Origin of coupling to antisymmetric cladding modes in arc-induced long-period fiber gratings

被引：0
|
作者：
Ivanov, I. V. [1 ]
Caldas, P. [1 ,2 ]
Rego, G. [1 ,2 ]
机构：
[1] INESC Porto, Unidade Optoelect & Sist Elect, Rua Campo Alegre 687, P-4169007 Oporto, Portugal
[2] Escola Super Tecnol & Gestao, Inst Politecn Viana de Castelo, P-4901908 Viana Do Castelo, Portugal
来源：
THIRD EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS | 2007年 / 6619卷
关键词：
long-period fiber grating; electric arc discharge; microbend grating;
D O I：
10.1117/12.738367
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the origin of antisymmetric perturbation of the fiber in are-induced long-period gratings that couple the core mode into the antisymmetric cladding modes. We demonstrate that this perturbation is caused by a temperature gradient in the fiber, which is induced, in turn, by a temperature gradient in the arc discharge.
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页数：4
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