Acronym · Photonics, MEMS & Sensors
CWDM (Coarse Wavelength Division Multiplexing)
Wavelength multiplexing on a wide 20 nm channel grid, loose enough that uncooled lasers can stay within their channel over temperature. It trades channel count for much cheaper optics than dense multiplexing.
- Also known as
- Coarse WDM, LAN-WDM
- Type
- Acronym
- Domain
- Photonics, MEMS & Sensors, Optical components
Notes
The four-lane CWDM grid around 1310 nm underpins mainstream 100G and 400G datacentre single-mode optics.
Related terms
- DWDM
- Optical transceiver
- DFB laser
- Multimode fibre
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