[1] [1] Chow W W, Gea-Banaciloche J, Pedrotti L M. The ring laser gyro[J]. Rev Mod Phys, 1985, 57: 61-103.

[2] [2] Yu Xiujuan, Liao Yanbiao, Zhang Min, et al. Kerr effect in an optical passive ring-resonator gyro using a hollow-core photonic band-gap fiber[J]. Chinese J Lasers, 2008, 35(3): 430-435.

[3] [3] Iwatsuki K, Hotate K, Higashiguchi M. Eigenstate of polarization in a fiber ring resonator and its effect in an optical passive ring-resonator gyro[J]. Appl Opt, 1986, 25(15): 2606-2612.

[4] [4] Ma H, Chen Z, Yang Z, et al. Polarization-induced noise in resonator fiber optic gyro[J]. Appl Opt, 2012, 51(28): 6708-6717.

[5] [5] Iwatsuki K, Hotate K, Higashiguchi M. Kerr effect in an optical passive ring-resonator gyro[J]. J Lightwave Technol, 1986, 4(6): 645-651.

[6] [6] Iwatsu ki K, Hotate K, Higashiguchi M. Effect of Rayleigh backscattering in an optical passive ring-resonator gyro[J]. Appl Opt, 1984, 23(21): 3916-3924.

[7] [7] Ma H L, Chen Z, Jin Z H. Single-polarization coupler based on air-core photonic bandgap fibers and implications for resonant fiber optic gyro[J]. J Lightwave Technol, 2014, 32(1): 46-54.

[8] [8] Takiguchi K, Hotate K. Evaluation of the output error in an optical passive ring-resonator gyro with a 90° polarization-axis rotation in the polarization-maintaining fiber resonator[J]. IEEE Photon Technol Lett, 1991, 3(1): 88-89.

[9] [9] Wang X, He Z, Hotate K. Reduction of polarization fluctuation induced drift in resonator fiber optic gyro by a resonator with twin 90° polarization axis rotated splices[J]. Opt Express, 2010, 18(2): 1677-1683.

[10] [10] Ma H L, Yu X H, Jin Z H. Reduction of polarization-fluctuation induced drift in resonator fiber optic gyro by a resonator integrating in-line polarizer[J]. Opt Lett, 2012, 37(16): 3342-3344.

[11] [11] Yan Y C, Ma H L, Jin Z H. Reducing polarization-fluctuation induced drift in resonant fiber optic gyro by using single-polarization fiber[J]. Opt Express, 2015, 23(3): 2002-2009.

[12] [12] Song Jingming, Sun Kang, Xu Xiaobin. Scattering loss analysis and structure optimization of hollow-core photonic bandgap fibers[J]. Chinese J Lasers, 2015, 42(11): 1105003.

[13] [13] Huang Chongde, Chen Dijun, Cai Haiwen, et al. Laser frequency stabilization technology based on hollow-core photonics crystal fiber gas cell[J]. Chinese J Lasers, 2014, 41(8): 0802006.

[14] [14] Kim H K, Digonnet M J F, Kino G S. Air-core photonic bandgap fiber-optic gyroscope[J]. J Lightwave Technol, 2006, 24(8): 3169-3174.

[15] [15] Sanders G A, Strandjord L K, Qiu Tiequn. Hollow core fiber optic ring resonator for rotation sensing[C]. Optical Fiber Sensors, 2006, ME: ME6.

[16] [16] Terrel M A, Michel Digonnet J F, Fan S H. Resonant fiber optic gyroscope using an air-core fiber[J]. J Lightwave Technol, 2012, 30(7): 931-937.

[17] [17] Feng Lishuang, Deng Xuewen, Ren Xiaoyuan, et al. Researcher on hollow core photonic bandgap fiber ring resonator based on micro-optics structure[J]. Acta Optica Sinica, 2012, 32(8): 0806002.

[18] [18] Li Xuyou, Xu Zhenlong, Yang Hanrui, et al. Analysis of thermal properties in a polarization-maintaining air-core photonic bandgap fiber[J]. Chinese J Lasers, 2016, 43(4): 0405003.

[19] [19] Rahman B M A, Kejalakshmy N, Agrawal A, et al. Characterizations of photonic crystal fibers by using a full-vectorial finite element method[C]. The International Society for Optical Engineering, 2006, 6369: 636904.

[20] [20] Li Xuyou, Xu Zhenlong, Liu Pan, et al. Short polarization splitter based on dual-core photonic crystal fiber with ultra-high extinction ratio[J]. Chinese J Lasers, 2015, 42(6): 0605006.

[21] [21] Wang Z, Kai G, Liu Y, et al. Coupling and decoupling of dual-core photonic bandgap fibers[J]. Opt Lett, 2005, 30(19): 2542-2544.

[22] [22] Wang Z, Taru T, Birks T A, et al. Coupling in dual-core photonic bandgap fibers: Theory and experiment[J]. Opt Express, 2007, 15(8): 4795-4083.

[23] [23] Désévédavy F, Renversez G, Troles J, et al. Chalcogenide glass hollow core photonic crystal fibers[J]. Opt Materials, 2010, 32(11): 1532-1539.