Photonic Sensors

, Volume 3, Issue 3, pp 208–213 | Cite as

Micro-structured fiber interferometer as sensitive temperature sensor

  • F. C. Favero
  • M. Becker
  • R. Spittel
  • M. Rothhardt
  • J. Kobelke
  • H. Bartelt
Open Access


We report on a fast and sensitive temperature sensor using a micro-structured or photonic crystal fiber interferometer with a high germanium doped fiber core. The wavelength sensitivity for temperature variation was as high as ΔλT= 78 pm/°C up to 500 °C, which was 6 times more sensitive than the fiber Bragg grating temperature sensitivity of ΔλT= 13 pm/°C at 1550 nm. The sensor device was investigated concerning the sensitivity characteristics and response time.


Micro-structured optical fiber fiber interferometer fiber temperature sensor 


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Copyright information

© The Author(s) 2013

Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

Authors and Affiliations

  • F. C. Favero
    • 1
  • M. Becker
    • 1
  • R. Spittel
    • 1
  • M. Rothhardt
    • 1
  • J. Kobelke
    • 1
  • H. Bartelt
    • 1
  1. 1.Institute of Photonic Technology (IPHT)JenaGermany

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