Research on radiation damage of fiber optical fiber ring for fiber optic gyroscope

With the development of space technology, more and more Fiber optic gyroscope is used in spacecraft and satellite. Due to the existence of space radiation environment, it will cause serious damage to some components in the Fiber optic gyroscope, especially the fiber ring, and have an important impact on the optical power transmission of the fiber ring. In recent years, the research shows that space irradiation has serious damage to optical elements. In this paper, for a 1550 nm Panda optical fiber, the influence of the radiation damage of this kind of optical fiber is obtained by gamma ray and electron source irradiation respectively. The transmission loss of the fiber is up to 17.5 dB/km after 1Mrad (Si) is irradiated by gamma ray, and 53.2 dB/km after 5×1015/cm2 electrons is irradiated by 0.2MeV electron source. Compared with the previous 1310 nm optical fiber irradiation damage, and through the analysis of the mechanism of optical fiber irradiation damage, it is concluded that the impact of 1550 nm optical fiber irradiation damage is greater than that of 1310 nm optical fiber irradiation damage. In addition, for the degradation of 1550 nm optical fiber, the influence of fiber radiation damage on the bias drift and random walk of the whole fiber optic gyroscope system is analyzed. Finally, based on the radiation damage mechanism of optical fiber and the experimental results of radiation damage of optical fiber, some suggestions on the radiation resistance design of optical fiber ring are given.

[1]  L. Hai,et al.  Effects of 160 keV electron irradiation on the optical properties and microstructure of "Panda" type Polarization-Maintaining optical fibers , 2012 .

[2]  K. Seol,et al.  Structural changes induced by KrF excimer laser photons in H2-loaded Ge-doped SiO2 glass , 1999 .

[3]  Temperature sensor based on a single-mode tapered optical fiber , 2011 .

[4]  Minoru Tomozawa,et al.  An infrared spectroscopic study of water-related species in silica glasses , 1996 .

[5]  Lou Shuqin,et al.  Loss characteristic of hollow core photonic bandgap fiber , 2019 .

[6]  David L. Griscom,et al.  Trapped-electron centers in pure and doped glassy silica: A review and synthesis , 2011 .

[7]  Yanhua Zhang,et al.  Proton irradiation damage mechanism of PANDA-type polarization-maintaining optical fibers. , 2012, Applied optics.

[8]  David L. Griscom,et al.  Fractal kinetics of radiation-induced point-defect formation and decay in amorphous insulators: Application to color centers in silica-based optical fibers , 2001 .

[9]  Investigation of bending and temperature effects in optical fibers , 2013 .

[10]  A. L. Tomashuk,et al.  Radiation-induced absorption and luminescence in specially hardened large-core silica optical fibers , 1999, 1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471).

[11]  Shanghong Zhao,et al.  Gamma-ray-radiation-induced damage to silicon single-mode fiber , 2010 .

[12]  A. L. Tomashuk,et al.  Reduction of the radiation-induced absorption in hydrogenated pure silica core fibres irradiated in situ with γ-rays , 2007 .

[13]  D. L. Griscom,et al.  Radiation hardening of pure‐silica‐core optical fibers by ultra‐high‐dose γ‐ray pre‐irradiation , 1995 .