Figure 4

Experimental setup. DFB: distributed feedback fiber laser; MOD: optical modulator, AWG: arbitrary waveform generator; OBPF: optical bandpass filter; EDFA: Erbium-doped fiber amplifier, AOM: acousto-optical modulator; PC: polarization controller; SSMF: standard single mode fiber; PD: photodetector; RX: balanced receiver; OSC: real-time sampling oscilloscope.