Article

Modeling and measurement of temperature sensitivity in birefringent photonic crystal holey fibers

Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
Applied Optics (Impact Factor: 1.69). 01/2006; 44(36):7780-8. DOI: 10.1364/AO.44.007780
Source: PubMed

ABSTRACT We analyzed theoretically the spectral dependence of polarimetric sensitivity to temperature (KT) and the susceptibility of phase modal birefringence to temperature (dB/dT) in several birefringent photonic crystal holey fibers of different construction. Contributions to dB/dT related to thermal expansion of the fiber dimensions and that related to temperature-induced changes in glass and air refractive indices were calculated separately. Our results showed that dB/dT depends strongly on the material used for manufacturing the fiber and on the fiber's geometry. We demonstrate that, by properly designing the birefringent holey fiber, it is possible to reduce its temperature sensitivity significantly and even to ensure a null response to temperature at a specific wavelength. Furthermore, we show that the temperature sensitivity in a fiber with arbitrary geometry can be significantly reduced by proper choice of the glass used in the fiber's manufacture. We also measured the polarimetric sensitivity to temperature and identified its sign in two silica-air fibers. The experimental values are in good agreement with the results of modeling.

0 Followers
 · 
98 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: We present the results of broadband dispersion measurement of a two-mode birefringent holey fiber (BHF). First, a spectral interferometric technique employing an unbalanced Mach-Zehnder interferometer with the fiber in the test arm is used for measuring the wavelength dependence of the group effective index of the fundamental mode supported by the fiber. Second, a spectral interferometric technique employing a tandem configuration of a Michelson interferometer and the BHF under test is used for measuring the group modal birefringence dispersion for two lowest-order linearly polarized (LP) modes supported by the BHF. The data measured over a broad spectral range are fitted to polynomials to obtain the dispersion of the phase modal birefringence for both LP modes. We reveal that the results are in agreement with a general model of birefringence in air-silica BHFs.
    Proceedings of SPIE - The International Society for Optical Engineering 05/2009; DOI:10.1117/12.819253 · 0.20 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The spectral interference of polarization modes in a highly birefringent (HB) fiber to measure temperature is analyzed theoretically and experimentally. A tandem configuration of a birefringent delay line and a sensing HB fiber is considered and the spectral interferograms are modelled for the known birefringence dispersion of the HB fiber under test. As the delay line, a birefringent quartz crystal of a suitable thickness is employed to resolve a channeled spectrum. The channeled spectra are recorded for different temperatures and the polarimetric sensitivity to temperature, determined in the spectral range from 500 to 850 nm, is decreasing with wavelength. It is demonstrated that the temperature sensing is possible using the wavelength interrogation, i.e., the position of a given interference maximum is temperature dependent. The temperature sensitivity of the HB fiber under test is −0.25 nm/K and the resolution is better than 0.5 K.
    Optics and Lasers in Engineering 07/2015; 70. DOI:10.1016/j.optlaseng.2015.03.003 · 1.70 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The spectral dependence of the polarimetric sensitivity of a birefringent side-hole fiber to temperature and hydrostatic pressure was measured using a simple experimental setup comprising a broadband source, a polarizer, a birefringent fiber under test, a birefringent delay line, an analyzer and a compact spectrometer. The spectral interferograms, characterized by the equalization wavelength at which spectral interference fringes have the highest visibility (the largest period) due to the zero overall group birefringence, were processed to retrieve the phase as a function of wavelength. First, from the retrieved phase functions corresponding to different temperatures of the fiber under test, the spectral polarimetric sensitivity to temperature was obtained. Second, from the retrieved phase functions corresponding to different hydrostatic pressures in a chamber with the fiber under test, the spectral polarimetric sensitivity to hydrostatic pressure was obtained.
    Proceedings of SPIE - The International Society for Optical Engineering 05/2013; DOI:10.1117/12.2016969 · 0.20 Impact Factor