Title :
Design considerations for Rowland circle gratings used in photonic integrated devices for WDM applications
Author :
Wu, MingCho ; Chen, Yung Jui
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., Baltimore, MD, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
Design issues of photonic integrated devices for WDM applications based on Rowland circle gratings have been studied. Effects of grating period, diffraction order, grating aperture (size), and Rowland circle size on device performance are discussed. The point spread function of a typical Rowland circle grating is evaluated numerically which yields an optical image (spot) size of several microns in diameter. Our study shows that there is a tradeoff between channel dispersion and feedback efficiency in choosing the grating period when a Rowland circle grating is used as the wavelength-selective element for a parallel-waveguide-type wavelength division multiplexing device
Keywords :
diffraction gratings; integrated optics; multiplexing equipment; optical communication equipment; optical design techniques; optical dispersion; optical feedback; optical fibre communication; optical images; optical transfer function; photonic switching systems; wavelength division multiplexing; Rowland circle gratings; Rowland circle size; WDM applications; channel dispersion; design considerations; device performance; diffraction order; feedback efficiency; grating aperture; grating period; optical image; parallel-waveguide-type wavelength division multiplexing device; photonic integrated devices; point spread function; spot; wavelength-selective element; Apertures; Diffraction gratings; Geometrical optics; Optical beams; Optical diffraction; Optical feedback; Optical waveguides; Spectroscopy; Structural beams; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
