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Fabrication of a π-phase-shifted fiber Bragg grating at twice the Bragg wavelength with the standard phase mask technique

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posted on 2024-07-09, 19:35 authored by Sui P. Yam, Zourab Brodzeli, Betty P. Kouskousis, Claire M. Rollinson, Scott WadeScott Wade, Greg W. Baxter, Stephen F. Collins
A pair of reflection peaks/transmission dips, at twice the Bragg wavelength, were observed in spectra of a Type I fiber Bragg grating written with the standard phase mask technique. The occurrence of two peaks/ dips, rather than one, is attributed to the interleaved refractive index modulations along the fiber core, with the periodicity of the phase mask that has been observed previously in images of gratings that cause destructive interference in a reflected wave at the Bragg condition owing to the π phase difference between the grating phases. Thus the standard phase mask technique produced an alternative type of pi-phase-shifted grating at twice the design Bragg wavelength.

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ISSN

1539-4794

Journal title

Optics Letters

Volume

34

Issue

13

Pagination

2 pp

Publisher

Optical Society of America

Copyright statement

Copyright © 2009 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.34.002021. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Language

eng

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