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Ultrasensitive Fiber Optic Interferometry and Improvements in Fiber Optic Gyroscopes and Sensors Employing Nonlinear Phase Transducers

超灵敏光纤干涉测量以及采用非线性相位传感器的光纤陀螺仪和传感器的改进

基本信息

批准号：
9312674
负责人：
Keith Wanser
金额：
$ 15.39万
依托单位：
CSU Fullerton Auxiliary Services Corporation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1994
资助国家：
美国
起止时间：
1994-02-15 至 1997-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9312674&HistoricalAwards=false
关键词：
Ultrasensitive Fiber Optic Interferometry Improvements

项目摘要

9312674 Wanser We plan to investigate, experimentally and theoretically, the fundamental performance limits of fiber optic interferometers and methods for improving fiber optic gyroscopes and sensors employing nonlinear phase transducers. Phase noise in Mach Zehnder, and polarization fade free Michelson interferometers will be measured at 300 K and 77 K, and compared to a recent theory. The phase noise in novel polarization stabilized fiber optic ring resonator interferometers will be investigated both experimentally and theoretically. The minimum detectable phase shift of a novel double pass ring resonator configuration for comparable (short) length interferometers. Sources of noise, residual signals and offset in nonlinear magnetostrictive transducers will be investigated experimentally and theoretically. Novel methods of transducer bias, dithering, and interferometer signal demodulation and feedback stabilization will be employed. A nonlinear driven parametric oscillator model of the magnetic transducer will be developed to study the generation of subharmonics and nonlinear noise, and the role played by nonlinearity in generation of residual signals. The final area to be addressed is performance improvements in fiber optic gyroscopes and production and measurement of ultralow degree of polarization (P-10-5). These improvements are also expected to lower the cost and improve maunfacturability and usability of fiber optic gyroscopes by elimination of some components, and substantial reduction of serve performance specifications on others. ***

9312674 Wanser我们计划从实验和理论上研究光纤干涉仪的基本性能极限，以及使用非线性相位传感器改进光纤陀螺和传感器的方法。马赫-曾德尔干涉仪和无偏振衰落迈克尔逊干涉仪的相位噪声将在300K和77K下进行测量，并与最近的理论进行比较。对新型偏振稳定光纤环形腔干涉仪的相位噪声进行了实验和理论研究。用于可比较(短)长度干涉仪的新型双通环形谐振器配置的最小可检测相移。从实验和理论上研究了非线性磁致伸缩换能器的噪声源、残余信号和偏移量。将采用传感器偏置、抖动、干涉仪信号解调和反馈稳定的新方法。建立了磁换能器的非线性驱动参数振子模型，研究了亚谐波和非线性噪声的产生，以及非线性在残余信号产生中的作用。最后要解决的领域是光纤陀螺仪的性能改进以及超低偏振度(P-10-5)的生产和测量。这些改进还有望通过取消一些部件并大幅降低对其他部件的服务性能要求来降低成本，提高光纤陀螺仪的可制造性和可用性。***