[1] NODA J, OKAMOTO K, SASAKI Y. Polarization-maintaining fibers and their applications[J]. Journal of Lightwave Technology, 4, 1071-1089(1986).

[2] LEFÈVRE H C[M]. The fiber-optic gyroscope(2014).

[3] DYOTT R B, COZENS J R, MORRIS D G. Preservation of polarization in optical-fibre waveguides with elliptical cores[J]. Electronics Letters, 15, 380-382(1979).

[4] RAMASWAMY V, STOLEN R H, DIVINO M D et al. Birefringence in elliptically clad borosilicate single-mode fibers[J]. Applied Optics, 18, 4080-4084(1979).

[5] SIMPSON J, STOLEN R, SEARS F et al. A single-polarization fiber[J]. Journal of Lightwave Technology, 1, 370-374(1983).

[6] VARNHAM M P, PAYNE D N, BIRCH R D et al. Single-polarization operation of highly birefringent bow-tie optical fibers[J]. Electronics Letters, 19, 246-247(1983).

[7] SASAKI Y, HOSAKA T, NODA J. Low-loss polarization-maintaining optical fiber with low crosstalk[J]. Electronics Letters, 21, 156-157(1985).

[8] SCHERER G W. Stress-induced index profile distortion in optical-waveguides[J]. Applied Optics, 19, 2000-2006(1980).

[9] BARLOW A J, PAYNE D N. The stress-optic effect in optical fibers[J]. IEEE Journal of Quantum Electronics, 19, 834-839(1983).

[10] GUAN Rongfeng, ZHU Rongfeng, GAN Zhiyin et al. Stress birefringence analysis of polarization maintaining optical fibers[J]. Optical Fiber Technology, 11, 240-254(2005).

[11] CORSI A, CHANG J H, WANG R H et al. Highly elliptical core fiber with stress-induced birefringence for mode multiplexing[J]. Optics Letters, 45, 2822-2825(2020).

[12] KIIVERI P, KOPONEN J, HARRA J et al. Stress-induced refractive index changes in laser fibers and preforms[J]. IEEE Photonics Journal, 11, 1-10(2019).

[13] OURMAZD A, VARNHAM M P, BIRCH R D et al. Thermal-properties of highly birefringent optical fibers and preforms[J]. Applied Optics, 22, 2374-2379(1983).

[14] JUST F, SPITTEL R, BIERLICH J et al. The influence of the fiber drawing process on intrinsic stress and the resulting birefringence optimization of PM fibers[J]. Optical Materials, 42, 345-350(2015).

[15] PAEK U C, KURKJIAN C R. Calculation of cooling rate and induced stresses in drawing of optical fibers[J]. Journal of the American Ceramic Society, 58, 330-335(1975).

[16] ZHENG Qiuju, MAURO J C. Viscosity of glass-forming systems[J]. Journal of the American Ceramic Society, 100, 6-25(2017).

[17] BACHMANN P K, HERMANN W, WEHR H et al. Stress in optical waveguides. 2: Fibers[J]. Applied Optics, 26, 1175-1182(1987).

[18] RONGVED L, KURJIAN C R, GEYLING F T. Mechanical tempering of optical fibers[J]. Journal of Non-Crystalline Solids, 42, 579-584(1980).

[19] YAN Haozhe, LI Shangyuan, XIE Zhengyang et al. Design of PANDA ring-core fiber with 10 polarization-maintaining modes[J]. Photonics Research, 5, 1-5(2017).

[20] SONG Jingming, SUN Kang, LI Shuai et al. Phase sensitivity to temperature of the guiding mode in polarization-maintaining photonic crystal fiber[J]. Applied Optics, 54, 7330-7334(2015).

[21] PRIMAK W, POST D. Photoelastic constants of vitreous silica and its elastic coefficient of refractive index[J]. Journal of Applied Physics, 30, 779-788(1959).

[22] JIANG Nuan, LI Zhizhong, YANG Huayong et al. Birefringence analysis of polarization maintaining fiber and research on characteristic of all-fiber beat-length experimental systems[J]. Acta Optica Sinica, 32, 0706003(2012).

[23] LI Jiazhi, CHEN Xuexian, SHEN Liangen. Structural relaxation of glass[J]. Journal of the Chinese Ceramic Society, 3, 88-97(1983).

[24] RASHLEIGH S C, MARRONE M J. Temperature-dependence of stress birefringence in an elliptically clad fiber[J]. Optics Letters, 8, 127-129(1983).

[25] ABE I, DE OLIVEIRA V, KALINOWSKI H J. Measurements of the birefringence temperature dependence in polarization maintaining fibre optics using Bragg gratings[C], 8794, 2097-2104(2013).

[26] LI Jiazhi, LUO Jieyao, CHEN Huimin. Study on the internal friction of Li2O-K2O-Al2O3-SiO2 system glass-ceramics (1) before crystallization[J]. Chinese Science Bulletin, 15, 353-357(1964).