Fibre Bragg gratings in few-mode and multimode fibres

Polina Zavyalova; Shravan Kruthick Sridhar; Suresh Sivanandam; Peter R. Herman; Boyan Zhou

doi:10.1117/12.3022568

26 August 2024 Fibre Bragg gratings in few-mode and multimode fibres

Polina Zavyalova, Shravan Kruthick Sridhar, Suresh Sivanandam, Peter R. Herman, Boyan Zhou

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131006Q (2024) https://doi.org/10.1117/12.3022568
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Fibre Bragg gratings (FBGs) have found several uses in astronomical instrumentation such as spectral filtering and spectroscopic analysis. FBGs are conventionally inscribed in single-mode fibres where spectral responses are easily modelled and desired features are readily fabricated. Gratings in multimode fibres yield multiple Bragg resonances that can pose restrictions in their applications. However, direct writing of FBGs selectively across the cross-section of the multimode core waveguide has the potential to tailor the grating coupling independently for each mode and enable modeselective responses for a more versatile spectral and beam control filtering by the FBG. This paper explores the properties of various FBG designs in multimode and few-mode fibres, discusses the options for their modelling, and considers potential applications for astronomical instrumentation.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Polina Zavyalova, Shravan Kruthick Sridhar, Suresh Sivanandam, Peter R. Herman, and Boyan Zhou "Fibre Bragg gratings in few-mode and multimode fibres", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 131006Q (26 August 2024); https://doi.org/10.1117/12.3022568

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