DocumentCode
1122999
Title
An analysis for contradirectional-coupler-type optical grating filters
Author
Imoto, Nobuyuki
Author_Institution
Nippon Telegraph and Telephne Public Corporation, Musashino, Tokyo, Japan
Volume
3
Issue
4
fYear
1985
fDate
8/1/1985 12:00:00 AM
Firstpage
895
Lastpage
900
Abstract
Characteristics of coupler-type optical-grating filters are analyzed with respect to output efficiency, transmission, crosstalk, and reflections, it is confirmed that the couplers should be asymmetrical in order to obtain high output and transmission efficiency, and that the grating should be fabricated only on the output waveguide of the coupler in order to reduce crosstalk and reflections due to undesired coupling. Calculation examples are given for silica and InP-embedded channel waveguides, which confirm the efficacy of this coupler-type optical grating filter.
Keywords
Optical couplers; Optical filters; Optical waveguides; Couplers; Gratings; Optical beams; Optical coupling; Optical crosstalk; Optical filters; Optical reflection; Optical waveguides; Silicon compounds; Wavelength division multiplexing;
fLanguage
English
Journal_Title
Lightwave Technology, Journal of
Publisher
ieee
ISSN
0733-8724
Type
jour
DOI
10.1109/JLT.1985.1074284
Filename
1074284
Link To Document