Fiber Bragg grating sensors array based on optical frequency domain reflectometry technology

Yanling Xiong; Lijuan He; Tao Chen; Xuan Wang; Wenlong Yang

doi:10.1117/12.725888

5 March 2007 Fiber Bragg grating sensors array based on optical frequency domain reflectometry technology

Yanling Xiong, Lijuan He, Tao Chen, Xuan Wang, Wenlong Yang

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65952L (2007) https://doi.org/10.1117/12.725888
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

In this paper, the optimized Fiber Bragg Grating Sensor Arrays system, which was based on Optical Frequency Domain Reflectometry(OFDR) Multiplexing and Fabry-Perot Tunable Optical Filter(TOF) Demodulation Technology was Introduced, that FBG sensors in the same operating waveband can be used in different beat frequencies positions was proposed, and then a simulation was made for this proposition. As a result, in the case of duty ratio of the modulation signal w=1, the maximum amplitude B=4OMHz, and saw-tooth frequency f_s=5kHz,the maximum measurement range can reach 4000m and , the minimum resolution can be reduced to 2.58m. In addition, A/D converting circuits and a DSP COMS chip were suggested to be designed for the function of frequency mixing, wavelength filtering and Fast Fourier Transform so that instead of expensive frequency analyzer, so that the system cost can be reduced.

Citation Download Citation

Yanling Xiong, Lijuan He, Tao Chen, Xuan Wang, and Wenlong Yang "Fiber Bragg grating sensors array based on optical frequency domain reflectometry technology", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65952L (5 March 2007); https://doi.org/10.1117/12.725888

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