An In-Fiber Coupler for Whispering-Gallery-Mode Excitation in a Microsphere Resonator

被引：10
|
作者：
Bai, X. Q. [1 ]
Wang, D. N. [1 ]
机构：
[1] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2020年 / 32卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Resonators; fiber optics components; FANO RESONANCES; OPTICAL RESONATORS;
D O I：
10.1109/LPT.2020.2965972
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An integrated in-fiber coupler for excitation of whispering-gallery modes (WGMs) of a microsphere resonator is proposed. The device is fabricated by embedding a microsphere into an optical fiber inner air-cavity through an open micro-channel to excite various WGMs via evanescent field coupling. The asymmetric Fano resonance line shape and the symmetrical Lorentzian line shape with a slope of -13.88 dB/nm and a quality (Q)-factor of $1.81\times 10<^>{3}$ are observed in the transmission spectrum of the device. Such an in-fiber WGM resonator coupling structure has the features of compactness, low-cost, robust and alignment-free.
引用
收藏
页码：188 / 191
页数：4
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