Submicron accuracy fiber taper profiling using whispering gallery modes in a cylindrical fiber micro-resonator

Yuliya Semenova; Vishnu Kavungal; Qiang Wu; Gerald Farrell

doi:10.1117/12.2194986

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28 September 2015 Submicron accuracy fiber taper profiling using whispering gallery modes in a cylindrical fiber micro-resonator

Yuliya Semenova, Vishnu Kavungal, Qiang Wu, Gerald Farrell

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96343F (2015) https://doi.org/10.1117/12.2194986
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

This paper experimentally demonstrates a method for geometrical profiling of thin microfiber tapers with small waist diameters ranging from 10 to 40 μm with submicron accuracy. The method is based on analysis of whispering gallery mode resonances excited in cylindrical fiber resonators as a result of evanescent coupling of light propagating through the fiber taper under test. Measurement results have been verified by optical and SEM microscopic studies. The proposed method can be applied in the fabrication of fiber micro tapers for accurate control of the taper profile and in sensing of biochemical species on the surface of the microfiber.

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Yuliya Semenova, Vishnu Kavungal, Qiang Wu, and Gerald Farrell "Submicron accuracy fiber taper profiling using whispering gallery modes in a cylindrical fiber micro-resonator ", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343F (28 September 2015); https://doi.org/10.1117/12.2194986

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