Optical WDM Grid Sample Clauses

Optical WDM Grid. CFP MSA modules may operate within specific WDM (wavelength division multiplexed) grids. It is recommended that CFP MSA modules adhere to the ITU-T WDM grid conventions. The ITU-T document G.694.1 specifies the DWDM frequency grid anchored to 193.1 THz. It supports a variety of channel spacing of 12.5, 25, 50, and 100 GHz and wider. The ITU-T document G.694.2 specifies the CWDM wavelength grid, which supports a channel spacing of 20 nm. Unlike DWDM, whose grid is specified in terms of an anchor frequency, the CWDM grid is defined in terms of wavelength separation. This grid is made up of 18 wavelengths defined within the range 1270 nm to 1610 nm.
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