Empirical Model of Optical Sensing via Spectral Shift of Circular Bragg Phenomenon

Tom G. Mackay, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Setting up an empirical model of optical sensing to exploit the circular Bragg phenomenon displayed by chiral sculptured thin films (CSTFs), we considered a CSTF with and without a central twist defect of π/2 rad. The circular Bragg phenomenon of the defect-free CSTF and the spectral hole in the copolarized reflectance spectrum of the CSTF with the twist defect were both found to be acutely sensitive to the refractive index of a fluid that infiltrates the void regions of the CSTF. These findings bode well for the deployment of CSTFs as optical sensors.

Original languageEnglish (US)
Pages (from-to)92-101
Number of pages10
JournalIEEE Photonics Journal
Volume2
Issue number1
DOIs
StatePublished - Feb 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Empirical Model of Optical Sensing via Spectral Shift of Circular Bragg Phenomenon'. Together they form a unique fingerprint.

Cite this