论文信息 - A multi-point temperature warning sensor system with different thresholds using a multi-channel reference FBG

A multi-point temperature warning sensor system with different thresholds using a multi-channel reference FBG

20 ns-width pulses are modulated on a multi-wavelength fiber ring laser and transmit into two fiber Bragg grating based sensing heads with different wavelength. When the temperature exceeds the threshold at certain position, the light at corresponding time slot and wavelength will be reflected. Thus, the warning location of temperature increasing will be easily determined from OTDM (optical time division multiplexing) demodulation technique.

[1] Qiang Wu,et al. General design approach to multichannel fiber Bragg grating , 2006, Journal of Lightwave Technology.

[2] D. Jackson,et al. Simple multiplexing scheme for a fiber-optic grating sensor network. , 1993 .

[3] A. Kersey,et al. Multiplexed fiber Bragg grating strain-sensor system with a fiber Fabry - Perot wavelength filter. , 1993, Optics letters.

[4] Xiangfei Chen,et al. High channel-count comb filter based on chirped sampled fiber Bragg grating and phase shift , 2005, IEEE Photonics Technology Letters.

[5] M. Guy,et al. FBG-based multichannel low dispersion WDM filters , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[6] Alan D. Kersey,et al. Structural strain mapping using a wavelength/time division addressed fiber Bragg grating array , 1994, Other Conferences.

[7] Xiang-Fei Chen,et al. Novel flat multichannel filter based on strongly chirped sampled fiber Bragg grating , 2000, IEEE Photonics Technology Letters.

[8] J. Senior,et al. Devices for wavelength multiplexing and demultiplexing , 1989 .

[9] Michael A. Davis,et al. Fiber grating sensors , 1997 .

[10] Alan D. Kersey,et al. Design and performance of a fiber Bragg grating distributed strain sensor system , 1995, Smart Structures.

[11] Y. Painchaud,et al. FBG-based multi-channel low dispersion WDM filters , 2002 .