Mode-splitting of size-mismatched coupling microspheres

Jianwei Wang; Yu Zhang; Zhihai Liu; Hanyang Li

doi:10.1117/12.3045862

13 December 2024 Mode-splitting of size-mismatched coupling microspheres

Jianwei Wang, Yu Zhang, Zhihai Liu, Hanyang Li

Author Affiliations +

Proceedings Volume 13500, AOPC 2024: Micro-Nano Optics; 1350003 (2024) https://doi.org/10.1117/12.3045862
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

The “mode-splitting” phenomenon based on whispering gallery mode (WGM) was observed in coupling resonators, which are composed of two size-mismatched microspheres. The wavelength separation and intensity of the two splitting peaks varied with changing sized discrepancy for coupling microspheres. As the size of the first microsphere was fixed and coupled with a tapered fiber, it’s shown that the wavelength separation of two splitting peaks increased firstly and then decreased with the increasing size of the size-varied microsphere coupled to the first. The maximal wavelength separation could be achieved for identical-sized microspheres, with a minimal difference for intensity also noted. This analysis could provide better application prospects in measurement for judging similar-sized microspheres and measuring the size of microspheres.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jianwei Wang, Yu Zhang, Zhihai Liu, and Hanyang Li "Mode-splitting of size-mismatched coupling microspheres", Proc. SPIE 13500, AOPC 2024: Micro-Nano Optics, 1350003 (13 December 2024); https://doi.org/10.1117/12.3045862

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