Abstract
We present a novel dual-bottle microresonator with a high ${ Q}$-factor exceeding ${{10}^7}$. Such a resonator consists of two lateral resonators and one central resonator. The maximum diameter of the lateral resonator is $\sim{180}\;{\unicode{x00B5}{\rm m}}$, and the central diameter is 124.91 µm. Characteristics of the whispering gallery mode spectra are investigated and explained by the microbottle resonance, mode interference, and scattering effects. Strain-tuning sensitivity varies from 0.126 to 1.7 pm/µ$\unicode{x03B5}$ when a tapered fiber is placed at the resonator’s different positions. With a coupled area at the middle of the central resonator, the highest, to the best of our knowledge, strain sensitivity of 1.7 pm/µ$\unicode{x03B5}$, which is higher than previously reported solid microresonator strain sensors, is achieved.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Shen Liu, Zhongyuan Sun, Lin Zhang, Cailing Fu, Yu Liu, Changrui Liao, Jun He, Zhiyong Bai, Ying Wang, and Yiping Wang
Opt. Lett. 43(17) 4077-4080 (2018)
Huibo Fan, Liang Chen, and Xiaoyi Bao
Opt. Lett. 45(11) 3143-3146 (2020)
Senyu Wang, Yiwei Ma, Tao Geng, Cuiting Sun, Hongjia Zhu, Xiaoyang Li, Yang Yi, Shuo Zhang, Weimin Sun, and Libo Yuan
Opt. Lett. 45(15) 4156-4159 (2020)