[1] [1] Han Ping, Xie Yongquan, Liu Yang. Research of all-fiber micro-vibration multiplexing sensors[J]. Chinese J Lasers, 2014, 41(3): 0305004.

[2] [2] Lu Xin, Bi Weihong, Ma Shuo, et al.. Opitcal voltage transducer based on two-hole photonic crystal fiber[J]. Chinese J Lasers, 2011, 38(11): 1105003.

[3] [3] Sun Hao, Hu Manli, Qiao Xueguang, et al.. Fiber refractive index sensor based on fiber core mismatch multimode interference[J]. Chinese J Lasers, 2012, 39(2): 0205001.

[4] [4] Guan Rongfeng, Li Zhantao, Gan Zhiyin, et al.. Analysis on stress and modal field of bow-tie and elliptical cladding polarizationmaintaining optical fiber[J]. Chinese Journal of Quantum Electronics, 2005, 22(2): 277-281.

[5] [5] P Chu, R Sammut. Analytical method for calculation of stresses and material birefringence in polarization-maintaining optical fiber [J]. J Lightwave Technol, 1984, 2(5): 650-662.

[6] [6] K H Tsai, K S Kim, T F Morse. General solutions for stress-induced polarization in optical fibers[J]. J Lightwave Technol, 1991, 9(1): 7-17.

[7] [7] Yu Pan, Ji Minning. Stress element analysis method of the birefringence in stress- induced fiber[J]. Laser & Optoelectronics Progress, 2014, 52(2): 020604.

[8] [8] Xu Zhilun. The Introductory Tutorial of Elastic Mechanics[M]. Beijing: People Education Press, 1980. 6-8.

[9] [9] R Guan, F Zhu, Z Gan, et al.. Stress birefringence analysis of polarization maintaining optical fibers[J]. Optical Fiber Technology, 2005, 11(3): 240-254.

[10] [10] M H Aly, M S A Abouelwafa, M M Keshk. Thermal-stress-induced birefringence in panda and bow-tie optical fibers[C]. Cairo: Proceedings of the Fifteenth National Radio Science Conference, 1998. D14/1-D1411.