掺锗单模光纤布拉格光栅γ辐照损伤实验
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摘要
为开发光纤布拉格光栅在空间环境温度及应变的测量的应用,有必要对其在空间辐射环境下的性能变化规律进行研究。基于色心模型,从理论上分析了电离辐射对光纤布拉格光栅传输性能的影响。采用~(60)Co-γ辐射源对两根布拉格中心波长分别为825 nm和835 nm的掺锗单模光纤布拉格光栅进行了总剂量为1.01×10~6rad的电离辐射实验。实验结果表明,随着辐照剂量的增加,光纤布拉格光栅反射谱的峰值波长发生了红移现象,光栅的折射率增加。经过总剂量1.01×10~6rad辐照后,布拉格中心波长825 nm和835 nm的峰值波长分别增加了0.070 62 nm和0.074 15 nm。实验结果与色心模型推导出的光栅有效折射率与辐射剂量的函数关系式相符合;为光纤布拉格光栅在空间环境温度及应变测量的运用提供数据基础。
In order to develop the application of fiber Bragg grating in the measurement of temperature and strain in space environment,it is necessary to study the performance of fiber Bragg grating in space radiation environment. Based on the color center model,the influence of ionizing radiation on the transmission performance of fiber Bragg grating is analyzed theoretically. A~(60) Co-γ radiation source was used to study the ionization radiation experiment with a total dose of 1. 01 × 10~6 rad for two Ge-doped single-mode fiber Bragg gratings with center wavelengths of 825 nm and 835 nm. The experimental results show that with the increase of irradiation dose,the peak wavelength of fiber Bragg grating reflector redshift phenomenon,the grating refractive index increases. After the total dose of 1. 01 × 10~6 rad irradiation,the peak wavelengths of the Bragg center wavelengths of 825 nm and 835 nm were increased by 0. 070 62 nm and 0. 074 15 nm,respectively. The experimental results are in agreement with the relationship between the effective refractive index of the grating and the radiation dose. The experimental results provide a data basis for the application of fiber Bragg gratings in space ambient temperature and strain measurement.
In order to develop the application of fiber Bragg grating in the measurement of temperature and strain in space environment,it is necessary to study the performance of fiber Bragg grating in space radiation environment. Based on the color center model,the influence of ionizing radiation on the transmission performance of fiber Bragg grating is analyzed theoretically. A~(60) Co-γ radiation source was used to study the ionization radiation experiment with a total dose of 1. 01 × 10~6 rad for two Ge-doped single-mode fiber Bragg gratings with center wavelengths of 825 nm and 835 nm. The experimental results show that with the increase of irradiation dose,the peak wavelength of fiber Bragg grating reflector redshift phenomenon,the grating refractive index increases. After the total dose of 1. 01 × 10~6 rad irradiation,the peak wavelengths of the Bragg center wavelengths of 825 nm and 835 nm were increased by 0. 070 62 nm and 0. 074 15 nm,respectively. The experimental results are in agreement with the relationship between the effective refractive index of the grating and the radiation dose. The experimental results provide a data basis for the application of fiber Bragg gratings in space ambient temperature and strain measurement.
引文
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3刘德明.光纤光学.北京:科学出版社,2008Liu Deming.Optics fiber of the light.Beijing:Science Press,2008
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6刘鹏.掺Bi石英光纤的γ射线辐照和温度影响特性.物理学报,2012;61(6):204-209Liu Peng.γ-rradiation and temperature influence on the Bi-doped silica fiber,2012;61(6):204-209
7韩艳玲,肖文,伊小素,等.辐照光纤的主动恢复效应.红外与激光工程,2008;37(1):128-131Han Yanling,Xian Wen,Yi Xiaosu,et al.Active recovery effect of irradiation optical fiber.Infrared and Laser Engineering,2008;37(1):128-131
8马晶,车驰.光纤布拉格光栅γ辐射损伤及其对光谱特性的影响.物理学报,2012;61(6):204-209Ma Jing,Che Chi.γ-radiation damage of fiber Bragg grating and its effects on reflected spectrum characteristics.Acta Physica Sinica,2012;61(6):204-209
9车驰.空间电离辐射对光纤布喇格光栅性能影响研究.哈尔滨:哈尔滨工业大学,2008Che Chi.The research of the impact of space ionizing radiation on the performance of fiber Bragg grating.Harbin:Harbin Institute of Technology,2008
2 Gusarov A I,Doyle D B.Modeling of gamma-radiation impact on transmission characteristics of optical glasses.Photonics for Space and Radiation Environments II,2002;4547(354):4262-4266
3刘德明.光纤光学.北京:科学出版社,2008Liu Deming.Optics fiber of the light.Beijing:Science Press,2008
4方书淦,张启仁.晶体色心物理学.上海:上海交通大学出版社,1989:26-27Fang Shugan,Zhang Qiren.Physics of color center in crystal.Shanghai:Shanghai Jiaotong University Press,1989:26-27
5黄昆.固体物理学.北京:高等教育出版社,1966Huang Kun.Solid state physics.Beijing:Higher Education Press,1966
6刘鹏.掺Bi石英光纤的γ射线辐照和温度影响特性.物理学报,2012;61(6):204-209Liu Peng.γ-rradiation and temperature influence on the Bi-doped silica fiber,2012;61(6):204-209
7韩艳玲,肖文,伊小素,等.辐照光纤的主动恢复效应.红外与激光工程,2008;37(1):128-131Han Yanling,Xian Wen,Yi Xiaosu,et al.Active recovery effect of irradiation optical fiber.Infrared and Laser Engineering,2008;37(1):128-131
8马晶,车驰.光纤布拉格光栅γ辐射损伤及其对光谱特性的影响.物理学报,2012;61(6):204-209Ma Jing,Che Chi.γ-radiation damage of fiber Bragg grating and its effects on reflected spectrum characteristics.Acta Physica Sinica,2012;61(6):204-209
9车驰.空间电离辐射对光纤布喇格光栅性能影响研究.哈尔滨:哈尔滨工业大学,2008Che Chi.The research of the impact of space ionizing radiation on the performance of fiber Bragg grating.Harbin:Harbin Institute of Technology,2008