Review of Robust Data Exchange Using Optical Nonlinearities

Figure 15

Demodulated waveforms (Ch. I and Ch. Q) for 100 Gbit/s DQPSK data exchange. (a1 and a2) S1 before exchange (P1: OFF, P2: OFF). (b1 and b2) S2 before exchange (P1: OFF, P2: OFF). (c1 and c2) S1 after wavelength conversion (WC: S2 to S1) (S1: OFF, S2: ON, P1: ON, P2: ON). (d1 and d2) S1 after exchange (Ex.: S2 to S1) (S1: ON, S2: ON, P1: ON, P2: ON). (e1 and e2) S2 after wavelength conversion (WC: S1 to S2) (S1: ON, S2: OFF, P1: ON, P2: ON). (f1 and f2) S2 after exchange (Ex.: S1 to S2) (S1: ON, S2: ON, P1: ON, P2: ON). (a1)–(f1) Ch. I. (a2)–(f2) Ch. Q.