Tunable high-Q tapered silica microcylinder filter

被引：11
|
作者：
Yin, Chenglong [1 ]
Gu, Jinyi [1 ]
Li, Mi [1 ]
Song, Yuejiang [1 ]
机构：
[1] Nanjing Univ, Inst Opt Commun Engn, Nanjing 210093, Jiangsu, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2013年 / 11卷 / 08期
基金：
中国国家自然科学基金;
关键词：
WHISPERING-GALLERY MODES; MICROSPHERES;
D O I：
10.3788/COL201311.082302
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose and demonstrate a tunable optical filter based on a tapered silica microcylinder, whose diameter is gradually varied along its longitudinal axis. The tapered microcylinder comprises a slowly varying transition zone fabricated through the fiber drawing technique. Given the tapered diameter of the microcylinder, the resonant wavelengths can be tuned by displacing the tapered microcylinder. This tunable filter exhibits a high Q-factor (similar to 10(6)) and a large tuning range (>1 free spectral range (FSR)).
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页数：3
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