Fabrication and Characterization of a Broadband Long-Period Grating on a Hollow Optical Fiber with Femtosecond Laser Pulses

被引：4

作者：

Ha, Woosung ^{[1
]}

Oh, Kyunghwan ^{[1
]}

Jung, Yongmin ^{[2
]}

Kim, Jun Ki

Shin, Woojin ^{[3
]}

Sohn, Ik-Bu ^{[3
]}

Ko, Do-Kyeong ^{[3
]}

Lee, Jongmin ^{[3
]}

机构：

[1] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea

[2] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

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

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2008年 / 53卷 / 06期

关键词：

Long-period grating; Hollow optical fiber; Band rejection filter; Femtosecond laser;

D O I：

10.3938/jkps.53.3814

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have fabricated broadband long-period gratings (LPGs) on hollow optical fibers (HOFs) by 15 corrugating slots with various widths by point-by-point exposure of a Ti:sapphire femotosecond laser. The corrugated LPGs showed unique broadband rejection whose FWHM extended to 190 nm with a low insertion loss of less than 1 dB. The maximum coupling strength was 8.5 dB, which is a significant improvement in comparison with previous HOF acousto-optic tunable filters (AOTFs). The center wavelength and coupling strength of the resonant peak could be systematically controlled by modulating the width of the corrugation.

引用

页码：3814 / 3817

页数：4

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