Introducing negative effective radius variations to control whispering gallery modes propagating on optical fibers

D. V. Krisanov; A. S. Nesterok; I. D. Vatnik; D. V. Churkin

doi:10.1117/12.2575272

10 October 2020 Introducing negative effective radius variations to control whispering gallery modes propagating on optical fibers

D. V. Krisanov, A. S. Nesterok, I. D. Vatnik, D. V. Churkin

Author Affiliations +

Proceedings Volume 11556, Nanophotonics and Micro/Nano Optics VI; 115560X (2020) https://doi.org/10.1117/12.2575272
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

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.

Conference Presentation

Citation Download Citation

D. V. Krisanov, A. S. Nesterok, I. D. Vatnik, and D. V. Churkin "Introducing negative effective radius variations to control whispering gallery modes propagating on optical fibers", Proc. SPIE 11556, Nanophotonics and Micro/Nano Optics VI, 115560X (10 October 2020); https://doi.org/10.1117/12.2575272

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