Adjacent channel isolation for the M40 board

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For the M40 board, the adjacent channel isolation should be greater than 22 dB.

Other related questions:
Adjacent channel isolation for the D40 board
For the D40 board, the adjacent channel isolation should be greater than 25 dB.

FIU board isolation
Isolation refers to the ratio of the optical power leaked by local-frequency or RF signals to the input optical power, in the unit of dB. Isolation of a frequency mixer refers to the mutual isolation between frequency ports, including the isolation among local frequency, IF, and RF.

Whether the spacing specifications for adjacent channels refer to the specifications on fibers or in vacuum
The spacing specifications for adjacent channels refer to the specifications on fibers.

What is a fractional channelized board
Currently, the fractional channelized board refers to the 1E1T1-F/2E1T1-F/4E1T1-F/8E1T1-F board. The 1E1T1-F/2E1T1-F/4E1T1-F/8E1T1-F board line contains 32 timeslots that are numbered from 0 to 31. In fractional channelized mode, timeslot 0 is used to transmit synchronous information, and other timeslots can be bundled into a channel set.

Logical slots occupied by the M40 and D40 boards of the OptiX OSN 8800
For logical boards 11M40V and 11D40, each board occupies three slots; for logical boards 12/13M40V and 12D40, each board occupies two slots.

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