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Microcavity connceted with a waveguide for application to optical sensing

  • Shuai Liu
  • , Zhi Wei Chen
  • , Zhi Yuan Gu
  • , Hui Lin Zhai
  • , Qing Hai Song
  • Harbin Institute of Technology Shenzhen

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

Abstract

A high-performance microcavity sensor with a port connected with a waveguide directly is investigated numerically. With input light and output light transmitting in the same waveguide, we propose a robust coupling mechanism. For a circular microcavity with a diameter of 20μm and a refractive index of 1.45, our numerical results show that the coupled modes are excited and more than 5×104 Q-factor is calculated from the transmission spectrum. Dramatically, the spectrum shows a fano-shape resonance at specific wavelength which is useful for high-precision optical sensing on the order of 10-5.

Original languageEnglish
Title of host publicationDesign, Manufacturing and Mechatronics
PublisherTrans Tech Publications
Pages466-469
Number of pages4
ISBN (Print)9783038351016
DOIs
StatePublished - 2014
Externally publishedYes
Event2014 International Conference on Design, Manufacturing and Mechatronics, ICDMM 2014 - Changsha, Hunan, China
Duration: 21 Mar 201423 Mar 2014

Publication series

NameApplied Mechanics and Materials
Volume551
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2014 International Conference on Design, Manufacturing and Mechatronics, ICDMM 2014
Country/TerritoryChina
CityChangsha, Hunan
Period21/03/1423/03/14

Keywords

  • Coupled modes
  • Microcavity
  • Optical sensor

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