Journal
OPTICS EXPRESS
Volume 21, Issue 19, Pages 22799-22807Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.022799
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Funding
- National Science Foundation of China, NSFC [61205070]
- Major Program of the National Natural Science Foundation of China, NSFC [61290311]
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A time- and wavelength-division multiplexing sensor network based on ultra-weak fiber Bragg gratings (FBGs) was proposed. The low insertion loss and the high multiplexing capability of the proposed sensor network were investigated through both theoretical analysis and experimental study. The demodulation system, which consists of two semiconductor optical amplifiers and one high-speed charge-coupled device module, was constructed to interrogate 2000 serial ultra-weak FBGs with peak reflectivity ranging from -47 dB to -51 dB and a spatial resolution of 2 m along an optical fiber. The distinct advantages of the proposed sensor network make it an excellent candidate for the large-scale sensing network. (c) 2013 Optical Society of America
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