Investigation on Periodically Surface-Corrugated Long-Period Gratings Inscribed on Photonic Crystal Fibers

被引:3
|
作者
Han, Young-Geun [1 ,2 ]
机构
[1] Hanyang Univ, Dept Phys, 222 Wangsimni Ro, Seoul 133791, South Korea
[2] Hanyang Univ, Res Inst Nat Sci, Res Inst, 222 Wangsimni Ro, Seoul 133791, South Korea
来源
NANOSCALE RESEARCH LETTERS | 2017年 / 12卷
基金
新加坡国家研究基金会;
关键词
Long-period gratings; Photonic crystal fiber; Strain sensor; Temperature-insensitivity; STRAIN;
D O I
10.1186/s11671-017-1968-1
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Transmission characteristics of periodically surface-corrugated long-period gratings (LPGs) inscribed on photonic crystal fibers (PCFs) using a wet-etching technique were experimentally investigated. A conventional wet method was implemented to periodically engrave the silica cladding region of the PCFs resulting in the periodic surface corrugation in the PCF. After applying the external strain to the PCF with the periodic surface micro-ridges, periodic modulation of refractive index based on the photoelastic effect is induced resulting in the formation of the PCF-based LPG. Increasing the applied strain successfully improves the extinction ratio of the resonant peak of the PCF-based LPG without the resonant wavelength shift. We also measured the transmission characteristics of the PCF-based LPG with variations in temperature and ambient index.
引用
收藏
页数:6
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