Gas detection by cavity ring-down absorption with a fibre optic amplifier loop

K. Atherton, G. Stewart, B. Culshaw

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

10 Citations (Scopus)


Cavity ring-down is investigated as a technique to increase the sensitivity of optical fibre gas sensors. The ring-down cavity consists of an optical fibre loop containing a micro-optic gas cell and an erbium-doped optical fibre amplifier. The erbium fibre amplifier introduces gain into the cavity to increase the ring-down times and therefore the system sensitivity. This paper reports an investigation of the system sensitivity
Original languageEnglish
Title of host publicationVibrational spectrocopy-based sensor systems
EditorsS.D Christesen, A.J Sedlacek
Place of PublicationBellingham, WA
Number of pages6
Publication statusPublished - 2002
EventConference on Vibrational Spectroscopy-Based Sensor Systems - Newton, MA , United States
Duration: 1 Nov 20012 Nov 2001

Publication series

NameProceedings of the society of photo-optical instrumentation engineers (SPIE)
ISSN (Print)0277-786X


ConferenceConference on Vibrational Spectroscopy-Based Sensor Systems
CountryUnited States
CityNewton, MA


  • spectroscopy
  • gas detection
  • ring-down
  • fibre optic amplifier

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