Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 30, Issue 17, Pages 2751-2756Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2012.2205897
Keywords
Fiber Bragg gratings; multiplexing; optical fiber sensor; sensor arrays
Funding
- National Science Foundation [SIRG-0427951]
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We demonstrated a wavelength scanning time division multiplexing of 1000 ultra-weak fiber Bragg gratings (FBG) for distributed temperature sensing. The strong multiplexing capability and low crosstalk of the ultra-weak FBG sensors is investigated through both theoretical analysis and experiment. An automated FBG fabrication system was developed for fast 1000-FBG fabrication. The measurement accuracy of Bragg wavelengths for more than 80% FBGs is less than 20 pm, corresponding to 2 degrees C in temperature.
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