Strain-based tunable optical microresonator with an in-fiber rectangular air bubble


We demonstrate a strain-based fully tunable, near-lossless, whispering gallery mode (WGM) resonator made of an in-fiber rectangular air bubble, which is fabricated by splicing two segments of standard single-mode fibers. Such a resonator, with a 39 μm order radius and 1 μm order wall thickness, contributes to a high quality factor exceeding 106. The tuning in resonant wavelength is achieved by applying tensile strain to the resonator, and the voltage-tuning rate of the WGM resonance peaks is about 31.96 pm/V (strain-tuning rate ∼14.12 pm∕με), and the corresponding tuning accuracy is better than 0.03 pm. Since the tensile strain applied on the resonator can reach 1000 με, the achievable total tunable bandwidth of ∼14.12 nm is more than two times that of its azimuthal free spectral range.

Publication DOI:
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.osa ... i=ol-43-17-4077 (Publisher URL)
PURE Output Type: Article
Published Date: 2018-08-16
Published Online Date: 2018-07-26
Accepted Date: 2018-07-25
Authors: Liu, Shen
Sun, Zhongyuan
Zhang, Lin ( 0000-0002-1691-5577)
Fu, Cailing
Liu, Yu
Liao, Changrui
He, Jun
Bai, Zhiyong
Wang, Ying
Wang, Yiping



Version: Accepted Version

| Preview

Export / Share Citation


Additional statistics for this record