Abstract
An interrogation system based on two semiconductor optical amplifiers for weak fiber Bragg gratings (FBGs) was proposed. The first semiconductor optical amplifier (SOA) was used to modulate the light, and the second SOA separated the reflected signal from the different FBGs through delayed switching. The proposed system has lower insertion loss and higher spatial resolution, and can interrogate the time- and wavelength-division multiplexed FBG array. Up to 50 FBGs, with a reflectivity of 0.2% and a spatial resolution of 5 m along the optical fiber, were distinguished to demonstrate the interrogation system.
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References
M. Zhang, Q. Sun, Z. Wang, X. Li, H. Liu, and D. Liu, “A large capacity sensing network with identical weak fiber Bragg gratings multiplexing,” Optics Communications, 2012, 285(13–14), 3082–3087.
D. J. F. Cooper, T. Coroy, and P. W. E. Smith, “Time-division-multiplexing of large serial fiber -optic Bragg grating sensor arrays,” Applied Optics, 2001, 40(11), 2643–2554.
J. Ou and Z. Zhou, “Optic fiber Bragg-grating-based sensing technologies and their applications in structural health monitoring,” in Proc. SPIE, vol. 6595, 726612-1–726612-8, 2007.
W. H. Chung, H. Y. Tam, P. K. A. Wai, and A. Khandelwal, “Time- and wavelength-division multiplexing of FBG sensors using a semiconductor optical amplifier in ring cavity configuration,” IEEE Photonics Technology Letters, 2005, 17(12): 2709–2711.
G. D. Lloyd, L. Bennion, L. A. Everall, and K. Sugden, “Novel resonant cavity TDM demodulation scheme for FBG sensing,” in Conference on Lasers and Electro-Optics, San Francisco, California, May 16–21, 2004.
Y. Dai, Y. Liu, J. Leng, G. Deng, and A. Asundi, “A novel time-division multiplexing fiber Bragg grating sensor interrogator for structural health monitoring,” Optics and Lasers in Engineering, 2009, 47(10): 1028–1033, 2009.
Y. Wang, J. Gong, D. Wang, B. Dong, W. Bi, and A. Wang, “A quasi-distributed sensing network with time-division-multiplexed fiber Bragg gratings,” IEEE Photonics Technology Letter, 2011, 23(2): 70–72.
Y. M. Wang, J. M. Gong, D.Y. Wang, T. J. Shilig, and A. Wang, “A large serial time-division multiplexed fiber Bragg grating sensor network,” Lightwave Technology, 2012, 30(17): 2751–2756.
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Luo, Z., Wen, H. & Guo, H. An interrogation system based on two semiconductor optical amplifiers for weak fiber Bragg gratings. Photonic Sens 4, 168–172 (2014). https://doi.org/10.1007/s13320-014-0168-1
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DOI: https://doi.org/10.1007/s13320-014-0168-1