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Proceedings Paper

High multiplexing capability and ultrahigh resolution interrogation for optical fiber Bragg grating sensing system
Author(s): Yongjun Wang; Xiaolei Zhang; Yongchao Liu; Xiaolin Liu; Zhaoyi Yang; Zhi Wang
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Paper Abstract

A high multiplexing capability and ultrahigh resolution interrogation scheme for optical fiber Bragg grating sensing system was proposed. A scan ring laser based on semiconductor optical amplifier (SOA) and tunable Fabry-Perot interferometer can provide 70nm bandwidth and 32 monitoring channels, and therefore the interrogator can simultaneously detect more than 1000 fiber Bragg grating (FBG) sensors. In the interrogation scheme, a gas absorption spectral line was used as a wavelength reference, and a comb filter was designed as a standard device that can dynamically calibrate the wavelength of FBG sensors. Therefore, the wavelength resolution can reach to 0.5 pm.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842146 (17 October 2012); doi: 10.1117/12.970280
Show Author Affiliations
Yongjun Wang, Beijing Univ. of Posts and Telecommunications (China)
Xiaolei Zhang, Beijing Univ. of Posts and Telecommunications (China)
Yongchao Liu, Beijing Univ. of Posts and Telecommunications (China)
Xiaolin Liu, Beijing Univ. of Posts and Telecommunications (China)
Zhaoyi Yang, Beijing Univ. of Posts and Telecommunications (China)
Zhi Wang, Beijing Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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