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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. This band is particularly useful for short-reach optical communication due to its low chromatic dispersion in standard single-mode fiber. The following table lists 16 channels based on the LAN-WDM grid with 200 GHz spacing, commonly used in high-speed data center interconnects and optical transceivers.

Lane Frequency (THz) Wavelength (nm)
L-4228.41312.58
L-3228.61311.43
L-2228.81310.28
L-1229.01309.14
L0229.21308.00
L1229.41306.85
L2229.61305.72
L3229.81304.58
L4230.01303.45
L5230.21302.31
L6230.41301.18
L7230.61300.05
L8230.81298.93
L9231.01297.80
L10231.21296.68
L11231.41295.56

*The above table lists 16 channels based on the LAN-WDM grid with 200 GHz spacing (based on CW-WDM-MSA lane assigments technical specifications)

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Published 6/18/2025