Abstract
This paper experimentally demonstrates a method for geometrical profiling of asymmetries in fabricated thin microfiber tapers with waist diameters ranging from ~10 to ~50 μm with submicron accuracy. The method is based on the analysis of whispering gallery mode resonances excited in cylindrical fiber resonators as a result of evanescent coupling of light propagating through the fiber taper. The submicron accuracy of the proposed method has been verified by SEM studies. The method can be applied as a quality control tool in fabrication of microfiber based devices and sensors or for fine-tuning of microfiber fabrication set-ups.
Original language | English |
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Pages (from-to) | 1757-1765 |
Journal | Journal of Lightwave Technology |
Volume | 36 |
Issue number | 9 |
Early online date | 18 Dec 2017 |
DOIs | |
Publication status | Published - 1 May 2018 |
Keywords
- fibers
- fibres
- fibre optic sensors
- microcavity devices
- surface waves
- fibre properties