[1] [1] G. J. Veldhuis,P. V. Lambeck. Highly-sensitive passive integrated optical spiral-shaped waveguide refractometer[J]. Appl. Phys. Lett.,1997,71(20):2895-2897

[2] [2] G. J. Veldhuis,L. E. W. van der Veen,P. V. Lambeck. Integrated optical refractometer based on waveguide bend loss[J]. J. Lightwave Technol.,1999,17(5):857-864

[3] [3] Zeng Jie,Liang Dakai,Zeng Zhenwu et al.. Reflective optical fiber surface plasma wave resonance sensor [J] . Acta Optica Sinica,2007,27(3):404-409

[4] [4] Lü Qiang,Huang Dexiu,Yuan Xiuhua et al.. Sensitivity of surface plasma resonance sensor for different wavelengths [J] . Chinese J . Lasers,2007,34(7):972-976

[5] [5] Liu Weijun,Rao Yunjiang,Ran Zengling et al.. Novel Fabry-Pérot fiber-ptic refractive-index sensor based on laser micromachining[J]. Acta Optica Sinica,2008,28(7):1400-1404

[6] [6] Wei Renxuan,Jiang Desheng. Refractive index measurement with Fabry-Perot interference wavelength[J]. Chinese J. Lasers,2003,30(6):551-554

[7] [7] Miao Yinping,Liu Bo,Zhao Qida. Refractive index sensing characteristic of tilted fiber Bragg gratings with different cladding-diameters[J] . Acta Optica Sinica,2008,28(11):2072-2076

[8] [8] O. Frazo,T. Martynkien,J.M. Baptista et al.. Optical refractometer based on a birefringent Bragg grating written in an H-shaped fiber[J]. Opt. Lett.,2009,34(1):76-78

[9] [9] Yun Binfeng,Chen Na,Cui Yiping. Refractive index sensing characteristics of fiber Bragg grating based on cladding mode[J] . Acta Optica Sinica,2006,26(7):1013-1015

[10] [10] V. P. Minkovich,J. Villatoro,D. Monzón-Hernández et al.. Holey fiber tapers with resonance transmission for high-resolution refractive index sensing[J] . Opt. Express,2005,13(19):7609-7614

[11] [11] P. Nath,H. K. Singh,P. Datta et al.. All-fiber optic sensor for measurement of liquid refractive index[J]. Sens. Actucator A,2008,148(1):16-18