Research on accurate position method based on code division multiplexing technology for distributed FBG system

Guangwei Fu; Zonghui Zhang; Weiwei Dou; Bilin Wang

doi:10.1117/12.2505598

12 December 2018 Research on accurate position method based on code division multiplexing technology for distributed FBG system

Guangwei Fu, Zonghui Zhang, Weiwei Dou, Bilin Wang

Author Affiliations +

Proceedings Volume 10849, Fiber Optic Sensing and Optical Communication; 108491A (2018) https://doi.org/10.1117/12.2505598
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

A accurate position method for distributed fiber grating system based on code division multiplexing technology is proposed. In this paper, by using the fiber grating characteristics and code division multiplexing technology, the system are optimized. By designing delay interferometer, the optical signal modulation and demodulation are gained , which effectively improve the system's signal to noise ratio. Through the simulation experiment, the positioning detection is realized by discriminating the fiber gratings at different positions on the optical fiber. Experiments were carried out on 6m and 2.2km optical fibers respectively, the preliminary results proved the correctness and feasibility of the method.

Citation Download Citation

Guangwei Fu, Zonghui Zhang, Weiwei Dou, and Bilin Wang "Research on accurate position method based on code division multiplexing technology for distributed FBG system", Proc. SPIE 10849, Fiber Optic Sensing and Optical Communication, 108491A (12 December 2018); https://doi.org/10.1117/12.2505598

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