Reflection spectrum study and polarization effects on apodized fiber Bragg grating filter

Moez Ferchichi; Monia Najjar; Houria Rezig

doi:10.1117/1.OE.53.8.086110

22 August 2014 Reflection spectrum study and polarization effects on apodized fiber Bragg grating filter

Moez Ferchichi, Monia Najjar, Houria Rezig

Author Affiliations +

Optical Engineering, Vol. 53, Issue 8, 086110 (August 2014). https://doi.org/10.1117/1.OE.53.8.086110

Abstract

Spectrum properties of apodized fiber Bragg gratings (AFBGs) are well studied, in particular, when there is a need to reduce transmission side lobes. Otherwise, the polarization properties of these gratings are rarely reported when evaluating system performance. We analyze the reflected spectrum, the polarization-dependent loss (PDL), and the differential group delay (DGD) of an AFBG written in a single-mode fiber (SMF28). The evolution of these properties versus the grating parameters is studied based on the coupled mode theory. We mainly focus on the PDL and DGD maximum amplitudes and their wavelength separation. The simulation analysis is developed by means of the transfer matrix method. We demonstrate that the apodization function induces some asymmetry between the left and right parts of the PDL and DGD curves. The maximum amplitudes of the PDL and DGD converge to constant values versus birefringence but increase with grating length.

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Moez Ferchichi, Monia Najjar, and Houria Rezig "Reflection spectrum study and polarization effects on apodized fiber Bragg grating filter," Optical Engineering 53(8), 086110 (22 August 2014). https://doi.org/10.1117/1.OE.53.8.086110

Published: 22 August 2014

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KEYWORDS

Birefringence

Polarization

Fiber Bragg gratings

Apodization

Optical filters

Commercial off the shelf technology

Optical engineering

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