Mode conversion and filtering of bound modes in planar waveguide Bragg reflectors

Author

Sudbo, Aasmund Sv

Author_Institution

AT&T Bell Lab., Murray Hill, NJ, USA

Volume

8

Issue

6

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

927

Lastpage

935

Abstract

A formalism for computing the reflectivity at oblique incidence of grating Bragg reflectors in integrated optics is developed. Attention is focused on the wavelength region near the Bragg wavelengths, where efficient reflection and strong Te-TM mode coupling occurs. The waveguide fields are expanded in normal modes of a waveguide film without the grating, and an answer is given to the question of how to define this film. Polarization resolved reflectivity spectra for a number of Bragg reflectors are calculated, and implications for device design in integrated optics are discussed

Keywords

diffraction gratings; integrated optics; light reflection; optical waveguide theory; Bragg wavelengths; bound modes; device design; filtering; grating Bragg reflectors; integrated optics; mode conversion; normal modes; oblique incidence; planar waveguide Bragg reflectors; reflection; reflectivity; reflectivity spectra; strong Te-TM mode coupling; waveguide fields; waveguide film; Bragg gratings; Filtering; Integrated optics; Optical computing; Optical films; Optical filters; Optical planar waveguides; Optical waveguides; Planar waveguides; Reflectivity;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.54512

Filename

54512