抄録
An OTDM access system transmitting 4×10Gb/s signal is proposed. All-optical parallel-serial conversion technique using XAM (Cross-absorption modulation) in an EA modulator (EAM) is applied for MUX/DEMUX of the signals. Transmission experiment is carried out using 11-km SMF installed outside. In the experiment, 10-Gb/s NRZ signal is converted to RZ signal using an EAM and a 40-Gb/s signal is made applying OTDM technique. From the observation of the 40-Gb/s signal waveform, fine 4×10Gb/s-to-40Gb/s parallel/serial conversion is confirmed. Simultaneously, the 40-Gb/s signal and 10-GHz optical pulses after transmitted 11-km SMF are injected to an EAM and 40Gb/s-to-4×10-Gb/s signal conversion is also confirmed.
