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In this paper, we show the influence of intrachannel crosstalk in an optical switch network. The intrachannel crosstalk is mainly due to a signal that is not sufficiently blocked by the optical switch. The signal has a broadband spectrum and causes coherent crosstalk at the optical switching node. We investigate analytically the relationship between the channel isolation of the optical switching node...
We compare 44.6-Gbit/s NRZ-DQPSK format with EDC against RZ-DQPSK format for 50-GHz-spacing ROADM system. NRZ-DQPSK with EDC is superior to RZ-DQPSK when ROADM node number exceeds 10.
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