DocumentCode
978363
Title
Low-loss fibre-coupled waveguide directional coupler modulator
Author
Alferness, R.C. ; Buhl, Lawrence L. ; Divino, M.D.
Author_Institution
Bell Laboratories, Holmdel, USA
Volume
18
Issue
12
fYear
1982
Firstpage
490
Lastpage
491
Abstract
We report a fibre-coupled Ti: LiNbO3 directional coupler modulator with total fibre-device-fibre insertion loss as low as 1.5 dB for ¿=1.32 ¿m. Low loss has been achieved by using diffusion parameters to give good mode match to the fibre and low propagation loss, an effective SiO2 buffer layer to eliminate electrode loading loss and a directional coupler geometry which minimises the effect of bend loss.
Keywords
directional couplers; lithium compounds; modulators; niobium compounds; optical fibres; titanium; SiO2 buffer layer; diffusion parameters; electrode loading loss; fibre-coupled Ti:LiNbO3 directional coupler modulator; fibre-device-fibre insertion loss;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19820333
Filename
4246469
Link To Document