Temperature sensitivity in birefringent photonic crystal fiber with triple defect

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper


  • Francis Berghmans
  • Tadeusz Martynkien
  • Marcin Szpulak
  • Maciej Kieryk
  • Gabriela Statkiewicz
  • Jacek Olszewski
  • Waclaw Urbanczyk
  • Jan Wojcik
  • Pawel Mergo
  • Mariusz Makara
  • Tomasz Nasilowski
  • Hugo Thienpont

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We measured and calculated the spectral dependence of the polarimetric sensitivity to temperature (dB/dT) in a photonic crystal holey fiber. The birefringence in this fiber is induced by the elliptical shape of the core, which consists of a triple defect in the hexagonal structure. Comparison of the temperature sensitivity measured for the bare fiber and for the fiber with polymer coating shows that the stress induced by the thermal expansion of the polymer contributes significantly to the overall temperature response. Measurements carried out for the bare fiber demonstrate that the temperature sensitivity has a positive sign and strongly increases vs. wavelength. Additionally, we present the results of calculations of the spectral dependence of dB/dT obtained using a finite element method. The calculated and measured values of dB/dT show relatively good agreement.


Original languageEnglish
Title of host publication17th International Conference on Optical Fibre Sensors
Publication statusPublished - May 2005
Event2005 - SPIE: Conference on Optical Fibre Sensors - Oud St-Jan Art and Congress Centre, Bruges, Belgium
Duration: 23 May 200527 May 2005


Conference2005 - SPIE


  • birefringent photonic crystal fiber, sensitivity to temperature

ID: 153810