论文部分内容阅读
光源与编解码器的匹配关系是光码分多址(OCDMA)系统设计的重要内容。提出了时域相位编解码器的半边带应用问题,即:等效相移超结构光纤光栅(EPS-SSFBG)编解码器反射谱的半边带已包含了编解码器结构的所有信息,光源只需要覆盖半边带就能完成编解码功能。仿真分析了光源脉宽与编解码器反射谱的对应关系对编解码性能的影响,仿真结果验证了半边带应用的可行性。在应用等效相移光栅编解码器的实验中验证了半边带应用的编解码性能,实验结果与半边带应用的理论规律相符。
The match between the light source and the codec is an important part of the design of optical code division multiple access (OCDMA) system. The application problem of the half-band of the time-domain phase codec is proposed. That is, the half-band of the reflection spectrum of the equivalent phase shift super-structure fiber grating (EPS-SSFBG) codec contains all the information of the codec structure. Need to cover half of the band will be able to complete the codec function. The influence of the corresponding relationship between the pulse width of the light source and the reflection spectrum of the codec on the coding and decoding performance is simulated and analyzed. The simulation results verify the feasibility of the application of the half-band. The performance of codec in the half-band is verified in the experiment using the equivalent phase shift grating codec. The experimental results are in accordance with the theoretical rules of the application in the half-band.