[1] M. Tabib-Azar, B. Sutapun, R. Petrick, and A. Kazemi, “Highly sensitive hydrogen sensors using palladium coated fiber optics with exposed cores and evanescent field interactions,” Sensors and Actuators B: Chemical, vol. 56, no. 1–3, pp. 158–163, 1999.

[2] S. K. Khijwania and B. D. Gupta, “Fiber optic evanescent field absorption sensor: effect of fiber parameters and geometry of the probe,” Optical and Quantum Electronics, vol. 31, no. 8, pp. 625–636, 1999.

[3] S. Sekimoto, H. Nakagawa, S. Okazaki, K. Fukuda, S. Asakura, T. Shigemori, and S. Takahashi, “A fiber-optic evanescent-wave hydrogen gas sensor using palladium-supported tungsten oxide,” Sensors and Actuators B: Chemical, vol. 66, no. 1, pp. 142–145, 2000.

[4] J. Villatoro and D. Monzón-Hernándea, “Fast detection of hydrogen with nano fiber tapers coated with ultra thin palladium layers,” Optics Express, vol. 13, no. 13, pp. 5087–5092, 2005.

[5] D. Monzón-Hernández, D. Luna-Moreno, and D. Martínez-Escobar, “Fast response fiber optic hydrogen sensor based on palladium and gold nano-layers,” Sensors and Actuators B: Chemical, vol. 136, no. 2, pp. 562–566, 2009.

[6] M. Yang, Y. Sun, D. Zhang, and D. Jiang, “Using Pd/WO3 composite thin films as sensing materials for optical fiber hydrogen sensors,” Sensors and Actuators B: Chemical, vol. 143, no. 2, pp. 750–753, 2010.

[7] M. A. Butler, “Micromirror optical-fiber hydrogen sensor,” Sensors and Actuators B: Chemical, vol. 22, no. 2, pp. 155–163, 1994.

[8] X. B évenot, A. Trouillet, C. Veillas, H. Gagnaire, and M. Clément, “Hydrogen leak detection using an optical fiber sensor for aerospace applications,” Sensors and Actuators B: Chemical, vol. 67, no. 1–2, pp. 57–67, 2000.

[9] K. Lin, Y. Lu, J. Chen, R. Zheng, P. Wang, and H. Ming, “Surface plasmon resonance hydrogen sensor based on metallic grating with high sensitivity,” Optics Express, vol. 16, no. 23, pp. 18599–18604, 2008.

[10] C. Ma and A. Wang, “Optical fiber tip acoustic resonator for hydrogen sensing,’’ Optics Letters, vol. 35, no. 12, pp. 2043–2045, 2010.

[11] M. Buric, T. Chen, M. Maklad, P. R. Swinehart, and K. P. Chen, “Multiplexable low-temperature fiber Bragg grating hydrogen sensors,” IEEE Photonics Technology Letters, vol. 21, no. 21, pp. 1594–1596, 2009.

[12] B. Sutapun, M. Tabib-Azar, and A. Kazemi, “Pd-coated elastooptic fiber optic Bragg grating sensors for multiplexed hydrogen sensing,” Sensors and Actuators B: Chemical, vol. 60, no. 1, pp. 27–34, 1999.

[13] C. Caucheteur, M. Debliquy, D. Lahem, and P. Mégret, “Hybrid fiber gratings coated with a catalytic sensitive layer for hydrogen sensing in air,” Optics Express, vol. 20, no. 21, pp. 16854–16859, 2008.

[14] M. Aleixandrea, P. Correderab, M. L. Hernanzb, et al., “Study of a palladium coated Bragg grating sensor to detect and measure low hydrogen concentrations,” in Proc. 2007 Spanish Conference on electron devices (IEEE 4271210), Madrid, Jan. 31–Feb. 2, pp. 223–225, 2007.

[15] J. H. Lee, J. H. Kim, Y. G. Han, S. H. Kim, and S. B. Lee, “Investigation of Raman fiber laser temperature probe based on fiber Bragg gratings for long-distance remote sensing applications,” Optics Express, vol. 12, no. 8, pp. 1747–1752, 2004.

[16] G. T. Kanellos, G. Papaioannou, D. Tsiokos, C. Mitrogiannics, G. Nianios, and N. Pleros, “Two dimensional polymer-embedded quasidistributed FBG pressure sensor for biomedical applications,” Optics Express, vol. 18, no. 1, pp. 179–186, 2010.

[17] D. Lin, X. Jiang, F. Xie, W. Zhang, Z. Lin, and I. Bennion, “High stability multiplexed fiber interferometer and its application on absolute displacement measurement and on-line surface metrology,” Optics Express, vol. 12, no. 23, pp. 5729–5734, 2004.

[18] J. Zhou, X. Dong, and Z. Shi, “Theoretical and experimental investigation of bending sensitivity of the D-shaped fiber Bragg gratings,” Chinese Acta Photonica Sinica, vol. 35, no. 11, pp. 1734–1737, 2006 (in Chinese).

[19] C. Tien, H. Chen, W. Liu, S. Jyu, S. Lin, and Y. Lin, “Hydrogen sensor based on side-polished fiber Bragg gratings coated with thin palladium film,” Thin Solid Films, vol. 516, no. 16, pp. 5360–5363, 2008.

[20] D. Kersey, M. A. Davis, H. J. Patrick, M. LeBlanc, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, “Fiber grating sensors,” Journal of Lightwave Technology, vol. 15, no. 8, pp. 1442–1463, 1997.

[21] K. O. Hill, B. Malo, F. Bilodeau, D, C. Johnson, and J. Albert, “Bragg gratings using fabricated in monomode photosensitive optical fiber by UV exposure thorough a phase mask,” Apply Physics Letter, vol. 62, no. 10, pp. 1035–1037, 1993.

[22] Z. Chen and L. Liu, “Wavelength tuning of fiber Bragg grating based on fiber side polishing,” in Proc. SPIE, vol. 7157, pp. 71570J-1–71570J-6, 2009.

[23] A. Yariv and H. V. Winsor, “Proposal for detection of magnetic fields through magnetostrictive perturbation of optical fibers,” Optics Letters, vol. 5, no. 3, pp. 87–89, 1980.

[24] S. C. Rashleigh, “Magnetic-field sensing with a single-mode fiber,” Optics Letters, vol. 6, no. 1, pp. 19–21, 1981.

[25] A. D. Kersey, D. A. Jackson, and M. Corke, “Single-mode fiber optic magnetometer with DC bias field stabilization,” Journal of Lightwave Technology, vol. 3, no. 4. pp. 836–840, 1985.

[26] J. Jarzynski, J. H. Cole, J. A. Bucaro, and C. M. Davis, “Magnetic field sensitivity of an optical fiber with magnetostrictive jacket,” Applied Optics, vol. 19, no. 22, pp. 3746–3748, 1980.

[27] F. Bucholtz, Fiber optic sensors: an introduction for engineers and scientists, E. Udd Ed. New York: Wiley, 1991.

[28] M. Sedlar and L. Pust, “Preparation of cobalt doped nickel ferrite thin films on optical fibers by dip-coating technique,” Ceramics International, vol. 21, no. 1, pp. 21–27, 1995.

[29] G. Vértesy, A. Gasparics, and Z. Vértesy, “Improving the sensitivity of Fluxset magnetometer by processing of the sensor core,” Journal of Magnetism and Magnetic Materials, vol. 196–197, no. 1, pp. 333–334, 1999.

[30] M. Sedlar, “The preparation and magnetic properties of sodium modified iron oxide thin films by a sol-gel method,” Ceramics Internetional, vol. 20, no. 1, pp. 73–78, 1994.

[31] J. Mora, A. Diez, J. L. Cruz, and M. V. Andrs, “A magnetostrictive sensor interrogated by fiber gratings for DC-current and temperature discrimination,” IEEE Photonics Technology Letters, vol. 12, no. 12, pp. 1680–1682, 2000.

[32] W. Liang, Y. Huang, Y. Xu, R. K. Lee, and A. Yariv, “Highly sensitive fiber Bragg grating refractive index sensors,” Applied Physics Letters, vol. 86, no. 15, pp. 151122, 2005.

[33] J. A. Garcia-Souto and H. Lamela-Rivera, “High resolution (<1nm) interferometric fiber-optic sensor of vibrations in high-power transformers,” Optics Express, vol. 14, no. 21, pp. 9679–9686, 2006.

[34] N. Tiercelin, V. Preobrazhensky, P. Pernod, and A. Ostaschenko, “Enhanced magnetoelectric effect in nanostructured magnetostrictive thin film resonant actuator with field induced spin reorientation transition,” Applied Physics Letters, vol. 92, no. 6, pp. 062904, 2008.

[35] C. Shi, J. Chen, G. Wu, X. Li, J. Zhou, and F. Ou, “Stable dynamic detection scheme for magnetostrictive fiber-optic interferometric sensors,” Optics Express, vol. 14, no. 12, pp. 5098–5102, 2006.

[36] K. Chiang, R. Kancheti, and V. Rastogi, “Temperature-compensated fiber-Bragg-grating-based magnetostrictive sensor for dc and ac currents,” Optical Engineering, vol. 42, no. 7, pp. 1906–1909, 2003.

[37] B. Yi, B. Chu, and K. Chiang, “Temperature compensation for fiber-Bragg-grating-based magnetostrictive sensor,” Microwave and Optical Technology Letters, vol. 36, no. 3, pp. 211–213, 2003.

[38] Y. Liu, K. S. Chiang, and P. L. Chu, “Multiplexing of temperature-compensated fiber-Bragg-grating magnetostrictive sensors with a dual-wavelength pulse laser,” IEEE Photonics Technology Letters, vol. 16, no. 2, pp. 572–574, 2004.

[39] N. Itoh, H. Minemoto, D. Ishiko, and S. Ishizuka, “Optical magnetic field sensor with high linearity using Bi-substituted rare earth iron garnet,” IEEE Transaction Magnetics, vol. 31, no. 6, pp. 3191–3193, 1995.

[40] O. Kamada, T. Nakaya, and S. Higuchi, “Magnetic field optical sensors using Ce: YIG single crystals as a Faraday element,” Sensors and Actuators A: Physical, vol. 119, no. 2, pp. 345–348, 2005.

[41] H. Lin and S. C. Huang, “Fiber-optics multiplexed interferometric current sensors,” Sensors and Actuators A: Physical, vol. 121, no. 2, pp. 333–338, 2005.

[42] T. Liu, X. Chen, D. Yun, J. Zhang, X. Li, and J. Chen, “Tunable magneto-optical wavelength filter of long-period fiber grating with magnetic fluids,” Applied Physics Letters, vol. 91, no. 12, pp. 121116, 2007.

[43] L. Martinez, F. Cecelja, and R. Rakowski, “A novel magneto-optic magnetic fluid material for sensor applications,” Sensors and Actuators A: Physical, vol. 123–124, pp. 438–443, 2005.

[44] A. D. Kersey, M. A. Davis, H. J. Patrick, M. LeBlanc, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, “Fiber grating sensors,” Journal of Lightwave Technology, vol. 15, no. 8, pp. 1442–1463, 1997.

[45] A. Iadicicco, A. Cusano H. Kumazaki, A. Cutolo, R. Bernini, and M. Giordano, “Thinned fiber Bragg gratings as high sensitivity refractive index sensor,” IEEE Photonics Technology Letters, vol. 16, no. 4, pp. 1149–1151, 2004.

[46] S. Y. Yang, Y. F. Chen, H. E. Horng, C. Y. Hong, W. S. Tse, and H. C. Yang, “Magnetically-modulated refractive index of magnetic fluid films,” Applied Physics Letters, vol. 81, no. 26, pp. 4931–4933, 2002.

[47] H. E. Horng, C. Y. Hong, S. Y. Yang, and H. C. Yang, “Designing the refractive indices by using maganetic fluids,” Applide Physics Letters, vol. 15, no. 15, pp. 2434–2436, 2003.

[48] C. Y. Hong, S. Y. Yang, H. E. Horng, and H. C. Yang, “Control parameters for the tunable refractive index of magnetic fluid films,” Joural Applied Physics, vol. 94, no. 6, pp. 3849–3852, 2003.

[49] Y. Laiqiong, Z. Luji, and Y. Jixiao, “Study of preparation and properties on magnetization and stability for ferromagnetic fluids,” Materials Chemistry and Physics, vol. 66, no. 1, pp. 6–9, 2000.

[50] J. Huang, R. Zhao, H. Wang, W. Zhao, and L. Ding, “Immobilization of glucose oxidase on Fe3O4/SiO2 magnetic nanoparticles,” Biotechnol Letters, vol. 32, no. 6, pp. 817–821, 2010.

[51] S. S. Orlow, A. Yariv, and S. V. Essen, “Coupled-mode analysis of fiber-optic add-drop filters for dense wavelength-division multiplexing,” Optics letters, vol. 22, no. 10, pp. 688–690, 1991.

[52] A. J. Mailfert and B. Nahounou, “Dielectric behavior of a magnetic fluid subjected to a uniform magnetic field,” IEEE Transactions on Magnetics, vol. 16, no. 2, pp. 254–257, 1980.