[1] TABIBAZAR M, SUTAPUN B, PETRICK R, et al. Highly sensitive hydrogen sensors using palladium coated fiber optics with exposed cores and evanescent field interactions ［J］. Sensors and Actuators B, 1999, 56(1): 158163.

[2] KHIJWANIA S K, GUPTA B D. Fiber optic evanescent field absorption sensor: Effect of fiber parameters and geometry of the probe［J］. Optical and Quantum Electronics, 1999, 31(8): 625636.

[3] SEKIMOTO S, NAKAGAWA H, OKAZAKI S, et al. A fiberoptic evanescentwave hydrogen gas sensor using palladiumsupported tungsten oxide［J］. Sensors and Actuators B, 2000, 66(1): 142145.

[4] YANG M, SUN Y, ZHANG D, et al. Using Pd/WO3 composite thin films as sensing materials for optical fiber hydrogen sensors［J］. Sensors and Actuators B, 2010, 143(2): 750753.

[5] LIU Hongliang, YANG Minghong, DAI Jixiang, et al. Research on characteristic of fiber optic hydrogen sensor based on palladium and its composite films［J］. Acta Optica Sinica, 2010, 30(12): 33983402.

[6] BUTLER M A. Micromirror opticalfiber hydrogen sensor［J］. Sensors and Actuators B, 1994, 22(2): 155163.

[7] TAN Xia, XIAO Shali, QIU Liudong, et al. Etalontype fiberoptic hydrogen sensors［J］. Optical Instruments, 2003, 25(3): 3235.

[8] YANG Zhen, ZHANG Min, LIAO Yanbiao, et al. A study on extrinsic FabryPerot interferometric optical fiber hydrogen sensor［J］. Optoelectronic Technology, 2010, 30(1): 711.

[9] CAUCHETEUR C, DEBLIQUY M, LAHEM D, et al. Hybrid fiber gratings coated with a catalytic sensitive layer for hydrogen sensing in air［J］. Optics Express, 2008, 16(21): 1685416859.

[10] ALEIXANDREA M, CORREDERAB P, HERNANZB M L, et al. Study of a palladium coated Bragg grating sensor to detect and measure low hydrogen concentrations［C］. Spanish Conference on Electron Devices, 2007: 223225.

[11] ZHOU Jinlong, DONG Xiaopeng, SHI Zhidong. The theoretical and experimental research on the bending sensitivity of dshaped fiber bragg grating［J］. Acta Photonica Sinica, 2006, 35(11): 17341737.

[12] CHEN Zhe, CUI Fei, ZENG Yingxin. Theoretical analysis on optical propagation characteristics of sidepolished fibers［J］. Acta Photonica Sinica, 2008, 37(5): 918923.

[13] FAN Ruoyan, CHE Zhe, LIU Linhe, et al. Optical fiber refractive sensor with double reflective wavelength based on side polished fiber Bragg grating［J］. Chinese Journal of Lasers, 2009, 36(5):11341139.

[14] CHEN Zhe, LIU Linhe. Temperature compensation of fiber Bragg grating based on side polishing and overlay［J］. Chinese Journal of Lasers, 2008, 35(6): 889892.

[15] TIEN Chuenlin, CHEN Hongwei, LIU Wenfung, et al. Hydrogen sensor based on sidepolished fiber Bragg gratings coated with thin palladium film［J］. Thin Solid Films, 2008, 516(16): 53605363.

[16] HE Wei, CHEN Hongbo, MEI Jiachun, et al. Study on the strainoptic effect in fiber Bragg gratings ［J］. Journal of Optoelectronics·Laser, 2002, 13(9): 885888.