耦合器传输光谱对光纤陀螺信噪比的影响

李彦; 姜漫; 孙彦凤

耦合器传输光谱对光纤陀螺信噪比的影响

北京航空航天大学仪器科学与光电工程学院, 北京 100191

详细信息

中图分类号: O434.19
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出版历程
- 收稿日期: 2013-01-05
- 网络出版日期: 2013-12-30

Influence of the transmitting spectra of fiber coupler on the SNR of FOGs

School of Instrumentation Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 温变条件下，对光纤光源发出光波经单模光纤耦合器传输后的输出光谱进行了测试；借助测试结果，仿真计算了耦合器的透射光波和耦合光波分别进入光纤陀螺后干涉仪输出信号的信噪比随温度的变化情况.结果表明：当环境温度发生变化时，耦合器透射光波和耦合光波的功率、波长和谱宽都会发生变化，且透射光波的功率、波长和谱宽的温度稳定性远高于耦合光波的稳定性；当耦合光波作为干涉仪输入光波时，由温变引起的光纤陀螺信噪比误差约是透射光波作为输入光波时的信噪比误差的4倍.
- 光纤耦合器 /
- 光谱 /
- 光纤陀螺 /
- 信噪比
Abstract: The output spectra of fiber source, which transmitted through a single-mode (SM) fiber coupler, were measured by changing temperature. When the input wave of the fiber optical gyroscope (FOG) from the fiber coupler were transmitting wave and coupling wave, respectively, the temperature characteristics of signal-to-noise ratios (SNR) of FOG were simulated. The above experimental results demonstrate that the output power, mean-wavelength and spectral width of the spectra traveling through the arm of directly-transmission and that of the coupling of coupler will change when the temperature changes, and the temperature-stability of output power, mean-wavelength and spectral width of the directly-transmission arm is higher than that of the coupling arm. And the simulated results demonstrate that the errors of FOG's caused by the light wave outputting from the coupling arm of SM fiber coupler are almost 4 times of that from the directly-transmission arm.
- fiber coupler /
- spectrum /
- fiber-optic gyroscope /
- signal-to-noise ratio

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参考文献(10)

[1]	李翠花, 王巍.闭环光纤陀螺光电探测组件噪声特性[J].中国惯性技术学报, 2007, 4(15):501-508 Li Cuihua, Wang Wei.Noise characteristics of PIN-FET in closed-loop FOG[J].Journal of Chinese Inertial Technology, 2007, 4(15):501-508(in Chinese)
[2]	Burns W K, Moeller R P, Dandridge A.Excess noise in fiber gyroscope sources[J].IEEE Photonics Technology Letters, 1990, 2(8):606-608
[3]	Iwatsuki K.Excess noise reduction in fiber gyroscope using broader spectrum linewidth Er-doped superfluorescent fiber laser[J].IEEE Photonics Technology Letters, 1991, 3(3):281-283
[4]	Rabelo R C, Carvalho R T de, Blake J.SNR enhancement of intensity noise-limited FOGs[J].Journal of Lightwave Technology, 2000, 18(12):2146-2150
[5]	孙国飞, 那永林, 吴衍记.抑制掺铒光纤光源强度噪声的方法研究[J].红外与激光工程, 2007, 36(增刊):589-592 Sun Guofei, Na Yonglin, Wu Yanji.Research on suppression methods of Er-doped superfluorescent fiber source intensity noise[J].Infrared and Laser Engineering, 2007, 36(Supplement):589-592(in Chinese)
[6]	张瑞鹏.高精度光纤陀螺光源强度噪声抑制技术的研究[D].哈尔滨:哈尔滨工程大学自动化学院, 2011 Zhang Ruipeng.Study of suppression for light source intensity noise in high-precision FOG[D].Harbin:Institute of Automation, Harbin Engineering University, 2011(in Chinese)
[7]	李彦, 章敏, 李立京, 等.单模光纤耦合器的传输光谱温度特性[J].北京航空航天大学学报, 2012, 38(6):819-822 Li Yan, Zhang Min, Li Lijing, et al.Transmitting spectra-temperature characteristic of single-mode fiber coupler[J].Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(6): 819-822(in Chinese)
[8]	Lefèvre H C.The fiber-optic gyroscope[M].London:Artech House, 1993
[9]	杨远洪, 王峥, 伊小素, 等.基于掺铒超荧光光纤光源的高精度光纤陀螺[J].北京航空航天大学学报, 2005, 31(11):1159-1162 Yang Yuanhong, Wang Zheng, Yi Xiaosu, et al.High precision fiber optic gyroscope based on Er-doped superfluorescent fiber source[J].Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(11):1159-1162(in Chinese)
[10]	Burns W K.Degree of polarization in the Lyot depolarizer[J].Journal of Lightwave Technology, 1983, LT-1(3):475-479