Optical fiber connections of the TN12OAU board

One multiplexed optical signal received at the IN port is sent to the EDFA optical module. The EDFA optical module amplifies the optical power of the signal and locks the gain of the signal. The signal is then transmitted to the DCM board through the TDC port for dispersion compensation. Then, the signal is sent back through the RDC port. The amplified multiplexed signals are output through the OUT port.
The multiplexed signal can also be input through the VI port and output through the VO port after the optical power is adjusted. Then, the IN port receives the multiplexed signal sent from the VO port.

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