Aberration theory of arrayed waveguide grating

Author

Wang, Daoyi ; Jin, Guofan ; Yan, Yingbai ; Wu, Minxian

Author_Institution

Dept. of Precision Instrum., Tsinghua Univ., Beijing, China

Volume

19

Issue

2

fYear

2001

fDate

2/1/2001 12:00:00 AM

Firstpage

279

Lastpage

284

Abstract

The general aberration theory of arrayed waveguide grating (AWG) is proposed in this paper. The derived conclusions can be applied to any symmetrical AWGs. With the aberration theory, the spectral response can be optimized. Some performances of an AWG, for example, crosstalk and channel number, are expected to be improved by reducing the aberrations. A common AWG with the Rowland geometry has low aberrations for the absence of the second-order aberration. To further reduce the aberrations, nonstandard AWGs are considered. The AWG based on three stigmatic points is proved to have a perfect performance

Keywords

diffraction gratings; optical arrays; optical waveguide theory; optical waveguides; optimisation; symmetry; Rowland geometry; aberration theory; arrayed waveguide grating aberration theory; channel number; crosstalk; low aberrations; second-order aberration; spectral response optimisation; stigmatic points; symmetrical AWG; Arrayed waveguide gratings; Crosstalk; Filters; Geometry; Instruments; Optical arrays; Optical coupling; Optical waveguides; Waveguide theory; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.917905

Filename

917905