Title :
Diffraction from concave gratings in planar waveguides
Author_Institution :
Dept. of Phys., Manitoba Univ., Winnipeg, Man., Canada
fDate :
3/1/1995 12:00:00 AM
Abstract :
Performance of planar waveguide devices employing concave gratings can be numerically modeled with diffraction theory. The details of the method are presented. Approximations are introduced to derive simple equations and numerical calculations are used to verify the approximations. These formulas clarify the sources of loss caused by concave gratings and their application for optimizing grating performance is demonstrated.<>
Keywords :
approximation theory; diffraction gratings; light diffraction; modelling; optical planar waveguides; optical receivers; optical waveguide components; optical waveguide theory; approximations; concave grating diffraction; diffraction theory; grating performance optimisation; numerical calculations; numerically modeled; planar waveguide devices; planar waveguides; simple equations; Detectors; Diffraction gratings; Equations; Numerical models; Optical losses; Optical scattering; Optical waveguides; Photonics; Planar waveguides; Waveguide theory;
Journal_Title :
Photonics Technology Letters, IEEE
