An optical-sensing modality that exploits Dyakonov–Tamm waves

Farhat Abbas, Akhlesh Lakhtakia, Qaisar A. Naqvi, Muhammad Faryad

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Surface-wave-based optical sensing of an analyte in a fluid relies on the sensitivity of the surface wave to the electromagnetic properties of the analyte-containing fluid in the vicinity of the guiding interface. Surfaceplasmon-polariton (SPP) waves are most commonly used for optical sensing because of the ease of the excitation of an SPP wave when the fluid is partnered with a metal. If the fluid is replaced by a porous, anisotropic, and periodically nonhomogeneous solid filled with the fluid, while the metal is replaced by an isotropic homogeneous dielectric material, the surface wave is called a Dyakonov–Tamm (DT) wave. We have theoretically determined that the incorporation of the DT-waveguiding interface in a prism-coupled configuration provides  an alternative to the analogous SPP wave-based sensor, with comparable dynamic sensitivity.

Original languageEnglish (US)
Pages (from-to)5-8
Number of pages4
JournalPhotonics Research
Volume3
Issue number1
DOIs
StatePublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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