New Structure for Multi-Channel Demultiplexing  

作　　者：Li Bing, Shi Zan and Ye Peida (Optical Communication Laboratory, Beijing University of Posts and Telecommunications, Beijing 100088, P. R.China) 

出　　处：《The Journal of China Universities of Posts and Telecommunications》1997年第1期21-28,共8页中国邮电高校学报（英文版）

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.

关 键 词：optical time division multiplexing DEMULTIPLEXER Fabry  Perot semiconductor laser amplifier 

分 类 号：TN929.11[电子电信—通信与信息系统]