25 October 2016 All-optical relative intensity noise suppression method for the high precision fiber optic gyroscope
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Proceedings Volume 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage; 101580L (2016) https://doi.org/10.1117/12.2246725
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
The relative intensity noise (RIN) is a main factor that limits the detection accuracy of the high precision fiber optic gyroscope (FOG). The RIN spectrum is determined by the normalized autocorrelation of the optical spectrum of the broadband source and is intrinsically different from other fundamental noises. In this paper, we propose an all-optical technique to suppress the RIN. With the power addition of the optical waves from the signal optical path and the reference optical path, the RIN is effectively eliminated at the eigen frequency of the FOG, which is also the demodulation window for the rotation rate signal. Compared with the traditional optical configuration of the FOG, there is only one additional optical component. Experimental results show that, with this method, we can achieve a nearly 3-fold improvement in the angular random walk coefficient. The improved optical configuration for RIN suppression is simple to realize and suitable for engineering application.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yue Zheng, Chunxi Zhang, Lijing Li, Lailiang Song, Yuhui Zhang, "All-optical relative intensity noise suppression method for the high precision fiber optic gyroscope", Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 101580L (25 October 2016); doi: 10.1117/12.2246725; https://doi.org/10.1117/12.2246725
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