Y分支光学调制器半波电压与波长和温度相关性研究  

Correlation of Wavelength and Temperature with the Half-Wave Voltage for Y Branch Optical Modulator

作　　者：杨福铃[1] 杨远洪[1] 韩宗虎[2] 曹耀辉[2] 

机构地区：[1]北京航空航天大学惯性技术国防科技重点实验室,北京100191 [2]中国航空工业集团公司西安飞行自动控制研究所,陕西西安710065

出　　处：《中国激光》2016年第6期168-174,共7页Chinese Journal of Lasers

基　　金：国家重大科学仪器设备开发专项(2013YQ040815);航空科学基金(20140851012);创新团队发展计划(IRT1203)

摘　　要：建立了Y分支光学调制器半波电压与工作波长和温度的数学模型,其半波电压随工作波长增加而增加、随温度增加而减小。设计实现了一种基于4阶波调制Sagnac干涉仪的半波电压自动测试系统,实现了半波电压的在线连续测量,相对测量精度达到8.5×10^(-6)。用可调激光器光源,改变工作波长和环境温度,分别进行了1310nm和1550nm波段Y分支光学调制器半波电压的实际测量,通过实验测试确定了半波电压与波长和温度的相关性。结果表明,半波电压在这两个测试波段内与波长和温度均呈线性关系,波长相关系数为正,分别约为3.61×10^(-3 )V/nm和9.54×10^(-3 )V/nm;温度相关系数为负,分别约为-1.76×10^(-3 )V/℃和-2.00×10^(-3 )V/℃。实验结果验证了理论模型的正确性。Models of the Y branch optical modulator＇s half-wave voltage with wavelength and temperature are established. The half-wave voltage increases with wavelength increasing and temperature decreasing. A half-wave voltage automatic test system based on Sagnac interferometer modulated with four steps waveform is designed and it can measure half-wave voltage continuously on line. Relative measuring accuracy reaches 8. 5 ×10-6. By changing working wavelength and temperature, the actual measurement of Y branch＇s half-wave voltages in 1310 nm and 1550 nm band is realized by using a tunable laser as the light source. The results show that the half-wave voltage is linear with the temperature and the wavelength in the two test bands. The wavelength correlation coefficients are 3.61 × 10-3 V/nm and 9.54 × 10-3 V/nm, respectively, and the temperature correlation coefficients are - 1.76 ×10 -3 V/℃ and 2.00 × 10-3 V/℃, respectively. The experimental results verify the correctness of theoretical model.

关 键 词：光纤光学 光纤陀螺 Y分支光学调制器 半波电压 波长 温度 

分 类 号：TN256[电子电信—物理电子学]