Numerical analysis of core-mode to radiation-mode coupling in long-period fiber gratings

被引：56
|
作者：
Koyamada, Y [1 ]
机构：
[1] Ibaraki Univ, Dept Media & Telecommun Engn, Hitachi, Ibaraki 3168511, Japan
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2001年 / 13卷 / 04期
关键词：
fiber grating; radiation mode; cladding mode; mode coupling; radiation loss;
D O I：
10.1109/68.917834
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter presents, to the best of our knowledge, the first analysis of core-mode to radiation-mode coupling in long-period fiber gratings (LPGs) that are surrounded with dielectric material whose refractive index is higher than that of the cladding. We calculated core-mode transmission spectra through LPGs by integrating numerically the coupled-mode equations between the core mode and a continuum of radiation modes. We show calculated core-mode transmission spectra that exhibit such loss band continuums as have already been observed experimentally but not yet theoretically estimated.
引用
收藏
页码：308 / 310
页数：3
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