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脉冲光源是光码分多址的关键技术之一,光源的性能直接决定了系统的性能。深入研究了光脉冲的啁啾对时域相位光码分多址编解码器性能的影响,分析了啁啾脉冲光源用于光码分多址系统的可行性。基于增益开关分布反馈式脉冲激光器和等效相移光纤光栅编解码器进行了2.5 Gb/s数据速率的60 km光码分多址系统传输实验,得到了误码率低于10~(-9)的实验结果。理论和实验研究结果表明,啁啾脉冲光源可用于光码分多址系统,这对于降低系统的成本,增强光码分多址技术的可实现性有重要意义。
Pulsed light source is one of the key technologies of optical code division multiple access. The performance of light source directly determines the performance of the system. The effect of optical chirp on the performance of time-domain optical code division multiple access codec is deeply studied. The feasibility of using chirped pulse light source for optical code division multiple access system is analyzed. Transmission experiments of 60-kilometer optical code division multiple access with 2.5 Gb / s data rate based on the gain switch distributed feedback pulsed laser and equivalent phase-shift fiber grating codec were carried out. The error rate of the system was lower than 10 -9 ) Of the experimental results. Theoretical and experimental results show that the chirped pulsed light source can be used in optical code division multiple access system, which is of great significance to reduce system cost and enhance the operability of optical code division multiple access.