Modal coupling in fiber tapers decorated with metallic surface gratings

被引：23

作者：

Ding, W. ^{[1
]}

Andrews, S. R. ^{[1
]}

Birks, T. A. ^{[1
]}

Maier, S. A. ^{[1
]}

机构：

[1] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

来源：

OPTICS LETTERS | 2006年 / 31卷 / 17期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1364/OL.31.002556

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An interference-based scheme for fabricating periodic metal gratings on one side of the uniform waist of optical fiber tapers has been developed. Optical characterization of a 5 mm long, 511 nm period gold grating fiber taper with a 10 mu m diameter reveals backward coupling to both guided and radiation modes that is explained by using an analytical mode-coupling analysis. A refractometer based on this grating taper has a high and constant sensitivity over a large refractive index operating range of 1 to 1.41. (c) 2006 Optical Society of America.

引用

收藏

页码：2556 / 2558

页数：3

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