Title :
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
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.858228
