[1] [1] Wang Junmei, Wu Chunfeng, Wang Xiaoqi et al.. The developing and present application manner of the instrument transformers for power system in our Country［J］. Electrical Equipment, 2007, 8(1): 5～10

[2] [2] Shi Degang, Liu Ye, Zhang Liping et al.. Overview of high voltage potenrial transformer［J］. Transformer, 2003, 40(6): 11～14

[3] [3] Luo Chengmu, Zhang Guixin, Wang Peng et al.. Electronic type instrument transformer and its present technical development manner［J］. Electrical Equipment, 2007, 8(1): 20～24

[4] [4] C. E. Covington, J. Blake. Two-mode fiber-optic bending sensor with temperature and strain compesation［J］. Opt. Lett., 1994, 19(9): 676～678

[5] [5] J. N. Blake, B. Y. Kim, H. E. Engan. Analysis of intermodal coupling in a two-mode fiber with periodic microbends［J］. Opt. Lett., 1987, 12(4): 281～283

[6] [6] Helin Wang, Weihong Bi, Aijun Yang et al.. Application of two-mode fiber in voltage sensor［J］. Chin. Opt. Lett., 2006, 4(11): 631～632

[7] [7] Helin Wang, Aijun Yang. Central distance of interferential mode patterns of elliptical core two-mode fiber［J］. Chin. Opt. Lett., 2008, 6(9): 640～643

[8] [8] Sachin N. Dekate, Barry Grossman. Rotationally insensitive circular-core two-mode fiber-optic strain sensor［J］. Appl. Opt., 2010, 49(11): 2183～2189

[9] [9] Ahmad Safaai-Jazi, John C. Mckeeman. Synthesis of intensity patterns in few-mode optical fibers［J］. J. Lightwave Technol., 1991, 9(9): 1047～1052

[10] [10] Liu Feng, Bi Weihong, Guo Xuan. Optical voltage transducer based on modular interference in highly elliptical-core polarization-maintaining fiber［J］. Acta Optica Sinica, 2008, 29(1): 219～223

[11] [11] Tinko A. Eftimov, Wojtek J.Bock. Polarization analysis of LP01 and LP11 intermodal interference in highly birefringent bow-tie optical fibers［J］. J. Lightwave Technol., 1993, 11(12): 1925～1936

[12] [12] Li Changsheng, Cui Xiang, Li Baoshu et al.. A review of optical potential transducers［J］. High Voltage Enginerring, 2000, 26(2): 40～43

[13] [13] R. Kotynski, K. Panajotov, M. Antkowiak et al.. Interplay of form and material birefringence in photonic crystal fibers: application for sensing［C］. Proceeds of the 3rd European Symposium on Photonic Crystals, 2004. 95～98

[14] [14] Marcin Szpulak, Tadeusz Martynkien, Waclaw Urbanczyk. Effects of hydrostatic pressure on phase and group modal birefringence in microstructured holey fibers［J］. Appl. Opt., 2004, 43(24): 4739～4744

[15] [15] Gabriela Statkiewicz, Tadeusz Martynkien, Waclaw Urbanczyk. Measurements of modal birefringence and polarimetric sensitivity of the birefringent holey fiber to hydrostatic pressure and strain［J］. Opt. Commun., 2004, 241(4-6): 339～348

[16] [16] Jian Ju, Zhi Wang, M. S. Demokan. Temperature sensitivity of a two-mode photonic crystal fiber interferometric sensor［J］. IEEE Photon. Technol. Lett., 2006, 18(20): 2168～2171

[17] [17] B. Y. Kim, J. N. Blake, S. Y.Huang et al.. Use of highly elliptical core fibers for two-mode fiber devices［J］. Opt. Lett., 1987, 12(9): 729～731

[18] [18] Liu Feng, Wang Haiming, Guo Xuan et al.. Simulation of voltage transducer using interference between modes［J］. High Voltage Engineering, 2007, 33(6): 89～92