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.
|Title of host publication||Laser resonators, microresonators, and beam control XVII|
|Editors||Alexis V. Kudryashov, Alan H. Paxton, Vladimir S. Ilchenko, Lutz Aschke, Kunihiko Washio|
|Place of Publication||Bellingham, WA (US)|
|Number of pages||5|
|Publication status||Published - 3 Mar 2015|
|Event||Laser Resonators, Microresonators, and Beam Control XVII - San Francisco, CA, United States|
Duration: 9 Feb 2015 → 12 Feb 2015
|Conference||Laser Resonators, Microresonators, and Beam Control XVII|
|City||San Francisco, CA|
|Period||9/02/15 → 12/02/15|
Bibliographical noteL.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 (March 3, 2015)
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- optical fiber
- slow light
- whispering gallery modes