[1] K. O. Hill, Y. Fujiii, D. C. Johnson et al.. Photosensitivity in optical fiber waveguides: application to reflection filter fabrication［J］. Appl. Phys. Lett., 1978, 32(10): 647～649

[2] A. M. Vengsarkar, J. R. Pedrazzani, J. B. Judkins et al.. Long-period fiber gratings as band-rejection filters［C］. Conf. of Optic Fiber Communications, San Diego, CA, 1995

[3] Y. J. Rao. In-fiber Bragg grating sensors［J］. Meas. Sci. & Technol., 1997, 8(4): 355～357

[4] V. Bhatia, A. M. Vengsarkar. Optical fiber long-period grating sensors［J］. Opt. Lett., 1996, 21(9): 692～694

[5] Li Zhizhong, Yang Huayong, Cheng Yusheng et al.. Pressure sensing characteristics of panda fiber gratings［J］. Acta Optica Sinica, 2009, 29(1): 157～162

[6] Xiong Yanling, Zhao Hong, Zhang Jian et al.. Research on optical current transformer based on the fiber bragg grating［J］. Acta Optica Sinica, 2010, 30(4): 949～953

[7] R. B. Wagreich, W. A. Atia, H.Singh et al.. Effects of diametric load on fiber Bragg gratings fabricated in low birefringent fiber［J］. Electron. Lett., 1996, 32(13): 1223～1224

[8] R. Gofsi, M. A. El-Sherif. Analysis of induced-birefringence effects on fiber Bragg gratings［J］. Optical Fiber Technol., 2000, 6(3): 299～303

[9] Y. Liu, L. Zhang, I. Bennion. Fiber optic load sensors with high transverse strain sensitivity based on long-period gratings in B/Ge co-doped fiber［J］. Electron. Lett., 1999, 35(8): 661～663

[10] Tu Qinchang, Zhang Weigang, Sun Lei et al.. Study on transversal strain on fiber Bragg grating［J ］. Chinese J . Lasers, 2004, 31(12): 1508～1512

[11] Qian Jingren, Liang Ming, Sun Jian. Optical fiber Bragg grating load sensing with high primary resolution［J］. Chinese J. Lasers, 2005, 32(7): 961～964

[12] Wang Yiping. Study on Characteristics of Novel Long-Period Fiber Gratings［D］. Chongqing: Chongqing University, 2003, 128～147

[13] Rao Yunjiang, Wang Yiping, Ran Zengling et al.. Simultaneous measurement of transverse load and temperature using a single longperiod fiber grating element［J］. Chinese J. Lasers, 2003, 30(12): 1117～1120

[14] A. Kuske, G. Robertson. Photoelastic Stress Analysis［M］. Wang Xieshan, Huang Jiefan et al.. Trans.. Shanghai: Shanghai Scientific & Technical Publishers, 1979. 20-37, 426-443

[15] Wu Yonghong, Qu Wenjun, Shao Changjiang et al.. Basic optical-mechanical transformation theoretical equation for FBG strain sensor［J］. Acta Optica Sinica, 2009, 29(8): 2067～2070

[16] Liao Yanbiao. Fiber Optics［M］. Beijing: Tsinghua University Press, 2000. 199～201