电流调制解调在谐振式光学陀螺中的应用
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- 英文论文题名：Application of current modulation and demodulation in resonator optic gyro
- 论文作者：雷明 ; 于怀勇 ; 冯喆 ; 吴衍记
- 英文论文作者：LEI Ming ; YU Huai-yong ; FENG Zhe ; WU Yan-ji ; Beijing Institute of Automatic Control Equipment
- 年：2016
- 作者机构：北京自动化控制设备研究所;
- 论文关键词：谐振式光学陀螺 ; 外腔半导体激光器 ; 电流调制 ; 频率跟踪锁定
- 英文论文关键词：resonator optic gyro ; external cavity laser diode ; current modulation ; frequency-tracking and locking
- 会议召开时间：2016-09-27
- 会议录名称：2016年光学陀螺及系统技术发展与应用研讨会论文集
- 语种：中文
- 分类号：TH824.3
- 学会代码：ZGGZ
- 会议名称：2016年光学陀螺及系统技术发展与应用研讨会
- 会议地点：中国江西九江
- 主办单位：中国惯性技术学会
- 学会名称：中国惯性技术学会
- 页数：5
- 文件大小：892k
- 原文格式：D
- 会议级别：全国
摘要
谐振式光学陀螺(Resonator Optic Gyro,ROG)是基于Sagnac效应产生的谐振频率差来测量旋转角速度的一种新型光学传感器。本文选用体积小、线宽窄、波长可调谐的外腔半导体激光器(External Cavity Laser Diode,ECLD)来构建陀螺系统,有助于ROG的小型化和集成化,在信号检测上采用电流调制解调方案取代传统的相位调制方案,进一步简化了系统光路结构,同时电流调制方案具有调制频差大、陀螺检测灵敏度高等技术优势。对谐振曲线和不同调制电流幅值下的解调曲线进行了理论分析和仿真,得到了对应陀螺最大灵敏度的调制电流,控制方案上采用基于数字信号处理器的频率跟踪锁定方案,搭建了陀螺信号检测电路并进行了实验验证,最后,对陀螺系统进行了动态和静态测试,测得陀螺标度因数为1.61,600s时间内的零偏稳定性为2.7°/s。
Resonator Optic gyro(ROG) is a novel optical sensor to measure the rotation rate based on the resonance frequency difference generated by the Sagnac effect. This paper adopts the external cavity laser diode(ECLD) which has the advantages of small volume, narrow-linewidth and wavelength tunable to construct the gyroscope system is helpful to the miniaturization and integration of the ROG, by the utilization of the current modulation and demodulation scheme on the detection of signal, further simplifies the optical structure, in the mean time, the frequency deviation of the current modulation is large and can easily reach the maximum sensitivity of the ROG. The resonance curve and the demodulation curve under different modulation current amplitude are analyzed from the simulation and theory, the optimum modulation current amplitude corresponding to the maximum sensitivity is obtained. A novel method for frequency-tracking and locking of ECLD based on the digital signal processor is adopt, the signal detection circuit is proposed and gains a good result, finally, the dynamic and static experiments results show that the scale factor of the ROG is 1.61 and the the bias stability over 600 s is 2.7 °/s.
Resonator Optic gyro(ROG) is a novel optical sensor to measure the rotation rate based on the resonance frequency difference generated by the Sagnac effect. This paper adopts the external cavity laser diode(ECLD) which has the advantages of small volume, narrow-linewidth and wavelength tunable to construct the gyroscope system is helpful to the miniaturization and integration of the ROG, by the utilization of the current modulation and demodulation scheme on the detection of signal, further simplifies the optical structure, in the mean time, the frequency deviation of the current modulation is large and can easily reach the maximum sensitivity of the ROG. The resonance curve and the demodulation curve under different modulation current amplitude are analyzed from the simulation and theory, the optimum modulation current amplitude corresponding to the maximum sensitivity is obtained. A novel method for frequency-tracking and locking of ECLD based on the digital signal processor is adopt, the signal detection circuit is proposed and gains a good result, finally, the dynamic and static experiments results show that the scale factor of the ROG is 1.61 and the the bias stability over 600 s is 2.7 °/s.
引文
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[7]Hong L F,Zhang Ch X,Feng L Sh,et al.Effect of phase modulation nonlinearity in resonator micro-optic gyro[J].Optical Engineering,2011,50(9).
[8]杨桂东,马慧莲,张旭琳,等.一种应用于谐振式微型光学陀螺的高频锁相放大器的设计[J].传感技术学报,2005,18(4):863-866
[9]Lefevre H C.The fiber-optic gyroscope[M].Norwood,MA:Artech House,1993.
[10]洪灵菲,张春熹,冯丽爽.谐振式光学陀螺中相位调制非线性研究[J].中国激光,2011,37(11):1105004-1-1105004-6.
[11]Zarinetchi F,Ezekiel S.Observation of lock-in behavior in a passive resonator gyroscope[J].Optics Letters,1986,11:401-403.
[12]Vlasov Y,Green W.High-throughput silicon nanophotonic wavelength-insensitive switch for on-chip optical networks[J].Nat.Photon,2008,2:242-246.
[13]Iwatsuki K,Hotate K,Higashiguchi M.Effect of Rayleigh backscattering in an optical passive ring-resonator gyro[J].Applied Optics,1984,23:3916-3924.
[14]Lei M,Feng L,Zhi Y.Experiments on resonator micro-optic gyro using external cavity laser diode[J].Optical Engineering,2012,51:51104601.
[15]马慧莲,金仲和,丁纯,等.激光器线宽对光纤环形谐振腔谐振特性的影响[J].中国激光,2003,30(8):731-734.
[16]于怀勇,张春熹,冯丽爽,等.硅基光学谐振式陀螺瑞利背向散射噪声分析[J].光学学报,2009,29(3):799-804.
[2]Sanders G A.Critical review of resonator fiber optic gyroscope technology[J].SPIE Fiber Optic Sensors,1992,Vol.CR44:133-115.
[3]Takiguchi K,Hotate K.Partially digital-feedback scheme and evaluation of optical kerr-effect induced bias in optical passive ring-resonator gyro[J].IEEE Photonics Technology Letters,1991,3(7):679-681.
[4]Meyer R E,Ezekiel S,Stowe D W,et al.Passive fiber-optic ring resonator for rotation sensing[J].Optics Letters,1983,8(12):644-646.
[5]Zarinetchi F,Ezekiel S.Observation of lock-in behavior in a passive resonator gyroscope[J].Optics Letters,1986,11(6):401-403.
[6]冯翔,马迎建,于怀勇,等.谐振式光学陀螺最佳灵敏度调节的研究[J].中国激光,2010,37(4):1064-1067.
[7]Hong L F,Zhang Ch X,Feng L Sh,et al.Effect of phase modulation nonlinearity in resonator micro-optic gyro[J].Optical Engineering,2011,50(9).
[8]杨桂东,马慧莲,张旭琳,等.一种应用于谐振式微型光学陀螺的高频锁相放大器的设计[J].传感技术学报,2005,18(4):863-866
[9]Lefevre H C.The fiber-optic gyroscope[M].Norwood,MA:Artech House,1993.
[10]洪灵菲,张春熹,冯丽爽.谐振式光学陀螺中相位调制非线性研究[J].中国激光,2011,37(11):1105004-1-1105004-6.
[11]Zarinetchi F,Ezekiel S.Observation of lock-in behavior in a passive resonator gyroscope[J].Optics Letters,1986,11:401-403.
[12]Vlasov Y,Green W.High-throughput silicon nanophotonic wavelength-insensitive switch for on-chip optical networks[J].Nat.Photon,2008,2:242-246.
[13]Iwatsuki K,Hotate K,Higashiguchi M.Effect of Rayleigh backscattering in an optical passive ring-resonator gyro[J].Applied Optics,1984,23:3916-3924.
[14]Lei M,Feng L,Zhi Y.Experiments on resonator micro-optic gyro using external cavity laser diode[J].Optical Engineering,2012,51:51104601.
[15]马慧莲,金仲和,丁纯,等.激光器线宽对光纤环形谐振腔谐振特性的影响[J].中国激光,2003,30(8):731-734.
[16]于怀勇,张春熹,冯丽爽,等.硅基光学谐振式陀螺瑞利背向散射噪声分析[J].光学学报,2009,29(3):799-804.