Strong localization of whispering gallery modes in an optical fiber via asymmetric perturbation of the translation symmetry

L. A Kochkurov; M. Sumetsky

doi:10.1117/12.2084374

3 March 2015 Strong localization of whispering gallery modes in an optical fiber via asymmetric perturbation of the translation symmetry

L. A Kochkurov, M. Sumetsky

Author Affiliations +

Proceedings Volume 9343, Laser Resonators, Microresonators, and Beam Control XVII; 934316 (2015) https://doi.org/10.1117/12.2084374
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

Recently introduced Surface Nanoscale Axial Photonics (SNAP) is based on whispering gallery modes circulating around the optical fiber surface and undergoing slow axial propagation. In this paper we develop the theory of propagation of whispering gallery modes in a SNAP microresonator, which is formed by nanoscale asymmetric perturbation of the fiber translation symmetry and called here a nanobump microresonator. The considered modes are localized near a closed stable geodesic situated at the fiber surface. A simple condition for the stability of this geodesic corresponding to the appearance of a high Q-factor nanobump microresonator is found. The results obtained are important for engineering of SNAP devices and structures.

Citation Download Citation

L. A Kochkurov and M. Sumetsky "Strong localization of whispering gallery modes in an optical fiber via asymmetric perturbation of the translation symmetry", Proc. SPIE 9343, Laser Resonators, Microresonators, and Beam Control XVII, 934316 (3 March 2015); https://doi.org/10.1117/12.2084374

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