The optical signals are strong enough to have power margin of several dB (Maximum one can be up to 12 dB for the 1535nm) for BER of 10-9 after they are transmitted through 102km.

• 10个频道传输102km后，在误码率为1×10－9条件下，实测尚有数dB（最大为12dB）的功率裕量。