Optimizing fiber Bragg gratings using a genetic algorithm with fabrication-constraint encoding

Author

Tremblay, Guillaume ; Gillet, Jean-Numa ; Sheng, Yunlong ; Bernier, Martin ; Paul-Hus, Gilles

Author_Institution

Dept. of Phys., Univ. Laval, Quebec, Canada

Volume

23

Issue

12

fYear

2005

Firstpage

4382

Lastpage

4386

Abstract

We propose an advanced genetic algorithm (GA) to design fiber Bragg gratings (FBGs) with given fabrication constraints. Our GA is enhanced by a new Fourier-series-based real-valued encoding to obtain more degrees of freedom and a rank-based fitness function. The new GA enables us to remove phase shifts in the gratings. The designed minimum-dispersion bandpass grating has a dispersion of ±28 ps/nm in the 0.33-nm flat-top passband. The grating is fabricated using a phase mask without phase shift.

Keywords

Bragg gratings; genetic algorithms; optical design techniques; optical fibre dispersion; optical fibre fabrication; Fourier-series-based encoding; bandpass grating; fabrication-constraint encoding; fiber Bragg gratings; flat-top passband; genetic algorithm; minimum-dispersion grating; phase mask; phase shift removal; rank-based fitness function; real-valued encoding; Bragg gratings; Constraint optimization; Encoding; Fabrication; Fiber gratings; Genetic algorithms; Holographic optical components; Holography; Iterative algorithms; Optical filters; Fabrication constraints; fiber Bragg grating (FBG); genetic algorithm (GA); numerical optimization; optical fiber;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2005.858228

Filename

1566767