基于气相沉积法的掺铒光纤制备与温度特性

武洋; 潘蓉; 杨鹏; 衣永青

doi:doi:10.7510/jgjs.issn.1001-3806.2023.06.016

激光技术, 2023, 47 (6): 841, 网络出版: 2023-12-05

基于气相沉积法的掺铒光纤制备与温度特性

Fabrication and temperature characteristics of erbium-doped fiber based on chemical vapor deposition

论文大纲

武洋潘蓉杨鹏衣永青

作者单位

中国电子科技集团公司第四十六研究所，天津 300220

光纤光学掺铒光纤气相沉积温度特性平均波长 fiber optics erbium-doped fiber chemical vapor deposition temperature characteristics mean wavelength

摘要

为了研制温度稳定性满足中高精度光纤陀螺仪中超荧光光源使用要求的掺铒光纤，采用螯合物气相沉积法制备了Al-Er共掺和Al-Ge-Er共掺两种掺铒光纤。同时对两种光纤的吸收系数和本底损耗进行了测试研究，并搭建超荧光光源测试平台，对Al-Ge-Er共掺光纤的温度稳定性进行了实验验证。结果表明，在制备光纤时通入等量的铒的螯合物，Al-Er共掺光纤具有更高的吸收系数，但本底损耗较高; 两种光纤在1530 nm的吸收系数分别为35.6 dB/m和20.0 dB/m，在1200 nm的本底损耗为31.7 dB/km和6.3 dB/km; 在-45.0 ℃~70.0 ℃变温范围内，Al-Ge-Er共掺光纤的自发辐射光谱在中心波长为1560.84 nm，10.51 nm带宽的平均波长变化约为6.52×10-7 nm/℃，该光纤可满足高精度光纤陀螺的超荧光光源使用要求。该研究为掺铒光纤的研制提供了参考。

Abstract

In order to develop erbium-doped fibers with temperature stability to achieve the requirements of super-fluorescent light sources for medium and high precision fiber optic gyroscopes, two types of erbium-doped fibers, Al-Er co-doped and Al-Ge-Er co-doped were prepared by a chelate vapour deposition method. The absorption coefficients and background losses of the two fibers were measured, and the temperature stability of the Al-Ge-Er co-doped fibers was verified experimentally by building a test platform for the super fluorescent light source. The study shows that the Al-Er co-doped fibers have higher absorption coefficients but worse background losses when they are fabricated with an equal volume of erbium chelate. The absorption coefficients of the two fibers are 35.6 dB/m and 20.0 dB/m at 1530 nm, and the background losses are 31.7 dB/km and 6.3 dB/km at 1200 nm. In the temperature range of -45.0 ℃~ 70.0 ℃, the spontaneous emission spectrum mean wavelength variation of the Al-Ge-Er co-doped fiber fabricated by chelate vapor deposition method is about 6.52×10-7 nm/℃ at the central wavelength of 1560.84 nm with the bandwidth of 10.51 nm. This fiber can achieve the requirements of a super-fluorescent light source for high precision fiber optic gyroscope. And this study provides a reference for the development of erbium-doped optical fibers.

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武洋, 潘蓉, 杨鹏, 衣永青. 基于气相沉积法的掺铒光纤制备与温度特性[J]. 激光技术, 2023, 47(6): 841. WU Yang, PAN Rong, YANG Peng, YI Yongqing. Fabrication and temperature characteristics of erbium-doped fiber based on chemical vapor deposition[J]. Laser Technology, 2023, 47(6): 841.

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