光采样示波器样机测试性能评估的实验研究  

Experimental Research on Measurement Performance Evalution of a Proto-Type Optical Sampling Oscilloscope

作　　者：张海奇[1] 左林[1] 刘超超[1] 杨爱英[1] 

机构地区：[1]北京理工大学光电学院,北京100081

出　　处：《激光与光电子学进展》2015年第6期93-97,共5页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61331010;61177067;61427813);国家863计划(2013AA013401)

摘　　要：基于周期极化铌酸锂波导的和频效应,研制了光采样示波器样机。通过实验研究了光采样示波器样机在不同条件(光信号功率、数据速率、色散、波长)下的测试性能,并与宽带电示波器的测试结果进行了对比,从多个方面对光采样示波器的测试性能进行了评估。与安捷伦86100A示波器的对比测试结果表明,该光采样示波器样机具有更高的灵敏度,对弱信号测量具有更强的稳健性。对不同速率光信号测量的结果表明,光采样示波器样机能对不同速率信号自适应测量,真正实现数据速率透明化。在不同色散条件下的测量结果表明,光采样示波器样机能对光纤传输信号自适应测量。为了使光采样示波器样机对不同波长信道的光信号具有一致的测量性能,必须优化锁模脉冲激光器的光谱,使其光谱平坦。这些结果为光采样示波器的进一步优化设计和参数标定提供了很好的依据。Experimental results of a proto-type optical sampling oscilloscope based on sum frequency generation in periodically poled lithium niobate are demonstrated. The measurement performances under different conditions, like optical signal power, data rate, chromatic dispersion and wavelength, are estimated. Compared with the measured results by an Agilent 86100A oscilloscope, the optical sampling oscilloscope has higher sensitivity and is robust to weak signal. The measured results of optical signals with different data rates show that the proto-type optical sampling oscilloscope is adaptive and transparent to different data rates. Measured results under different chromatic dispersion values show that the optical sampling oscilloscope can measure optical signals from the fiber link. Measured results of optical signals with different wavelengths indicate that, in order to make the optical sampling oscilloscope have the identical performance for measuring the wavelength division multiplexing （WDM） signal, the spectrum of mode-locked laser should be as flattened as possible. The measured results by the proto-type optical sampling oscilloscope make sense for the future design and specification.

关 键 词：光通信 非线性光学 光纤光学 

分 类 号：TN929.11[电子电信—通信与信息系统]