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Sensors 2019, 19(2), 433;

Experimental Analysis of Bragg Reflection Peak Splitting in Gratings Fabricated Using a Multiple Order Phase Mask

Department of Optics and Photonics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
Laboratory of Optical Fiber Technology, Maria Curie-Sklodowska University, pl. M. Curie-Sklodowskiej 3, 20-031 Lublin, Poland
Author to whom correspondence should be addressed.
Received: 10 December 2018 / Revised: 6 January 2019 / Accepted: 18 January 2019 / Published: 21 January 2019
(This article belongs to the Section Physical Sensors)
PDF [6624 KB, uploaded 21 January 2019]
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We performed an experimental analysis of the effect of phase mask alignment on the Bragg grating reflection spectra around the wavelength of λB = 1560 nm fabricated in polymer optical fiber by using a multiple order phase mask. We monitored the evolution of the reflection spectra for different values of the angle ϕ by describing the tilt between the phase mask and the fiber. We observed that the peak at λB is split into five separate peaks for the nonzero tilt and that separation of the peaks increases linearly with ϕ. Through comparison with theoretical data we were able to identify the five peaks as products of different grating periodicities, which are associated with the interference of different pairs of diffraction orders on the phase mask. View Full-Text
Keywords: Fiber Bragg gratings; phase mask; polymer fibers Fiber Bragg gratings; phase mask; polymer fibers

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Statkiewicz-Barabach, G.; Tarnowski, K.; Kowal, D.; Mergo, P. Experimental Analysis of Bragg Reflection Peak Splitting in Gratings Fabricated Using a Multiple Order Phase Mask. Sensors 2019, 19, 433.

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