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
收藏
页码：3814 / 3817
页数：4
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