Fiber Ring Laser Sensor for Temperature Measurement

A novel multi-longitudinal-mode fiber ring laser temperature sensor based on the beat frequency demodulation technology is presented. The beat frequency between any two modes varies linearly with the temperature. It is experimentally demonstrated that the temperature can be measured with a sensitivi...

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Veröffentlicht in:	Journal of lightwave technology 2010-12, Vol.28 (23), p.3403-3408
Hauptverfasser:	Yin, Zuowei, Gao, Liang, Liu, Shengchun, Zhang, Liang, Wu, Feixiang, Chen, Lin, Chen, Xiangfei
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Beat frequencies Beat frequency Circuit properties Demodulation Detection Doped-insulator lasers and other solid state lasers Electric, optical and optoelectronic circuits Electronics Exact sciences and technology fiber laser Fiber lasers Fiber-optic instruments Fibers Frequency measurement Frequency spectrum Fundamental areas of phenomenology (including applications) Instruments, apparatus, components and techniques common to several branches of physics and astronomy Integrated optics. Optical fibers and wave guides Lasers Measurement by laser beam Optical and optoelectronic circuits Optical fiber couplers Optical fiber sensors Optical instruments, equipment and techniques Optics Physics Ring lasers Sensors Temperature measurement temperature sensor Temperature sensors
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Beschreibung
Zusammenfassung:	A novel multi-longitudinal-mode fiber ring laser temperature sensor based on the beat frequency demodulation technology is presented. The beat frequency between any two modes varies linearly with the temperature. It is experimentally demonstrated that the temperature can be measured with a sensitivity of 10.24 kHz/° C @ 1581.7 MHz between 21° C to 50 ° C, 7.42 kHz/° C @ 1175.6 MHz between 22 °C to 240 °C and 8.48 kHz/° C @ 1480.5 MHz between 100 °C to 1000 °C. This method offers a simple scheme for fiber temperature sensing by employing a low-frequency electrical frequency spectrum analyzer.
ISSN:	0733-8724 1558-2213
DOI:	10.1109/JLT.2010.2086046