Thermal response of Bragg gratings in PMMA microstructured optical fibers.

  title={Thermal response of Bragg gratings in PMMA microstructured optical fibers.},
  author={Karen E Carroll and Chi Zhang and David J. Webb and Kyriacos Kalli and Alexander Argyros and Maryanne C. J. Large},
  journal={Optics express},
  volume={15 14},
We report on the thermal characteristics of Bragg gratings fabricated in polymer optical fibers. We have observed a permanent shift in the grating wavelength at room temperature which occurs when the grating has been heated above a threshold temperature. This threshold temperature is dependent on the thermal history of the grating, and we attribute the effect to a shrinking of the fiber. This effect can be avoided by annealing the fiber before grating inscription, resulting in a linear response… CONTINUE READING
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