Influence of gamma-ray radiation on electromagnetic field distribution of optical fiber waveguide

Liu Fuhua; Wang Ping; Chen Shaowu; Liu Weiping; Xie Honggang; Wang Zhenbao

doi:10.3788/HPLPB20132507.1788

Volume 25 Issue 07

May 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(07): 1788-1792

Lu Bin, Cui Bohua. Analysis and design of terahertz waveguide filter[J]. High Power Laser and Particle Beams, 2013, 25: 1527-1529. doi: 10.3788/HPLPB20132506.1527

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Liu Fuhua, Wang Ping, Chen Shaowu, et al. Influence of gamma-ray radiation on electromagnetic field distribution of optical fiber waveguide[J]. High Power Laser and Particle Beams, 2013, 25: 1788-1792. doi: 10.3788/HPLPB20132507.1788

Lu Bin, Cui Bohua. Analysis and design of terahertz waveguide filter[J]. High Power Laser and Particle Beams, 2013, 25: 1527-1529. doi: 10.3788/HPLPB20132506.1527

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Influence of gamma-ray radiation on electromagnetic field distribution of optical fiber waveguide

doi: 10.3788/HPLPB20132507.1788

1.
School of Technical Physics,Xidian University,Xi’an 710071,China;
2.
State Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,Xi’an 710024,China

Received Date: 2013-02-01
Rev Recd Date: 2013-04-01
Publish Date: 2013-05-02

Abstract

Abstract

The electric field of the transmission mode in an optical fiber waveguide is analyzed theoretically. The discipline describing the influence of optical fiber refractive index changes on waveguide electromagnetic field distribution is obtained. A real time experimental measurement system of refractive index changes has been built by using bulk fused silica material and fiber Bragg grating under 60Co -ray radiation. The refractive index changes of two candidates with given radiation doses and mode field of fiber are measured in the experiments respectively. The results show that the refractive index of the optical fiber increases with the radiation dose; the refractive index changes cause the variations of the field intensity distribution in the transmission mode, which results in radiation-induced waveguide losses; within a certain dose range of 0-2000 Gy, the optical fiber meets the weakly guiding boundary conditions and maintains the confining ability on the transmission mode.
- gamma-ray radiation,
- optical fiber waveguide,
- refractive index,
- distribution of mode field,
- radiation-induced waveguide loss

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