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Highly stable in-fiber integrated silica microresonator

Authors :
Junfeng Jiang
Zewen Zhou
Shuangchen Ruan
Peiguang Yan
Yang Yu
Bo Zhang
Jinde Yin
Wenyin Wei
Hao Chen
Huifeng Wei
Source :
Applied Physics Letters. 116:213504
Publication Year :
2020
Publisher :
AIP Publishing, 2020.

Abstract

We demonstrate a compact in-fiber integrated microresonator based on a silica microsphere and microstructure fiber. Whispering-gallery-modes (WGMs) are effectively excited through evanescent field coupling between the silica microsphere and one of the input tube waveguides of negative curvature fiber. The WGM spectrum with the Q-factor of ∼2.56 × 103 and the extinction ratio of ∼15.2 dB is achieved. The transmission spectra evolution for 5 h reveals the long-term stability of WGM excitation. The experimental results indicate that the in-fiber integrated resonator has the advantages of high stability, high integration, robustness, alignment-free assembly structure, and low cost, motivating potential applications in the lab-in-fiber platform.

Details

ISSN :
10773118 and 00036951
Volume :
116
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........1890524d4110891bec9178457bda12ae
Full Text :
https://doi.org/10.1063/5.0006066