Refractive index sensor based on a silica microsphere whispering gallery mode resonator

Arun Kumar Mallik, Qiang Wu, Gerald Farrell, Yuliya Semenova

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

We investigated the excitation of whispering gallery modes (WGMs) in a silica microsphere by evanescent field coupling method using a ∼2 micrometer diameter fiber taper. Based on this configuration we have developed a sensitive refractometric sensor and observed a red-shift of the WGM resonances with the increase of the surrounding medium refractive index. A sensitivity of ∼114 nanometer per RIU has been achieved in the range of refractive indices from 1.3963 to 1.4004.

Original languageEnglish
Title of host publication2015 Workshop on Recent Advances in Photonics, WRAP 2015
PublisherIEEE
Number of pages4
ISBN (Electronic)9781509039210
ISBN (Print)9781509039227
DOIs
Publication statusPublished - 4 Jan 2017
Event2015 Workshop on Recent Advances in Photonics, WRAP 2015 - Bangalore, India
Duration: 16 Dec 201517 Dec 2015

Conference

Conference2015 Workshop on Recent Advances in Photonics, WRAP 2015
CountryIndia
CityBangalore
Period16/12/1517/12/15

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