A Large Serial Time-Division Multiplexed Fiber Bragg Grating Sensor Network

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...

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Veröffentlicht in:	Journal of lightwave technology 2012-09, Vol.30 (17), p.2751-2756
Hauptverfasser:	Wang, Yunmiao, Gong, Jianmin, Dong, Bo, Wang, Dorothy Y., Shillig, Tyler J., Wang, Anbo
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bragg gratings Circuit properties Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Fiber Bragg gratings Information, signal and communications theory Integrated optics. Optical fibers and wave guides Multiplexing Optical and optoelectronic circuits Optical fiber communications optical fiber sensor Optical fiber sensors Optical fibers Optical telecommunications Optoelectronic devices Reflection Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices sensor arrays Signal and communications theory Telecommunications Telecommunications and information theory Temperature measurement
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Beschreibung
Zusammenfassung:	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 ^{\circ} C in temperature.
ISSN:	0733-8724 1558-2213
DOI:	10.1109/JLT.2012.2205897