[1] JAVAHIRALY N. Review on hydrogen leak detection: comparison betweenfiber optic sensors based on different designs with palladium ［J］.Optical Engineering, 2015, 54(3): 30901.

[2] MU K, TONG X L, HU P, et al.. Technology status and development trend of hydrogen sensor ［J］.Laser Journal, 2016, 37(5): 1-5. (in Chinese)

[3] GREMAUD R, GONZALEZ-SILVEIRA M, PIVAK Y, et al.. Hydrogenography of PdHx thin films: Influence of H-induced stress relaxation processes ［J］.Acta Materialia, 2009, 57(4): 1209-1219.

[4] LI Y L, ZHOU Z D, LIU Y. The hydrogen-sensitive spectral characteristics of multi-layer transmission optical fiber hydrogen sensor ［J］.Journal of Optoelectronics·Laser, 2016, 27(9): 908-913. (in Chinese)

[5] MONZN-HERNNDEZ D, LUNA-MORENO D, MARTíNEZ-ESCOBAR D. Fast response fiber optic hydrogen sensor based on palladium and gold nano-layers ［J］.Sensors and Actuators B: Chemical, 2009, 136(2): 562-566.

[6] YANG F. An Investigation of the Hydrogen Sensor by the Use of LPG Coated with a Thin Pd-Ag Film ［D］. Tianjin: Tianjin University, 2012. (in Chinese)

[7] SONG H, CHEN Y, ZHANG G, et al.. Optical fiber hydrogen sensor based on an annealing-stimulated Pd-Y thin film ［J］.Sensors and Actuators B: Chemical, 2015, 216: 11-16.

[8] FAVIER F. Hydrogen sensors and switches from electrodeposited palladium mesowire arrays ［J］.Science, 2001, 293(5538): 2227-2231.

[9] SCHEDIN F, GEIM A K, MOROZOV S V, et al.. Detection of individual gas molecules adsorbed on graphene ［J］.Nature Materials, 2007, 6(9): 652-655.

[10] ZENG X Q, LATIMER M L, XIAO Z L, et al.. Hydrogen gas sensing with networks of ultrasmall palladium nanowires formed on filtration membranes ［J］.Nano letters, 2011, 11(1): 262-268.

[11] IBAEZ F J, ZAMBORINI F P. Reactivity of hydrogen with solid-state films of alkylamine-and tetraoctylammonium bromide-stabilized Pd, PdAg, and PdAu nanoparticles for sensing and catalysis applications ［J］.Journal of the American Chemical Society, 2008, 130(2): 622-633.

[12] SUN Y, WANG H H H, XIA M. Single-walled carbon nanotubes modified with Pd nanoparticles: unique building blocks for high-performance, flexible hydrogen sensors ［J］.The Journal of Physical Chemistry C, 2008, 112(4): 1250-1259.

[13] YU Z, JIN L, SUN L, et al.. Highly sensitive fiber taper interferometric hydrogen sensors ［J］.IEEE Photonics Journal, 2016, 8(1): 1-9.

[14] DAI J X, YANG M H, CHENG Y, et al.. D-shape optical fiber hydrogen sensor based on WO3-Pd composite film ［J］. Acta Photonica Sinica, 2011, 40(7): 1003-1006.(in Chinese)

[15] ZHOU X, DAI Y, ZOU M, et al.. FBG hydrogen sensor based on spiral microstructure ablated by femtosecond laser ［J］.Sensors and Actuators, B: Chemical, 2016, 236: 392-398.

[16] DAI J, YANG M, YU X, et al.. Greatly etched fiber Bragg grating hydrogen sensor with Pd/Ni composite film as sensing material ［J］.Sensors and Actuators B: Chemical, 2012, 174: 253-257.

[17] SIRBULY D J, LTANT S E, RATTO T V. Hydrogen sensing with subwavelength optical waveguides via porous silsesquioxane-palladium nanocomposites ［J］.Advanced Materials, 2008, 20(24): 4724-4727.

[18] MONZN-HERNNDEZ D, LUNA-MORENO D, ESCOBAR D M, et al.. Optical microfibers decorated with PdAu nanoparticles for fast hydrogen sensing ［J］.Sensors and Actuators B: Chemical, 2010, 151(1): 219-222.