Laser beam shaping using a single-mode fiber abrupt taper

被引：31

作者：

Tian, Zhaobing ^{[1
]}

Nix, Michael ^{[2
]}

Yam, Scott S-H ^{[2
]}

机构：

[1] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada

[2] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada

来源：

OPTICS LETTERS | 2009年 / 34卷 / 03期

关键词：

WAVE-GUIDES; INTERFEROMETER;

D O I：

10.1364/OL.34.000229

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new beam-shaping device was realized by an abrupt taper with a length of similar to 700 mu m and a waist of similar to 40 mu m. The insertion loss of the device is less than 3%. The diameter of he flat beam top can be up to similar to 900 mu m with a small intensity variation (4%) and a small half-divergence angle (2.5 degrees). The conversion efficiency of the new device from a Gaussian-shaped to a flat-top profile is comparable with that of a long-period-gratings-based device, while keeping the fabrication cost low. The new device requires only a fusion splicer and standard SMF-28 fiber, eliminating the need for photolithographic procedures. The new device also has no obvious incident light polarization dependence. (C) 2009 Optical Society of America

引用

页码：229 / 231

页数：3

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