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CWDM 20nm Spacing Table

Coarse Wavelength Division Multiplexing (CWDM) is a technology used in fiber-optic networks to increase bandwidth by transmitting multiple signals on different wavelengths over a single fiber. CWDM typically uses 20 nm channel spacing and operates in the wavelength range of 1270 nm to 1610 nm. It is widely used in metro and access networks due to its cost-effectiveness and simplicity compared to Dense WDM (DWDM).

Standard CWDM Channels

Channel Wavelength (nm) Frequency (THz)
271270236.06
291290232.40
311310228.85
331330225.41
351350222.07
371370218.83
391390215.68
411410212.62
431430209.65
451450206.75
471470203.94
491490201.20
511510198.54
531530195.94
551550193.41
571570190.95
591590188.55
611610186.21

Learn More!

DWDM C-Band 100GHz Spacing Table

Dense Wavelength Division Multiplexing (DWDM) in the C-band with 100GHz spacing is a widely adopted technology in optical communication...

DWDM O-Band 200GHz Spacing Table

Dense Wavelength Division Multiplexing (DWDM) in the O-band (Original band) operates in the 1260–1360 nm wavelength range...

Published 6/18/2025