliance is the establishment of an optical Ethernet standard using "SWDM (SHORTWAVE WAVELENGTH DIVISTH DIVISTH DIVISTH MultIPLEXING)".SWDM is basically a type of WDM, or by overlapping the light of different wavelengths, it is a mechanism that allows a large bandwidth to be easily obtained by passing multiple wavelengths to one optical fiber.

　However, the WDM has been mainly developed mainly for long -distance communication, and the main use of the light source of 1000 nm or more for SMF.

　It's a bit old, but while the "100BASE-BX10" introduced in this article uses 1310nm and 1550 nm light sources, SWDM is less than 1000nm, specifically using a wavelength 846 to 953 nm light source using WDM.It is a mechanism to configure it.By the way, it is expected to reach 2 to 440m for 40Gbps and 2 to 150m for 100Gbps.

　The advantage of using this is that MFM can be used.Using SMF as a wiring in the data center or in the rack is technically possible, but the price is strict.Therefore, in order to respond to the voice of the Ethernet standard of 40 to 100 Gbps, which can use inexpensive MMF, the SWDM Alliance was formed to formulate MMF -compatible standards using SWDM.