DocumentCode
1250117
Title
Reduction of coupling coefficients for distributed Bragg reflection in corrugated narrow-rib waveguides
Author
Weitman, G. ; Hardy, A.
Author_Institution
Dept. of Electr. Eng., Tel Aviv Univ., Israel
Volume
144
Issue
2
fYear
1997
fDate
4/1/1997 12:00:00 AM
Firstpage
101
Lastpage
103
Abstract
The coupling coefficient in corrugated rib waveguides with rectangular teeth is calculated as a function of the rib widths. For sufficiently wide ribs (a few wavelengths in the material) the coupling coefficient asymptotically approaches its slab waveguide limit. But for narrower ribs the coupling coefficient drops rapidly with the rib width, whereas the power filling factor is almost unaffected owing to the strong field confinement. The effect on the threshold conditions of DFB lasers is also considered
Keywords
distributed feedback lasers; optical couplers; optical waveguides; rib waveguides; waveguide lasers; asymptotically; corrugated narrow-rib waveguides; coupling coefficient reduction; distributed Bragg reflection; power filling factor; rectangular teeth; rib width; rib widths; slab waveguide limit; strong field confinement; threshold conditions;
fLanguage
English
Journal_Title
Optoelectronics, IEE Proceedings -
Publisher
iet
ISSN
1350-2433
Type
jour
DOI
10.1049/ip-opt:19970829
Filename
590331
Link To Document