[1] [1] M. Lehtonen, G. Genty, H. Ludvigsen. Tapered microstructured fibers for efficient coupling to optical waveguides: a numerical study［J］. Appl. Phys. B, 2005, 81(2): 295～300

[2] [2] You Shanhong, Li Xinwan, Yin Zongmin et al.. CWDM passive components fabricated by FBT［J］. Communications Technology, 2002, (12): 3～5

[3] [3] Zhaobing Tian, Scott S.-H. Yam, Jack Barneset et al.. Refractive index sensing with Mach-Zehnder interferometer based on concatenating two single-mode fiber tapers［J］. IEEE Photon. Technol. Lett., 2008, 20(8): 626～628

[4] [4] J. Villatoro, V. P. Minkovich, D. Monzón-Hernández. Temperature-independent strain sensor made from tapered holey optical fiber［J］. Opt. Lett., 2006, 31(3): 305～307

[5] [5] D. Monzón-Hernández, V. P. Minkovich, J. Villatoro. High-temperature sensing with tapers made of microstructured optical fiber［J］. IEEE Photon. Technol. Lett., 2006, 18(3): 511～513

[6] [6] Benye Li, Lan Jiang, Sumei Wang et al.. Ultra-abrupt tapered fiber Mach-Zehnder interferometer sensors［J］. Sensors, 2011, 11(6): 5729～5739

[7] [7] Chen Zhihao, Gu Donghua, Peng Jiangde et al.. Modeling of optical biconical fibers［J］. Acta Optica Sinica, 1999, 19(11): 1549～1555

[8] [8] Zhao Chujun, Fan Dianyuan, Zhou Ping et al.. Power distribution characteristics of tapered fibers［J］. Chinese J. Lasers, 2008, 35(3): 422～425

[9] [9] Xiong Yikun, Huang Xuguang. Optical fiber sensor for liquid refractive index based on fiber optic taper［J］. Acta Optica Sinica, 2009, 29(7): 1956～1960

[10] [10] Liao Yanbiao. Fiber Optics: Principles and Applications［M］. Beijing: Tsinghua University Press, 2010. 41～47

[11] [11] Yan Fengping, Zhang Liangzhong, Shan Ying et al.. Numerical analysis of the mode filed radius for the square law and step index field［J］. Optical Technique, 2000, 26(1): 66～70

[12] [12] J. B. Rosolem, A. A. Juriollo, M. A. Romero. S-band EDFA using standard erbium-doped fiber［J］. Electron. Lett., 2007, 43(22): 1186～1188

[13] [13] Hirotaka Ono, Makoto Yamada, Makoto Shimizu. S-band erbium-doped fiber amplifiers with a multistage configuration: design, characterization, and gain tilt compensation［J］. J. Lightwave Technol., 2003, 21(10): 2240～2246