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Proceedings Paper

Study on demodulating wide range off-centering of distributed FBG by AWG
Author(s): Xu Wan; BaoJin Peng; YaQiang Shen; HongZhen Jin
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Paper Abstract

According to the deficiencies of static demodulating method of Arrayed Waveguide Grating (AWG) for Fiber Bragg Grating (FBG) reflecting wave wavelength and the characteristic of central wavelength of tunable AWG shifting with applied voltage, the dynamic demodulating method based on tunable AWG for FBG's central wavelength wide-range is presented. The experiment systems are set up with tunable AWG, adjustable voltage source, photomultiplier, data acquisition card, and computer. Experiment results show that the system can effectively resolve the problems of measurement wide-range off-centering for the FBG, and computer can real-timely report the results of off-centering of the FBG central wavelength. AWG with the 2nm channel-spacing is used to demodulate, and the off-centering range of reflecting wave wavelength of the measured FBG reach 6nm, its measurement error is less than 0.02%.

Paper Details

Date Published: 20 May 2009
PDF: 6 pages
Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72833V (20 May 2009); doi: 10.1117/12.828793
Show Author Affiliations
Xu Wan, Zhejiang Normal Univ. (China)
BaoJin Peng, Zhejiang Normal Univ. (China)
YaQiang Shen, Zhejiang Normal Univ. (China)
HongZhen Jin, Zhejiang Normal Univ. (China)


Published in SPIE Proceedings Vol. 7283:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

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