11/11/2022
Advantages of
1. Cost-Effective: It uses two fibers (duplex) instead of eight (SR4), enabling significant fiber infrastructure capex savings.
2. Supported: It supports links up to 150m over OM5 MMF with only two fibers.
3. Easy Migration to 100G: It enables seamless migrations from both 10G and 40G to 100G without major changes to the fiber infrastructure. It works on legacy OM3 or OM4 duplex MMF as well. The widely deployed 10G-SR, 40G-BiDi and 40G-Universal optics all operate over a single pair of MMF with regular LC termination. So do the 100G-SWDM4 transceivers. Therefore, users don’t need to change the existing cabling or to re-terminate.
4. Familiar Tap Modules: It can be tapped using existing 1 x 2 Tap modules just like 10G-SR and 40G-Universal optics with no change or replacements, avoiding additional cost and complexity.
To upgrade data centers to 40G/100G Ethernet without changing the existing duplex MMF infrastructure being used for 10G Ethernet, pluggable optical transceivers with SWDM technology matters a lot.
SWDM is short for short wavelength division multiplex. The four-wavelength implementation of SWDM is called SWDM4, and these four wavelengths ( , , and ) are multiplexed/demultiplexed inside a transceiver module into a pair of MMFs (one fiber in each direction, i.e., a standard duplex interface). A 100G SWDM4 can be used for links up to 75m of OM3 fiber or up to 100m of OM4 fiber, and up to 150m of OM5 with better experience and a higher price.
