How single fiber CWDM Solution work?

The light emitted by the 1270nm optical module is received by the 1470nm optical module, and the light emitted by the 1470nm optical module is received by the 1270nm optical module.

This design allows the 1270nm optical module to communicate with the 1470nm optical module.

In turn, 1290nm optical module and 1490nm optical module, 1310nm optical module and 1510nm optical module, 1330nm optical module, and 1530nm optical module, 1350nm optical module and 1550nm optical module, etc., are used in pairs.