激光器线宽对空间相干光通信链路传输误码率研究  

Bit Error Rate of Laser Linewidth in Spatial Coherent Optical Communication Link

作　　者：孔英秀[1,2] 柯熙政[1] 杨媛[1] Kong Yingxiu;Ke Xizheng;Yang Yuan(School of Automation and Information Engineering, Xit an University of Technology Xi＇an, Shaanxi 710048, China;School of Photoelectronic Engineering, Xir an Technological University, Xi＇ an, Shaanxi 710021, China)

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048 [2]西安工业大学光电工程学院,陕西西安710021

出　　处：《激光与光电子学进展》2018年第4期68-73,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61377080)

摘　　要：针对激光器线宽对空间相干光通信系统性能的影响,提出了激光器线宽影响空间相干光通信链路传输误码率的计算方法。研究了湍流大气中激光器线宽对链路传输误码率的影响,建立了大气湍流中空间相干光通信链路传输误码率模型。分析了不同参数影响下激光器线宽对误码率的影响,通过计算发现,线宽增大1倍,误码率增加2.7倍左右;线宽增大一个数量级,相应的误码率也增大近一个数量级。We propose a calculation method of the bit error rate of space coherent optical communication link, to solve the influence of laser linewidth on the performance of space coherent optical communication system. The influence of the laser linewidth on the transmission error rate of the link in the turbulent atmosphere is studied, and the error rate model of the spatial coherent optical communication link in the atmospheric turbulence is established. The influence of different parameters on the bit error rate is analyzed, and the result of numerical settlement is given. It is found that, the linewidth increases by 1 times and the bit error rate increases by about 2.7 times; the linewidth increases by an order of magnitude and the corresponding bit error rate increases by nearly one order of magnitude.

关 键 词：光通信 激光器线宽 大气湍流 外差探测 误码率 

分 类 号：TN929.12[电子电信—通信与信息系统]