摘要
A new all optical demultiplexer based on nonlinear effect in semiconductor laser amplifier (SLA) is proposed. It can demultiplex all channels of the OTDM signal concurrently, and it can also be integrated on a single chip. The proposed device consists of a series short Fabry Perot amplifiers (FPSLA) setting on the path vertically, through which the preamplified optical signal travels. Perpendicularly to the signal, K(channel number) paralleled beams of light pulse, which act as probes with repetition at the bit rate of one channel, irradiate on these FP SLAs , respectively, just when the corresponding signal channel pulse passes through the active region from lateral side. The transmissivity depends on the signal pulse. Theoretical analysis has been given. As a demonstrating example, a device operated at the speed of 25Gbit/s (2.5Gbit/s×10 ) is simulated and the results show that the about 9.24 dB extinction ratio can be achieved easily.
A new all optical demultiplexer based on nonlinear effect in semiconductor laser amplifier (SLA) is proposed. It can demultiplex all channels of the OTDM signal concurrently, and it can also be integrated on a single chip. The proposed device consists of a series short Fabry Perot amplifiers (FPSLA) setting on the path vertically, through which the preamplified optical signal travels. Perpendicularly to the signal, K(channel number) paralleled beams of light pulse, which act as probes with repetition at the bit rate of one channel, irradiate on these FP SLAs , respectively, just when the corresponding signal channel pulse passes through the active region from lateral side. The transmissivity depends on the signal pulse. Theoretical analysis has been given. As a demonstrating example, a device operated at the speed of 25Gbit/s (2.5Gbit/s×10 ) is simulated and the results show that the about 9.24 dB extinction ratio can be achieved easily.
