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低成本脉冲光源应用于光码分多址系统,有助于光码分多址系统的实用化进程。对实用化的啁啾脉冲光源应用于光码分多址系统进行了优化改进。研究啁啾脉冲光源本身啁啾的消除即压缩啁啾脉冲对编解码性能的提升作用。针对通常实用的啁啾脉冲光源的谱宽相对较窄而不能充分覆盖编解码频谱的现实,研究利用编解码器频谱的半边带进行编解码以改善解码性能的效果。仿真和实测数据表明,对啁啾脉冲进行消啁啾、压缩脉宽有助于提高编解码性能;利用编解码频谱的半边带进行编解码能够更加充分利用光源频谱,编解码性能进一步得到优化。研究结果表明消啁啾和半边带能够改进啁啾脉冲光源用于光码分多址系统的有效性。
Low-cost pulsed light source used in optical code division multiple access system, contribute to the practical application of optical code division multiple access system. The practical application of chirped pulse light source in optical code division multiple access system has been optimized and improved. Research chirp pulse light source itself chirp elimination that compressed chirped pulse on the performance of codecs to enhance the role. Aiming at the fact that the spectral width of the commonly used chirped pulse light source is relatively narrow and can not fully cover the codec spectrum, the effect of using the half-band of the codec spectrum to improve the decoding performance is studied. The simulation and measured data show that chirp cancellation and chipping of the chirped pulse can help improve the codec performance. Using the half-band of codec spectrum to make full use of the spectrum of the light source, the codec performance is further optimized. The results show that eliminating chirp and half-band can improve the efficiency of chirped pulse light source for optical code division multiple access system.