Title :
Design and Properties of Concave Diffraction Gratings Based on Elliptical Bragg Mirrors
Author :
Pottier, P. ; Packirisamy, Muthukumaran
Author_Institution :
Dept. of Mech. & Ind. Eng., Concordia Univ., Montreal, QC, Canada
Abstract :
Fully dielectric diffraction gratings using Bragg mirrors that can be used in integrated spectrometry or wavelength division multiplexing (WDM) components are presented. Based on extended elliptical Bragg mirrors, they can preferentially select one particular diffraction order. The geometrical design conditions are presented along with numerical simulations for this family of gratings in which diffraction grating and Bragg mirror are not independent, resulting in efficiencies up to 99.9%. High grating efficiency is linked to Bragg mirror efficiency, even though wide Bragg bandwidth can be detrimental to the grating efficiency.
Keywords :
diffraction gratings; integrated optics; mirrors; optical design techniques; wavelength division multiplexing; Bragg mirror efficiency; concave diffraction gratings; dielectric diffraction gratings; diffraction order; elliptical Bragg mirrors; geometrical design conditions; grating efficiency; integrated spectrometry; wavelength division multiplexing; Bragg gratings; Diffraction; Diffraction gratings; Gratings; Indexes; Mirrors; Optical waveguides; Bragg gratings; diffraction gratings; integrated optics; microspectrometers; optical design; wavelength division multiplexing (WDM);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2013.2261853
