@inproceedings{aec9ceb89f9f4057a0e2c1b258211b3a,
title = "Introducing negative effective radius variations to control whispering gallery modes propagating on optical fibers",
abstract = "We showed that the microresonators of whispering gallery modes on the surface of standard optical fibers can be shaped by introducing negative radius variations of effective radius instead of positive. To do this, the sample of optical fiber is irradiated with CO2 laser and heated to temperatures that are well below the transformation temperature. The method reduces the influence of the heated spot to the surrounding silica and makes the modification method simpler. Combining both positive and negative modification also expands the range of axial shapes of microresonators that can be introduced with CO2 laser heating. ",
keywords = "microresonator, optical fiber, whispering gallery mode",
author = "Krisanov, {D. V.} and Nesterok, {A. S.} and Vatnik, {I. D.} and Churkin, {D. V.}",
note = "Funding Information: This work is supported by the Russian Science Foundation (18-72-10053). Publisher Copyright: {\textcopyright} 2020 SPIE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; Nanophotonics and Micro/Nano Optics VI 2020 ; Conference date: 11-10-2020 Through 16-10-2020",
year = "2020",
doi = "10.1117/12.2575272",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Zhiping Zhou and Kazumi Wada and Limin Tong",
booktitle = "Nanophotonics and Micro/Nano Optics VI",
address = "United States",
}