Channel spacing of 200G line rates

For 10G, 40G, and 100G line rates, the channel spacing is 50 GHz for an 80-wavelength system and is 100 GHz for a 40-wavelength system. For 200G signals, the flexible grid technology can be used. When the technology is used, the channel spacing is not fixed and can be set. For example, the channel spacing of 200G signals can be set to 37.5 GHz.

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