Gas sensing using slow light in photonic crystal waveguides

Hazem Abdul'Aal Awad, L Hasan, K Mnaymneh, Trevor Hall, Ivan Andonovic

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)


We introduce a novel gas sensor based on photonic crystal (PhC) waveguides where the gas sensing is based on the interaction between the slow light mode and the gas. Specifically, when the refractive index of the photonic crystal waveguide changes (due to a change in gas), the slow light regime of the photonic crystal waveguide is affected and shifts in wavelength. We have performed experiments with Helium and Argon gases to confirm the operation of the sensor, with Air being used as reference gas. Results show that the slow light regime typically shifts by 0.6 nm for Helium and 0.05nm for Argon.

Original languageEnglish
Title of host publication2011 7th workshop on fibre and optical passive components (WFOPC) proceedings
Number of pages3
ISBN (Print)9781457708619
Publication statusPublished - 2011
Event7th Workshop on Fibre and Optical Passive Components (WFOPC) - Montreal, Canada
Duration: 13 Jul 201115 Jul 2011


Conference7th Workshop on Fibre and Optical Passive Components (WFOPC)


  • gas sensing
  • slow light
  • photonic crystal waveguides
  • argon
  • sensors
  • photonics
  • photonic crystals
  • helium
  • crystals

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