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

被引：51
|
作者：
Ivanov, O. V.
Rego, G.
机构：
[1] Russian Acad Sci, Inst Radio Engn & Elect, Ulyanovsk Branch, Ulyanovsk 432011, Russia
[2] INESC Porto, Unit Optoelect & Syst Elect, P-4169007 Oporto, Portugal
[3] Inst Polytech Viana Castelo, Escola Sup Tecnol Gestao, P-4901908 Viana do Castelo, Portugal
来源：
OPTICS EXPRESS | 2007年 / 15卷 / 21期
关键词：
D O I：
10.1364/OE.15.013936
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 arc-induced long-period gratings that couple the core mode into the antisymmetric cladding modes. We demonstrate that this perturbation is caused by the temperature gradient in the fiber, which is induced, in turn, by the temperature gradient in the arc discharge. The reproducibility of the process of the grating inscription is higher when the fiber is placed in a region with larger temperature gradient. (c) 2007 Optical Society of America.
引用
收藏
页码：13936 / 13941
页数：6
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