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Optica, Optics Express, 14(15), p. 8844, 2007

DOI: 10.1364/oe.15.008844

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Thermal response of Bragg gratings in PMMA microstructured optical fibers

Journal article published in 2007 by Karen E. Carroll, Chi Zhang, David J. Webb, Kyriacos Kalli ORCID, Alexander Argyros, Maryanne C. J. Large
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We report on the thermal characteristics or 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 with temperature and an increased linear operating temperature range of the grating. © 2007 Optical Society of America.