Wavelength spacing for 200G signals

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For 10 Gbit/s, 40 Gbit/s, and 100 Gbit/s signals, the wavelength spacing is 50 GHz for an 80-wavelength system and 100 GHz for a 40-wavelength system.
For 200 Gbit/s signals, the flexible grid technology can be used. When the technology is used, wavelength bandwidth is flexible, instead of being fixed at 50 GHz or 100 GHz. For example, if different modulation methods are used for 200 Gbit/s signals, different required bandwidth is required. (For example, it can be 75 GHz or 150 GHz). Flexible ROADM adjusts bandwidth based on signals and grooms the signals to specified directions according to the network configurations.

Other related questions:
Channel spacing of 200G signals
For 10G, 40G, and 100G signals, the channel spacing is 50 GHz for an 80-wavelength system and 100 GHz for a 40-wavelength system. For 200G signals, the flexible grid technology can be used. When the technology is used, wavelength bandwidth is variable. For example, if different modulation methods are used for 200G signals, the required bandwidth is different. For example, it can be 75 GHz or 150 GHz.Flexible ROADM adjusts bandwidth based on signals and grooms the signals to specified directions according to the network configurations.

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.

Precautions for commissioning multiplexed signals
During optical power commissioning of a WDM network, you need to first commission the single-wavelength optical power and then the multiplexed-wavelength optical power. This rule ensures that the attenuation of multiplexed signals is the minimum. If you commission the multiplexed-wavelength optical power first, the attenuation of multiplexed signals may be excessively large and as a result the single-wavelength optical power may fail to be commissioned, causing a commissioning failure.

Method used to query the flow and direction of a wavelength signal on an NE
You can query the logical fiber connections between optical NEs in the main view of the U2000. On the main topology of the U2000, double-click the desired optical NE to display the status diagrams of the NE. Select the signal flow diagram. Then you can query the logical fiber connections between boards of the optical NE.

Whether there are wavelength conversion boards that support GE signals on the OSN 8800
Yes, the OSN 8800 provides wavelength conversion boards that support GE signals, such as LOG boards.

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