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Writing Bragg Gratings in Multicore Fibers

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Novel custom fiber Bragg grating fabrication technique based on push-pull phase shifting interferometry.

Mathieu Gagné¹, Lucian Bojor, Romain Maciejko

¹Advanced Photonics Concepts Laboratory, Department of Engineering Physics1, Ecole Polytechnique de Montréal, C.P. 6079, Succ. Centre-ville, Montréal H3C 3A7, QC, Canada. mathieu-2.gagne@polymtl.ca

|December 24, 2008

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A novel ultraviolet (UV) writing technique fabricates custom fiber Bragg gratings (FBGs) with continuous fringe patterns. This method allows for potentially infinite-length gratings with arbitrary profiles and chirp, avoiding mechanical disturbances.

Area of Science:

Optoelectronics
Photonics
Materials Science

Background:

Fiber Bragg gratings (FBGs) are crucial optical components used in various sensing and telecommunication applications.
Current fabrication methods for custom FBGs can be limited by mechanical stability and length constraints.

Purpose of the Study:

To introduce a new UV-writing technique for fabricating custom fiber Bragg gratings.
To demonstrate a method for creating FBGs with arbitrary profiles and chirp without mechanical perturbations.

Main Methods:

A continuously moving fringe pattern is generated using two electro-optical UV modulators.
The fringe pattern is synchronized with a moving optical fiber during the writing process.

Main Results:

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Preliminary results demonstrate the feasibility of the proposed UV-writing technique.
The technique shows potential for fabricating infinitely long FBGs with custom profiles and chirp.

Conclusions:

The new UV-writing technique offers a promising, perturbation-free approach for advanced FBG fabrication.
This method could enable the creation of highly customized and extended FBGs for specialized applications.