Mono-Order High-Efficiency Dielectric Concave Diffraction Grating

Author

Pottier, P. ; Packirisamy, Muthukumaran

Author_Institution

Dept. of Mech. & Ind. Eng., Concordia Univ., Montreal, QC, Canada

Volume

30

Issue

17

fYear

2012

Firstpage

2922

Lastpage

2928

Abstract

A planar concave diffraction grating for integrated optics is created by using a grating-distributed Bragg reflector based on dielectric materials. By combining the Bragg condition which leads to very high reflection with the grating diffraction condition which provides wavelength spreading, a mono-order diffraction grating was built with the use of elliptical facets. A computed grating efficiency of 99% was achieved by this new proposed configuration of mono-order grating by suppressing unwanted diffraction orders, while keeping aberration-free focusing.

Keywords

Bragg gratings; integrated optics; optical self-focusing; Bragg condition; aberration-free focusing; dielectric concave diffraction grating; dielectric materials; elliptical facets; grating diffraction; grating-distributed Bragg reflector; high-efficiency diffraction grating; integrated optics; mono-order diffraction grating; planar concave diffraction grating; unwanted diffraction orders; wavelength spreading; Bragg gratings; Diffraction; Diffraction gratings; Gratings; Indexes; Mirrors; Optical waveguides; Bragg gratings; diffraction grating; integrated optics; optical design; planar spectrometer; wavelength division multi plexing (WDM);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2012.2209111

Filename

6248148