辐照对Bi/Er/La共掺有源光纤磁光特性的影响

doi:10.3969/j.issn.0255-8297.2022.02.003

Abstract

Abstract: To improve the weak magneto-optical properties of standard single-mode fibers, in this paper, we fabricated a Bi/Er/La co-doped active silica fiber by using modified chemical vapor deposition (MCVD) method in combination with atomic layer deposition (ALD) technology. Furthermore, we processed the fiber with gamma-ray irradiation. A Verdet constant measurement system for fibers was built to study the magneto-optical properties of Bi/Er/La co-doped active silica fiber before and after irradiation. Experimental results show that the Verdet constant of Bi/Er/La co-doped active silica fiber is 1.02 rad/(T · m)at 1 310 nm, which is 36.2% higher than that of standard single-mode fiber. It is also shown that the processing of gamma-ray irradiation can improve the magneto-optical property of the fiber, and the Verdet constant of Bi/Er/La co-doped active silica fiber increases with the increase of irradiation dose. Especially under the irradiation dose of 3.0 kGy, the Verdet constant increases by 54.90%, whereas that of standard single-mode fibers increases only by 26.3% and gets saturation at the irradiation dose of 1.0 kGy.

Key words: Bi/Er/La co-doped active silica fiber, magneto-optical property, Verdet constant, irradiation

CLC Number:

O436.4

YE Le, WEN Jianxiang, ZENG Jiawei, DONG Yanhua, WANG Tingyun. Influence of Irradiation on Magneto-Optical Properties of Bi/Er/La Co-doped Active Silica Fiber[J]. Journal of Applied Sciences, 2022, 40(2): 204-211.

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Influence of Irradiation on Magneto-Optical Properties of Bi/Er/La Co-doped Active Silica Fiber

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