Bandwidth-tunable band-rejection filter based on helicoidal fiber grating pair of opposite helicities

被引：57

作者：

Shin, Woojin

Yu, Bong-Ahn

Noh, Young-Chul

Lee, Jongmin

Ko, Do-Kyeong

Oh, Kyunghwan

机构：

[1] Gwangju Inst Sci & Technol, Adv Photon Res Inst, Kwangju 500712, South Korea

[2] Yonsei Univ, Dept Phys, Seoul 120749, South Korea

来源：

OPTICS LETTERS | 2007年 / 32卷 / 10期

关键词：

D O I：

10.1364/OL.32.001214

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have developed a new type of all-fiber band-rejection filter consisting of a helicoidal long-period fiber grating pair of opposite helicities, which provides highly flexible spectral control over the rejection bandwidth. The detailed fabrication method and operation principles of the proposed bandwidth-tunable band-rejection filter are described. The proposed device enables unique rejection bandwidth tuning over more than 14 nm at the rejection level of 15 dB, with low insertion loss and polarization-dependent loss achieved by adjusting torsion stress. (c) 2007 Optical Society of America.

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收藏

页码：1214 / 1216

页数：3

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