Continuously distributed sensing via two photon excited fluorescence in doped optical fibre

I.S. Ruddock, T.P.J. Han

Research output: Contribution to conferencePaperpeer-review

8 Citations (Scopus)


The design and operating parameters of a new class of continuously distributed optical fibre sensor are described. Using counter-propagating pulses, two-photon excitation of fluorescence from ions doped into the fibre enables any position to be monitored. By this means temperature or strain may be sensed with high spatial and temporal resolution. As the doped fibre is transparent for single photon absorption at the wavelength of the light pulses, attenuation does not set an upper limit to its length.
Original languageEnglish
Number of pages4
Publication statusPublished - 8 Sep 2005
EventSensors and their Applications XIII - Kent, United Kingdom
Duration: 6 Sep 20058 Sep 2005


ConferenceSensors and their Applications XIII
Country/TerritoryUnited Kingdom


  • fluorescence
  • optical fibre
  • two-photon excitation
  • nanoscience

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