DocumentCode
952830
Title
The digital directional coupler: improved design
Author
Syms, R.R.A.
Author_Institution
Dept. of Electr. Eng., Imperial Coll., London, UK
Volume
4
Issue
10
fYear
1992
Firstpage
1135
Lastpage
1138
Abstract
Using a simple analytic model (weak-coupled mode theory), a new design is presented for digital directional couplers (i.e., directional couplers with tapered velocity mismatch and tapered coupling). These have relative immunity to variations in fabrication and operating conditions, and have a steplike switch response. The analysis shows that significantly improved performance can be obtained by simple modifications to the device shape given by R.R.A. Syms and R.G. Peall (1989).<>
Keywords
directional couplers; integrated optics; optical communication equipment; optical couplers; analytic model; device shape; digital directional coupler; operating conditions; steplike switch response; tapered coupling; tapered velocity mismatch; weak-coupled mode theory; Acoustic measurements; Acoustic waves; Directional couplers; Electron optics; Frequency response; Optical device fabrication; Optical devices; Optical filters; Optical switches; Optical waveguides;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.163757
Filename
163757
Link To Document