Title :
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
fDate :
6/1/1990 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
