DocumentCode
956362
Title
Transmission characteristics of 116.3 km and 65.1 km graded-index v.a.d. fibres at 1.55 ¿m and 1.3 ¿m
Author
Edahiro, T. ; Kawachi, M. ; Sudo, Shunsuke ; Nagai, Hiroto
Author_Institution
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Volume
16
Issue
12
fYear
1980
Firstpage
478
Lastpage
480
Abstract
Seven long pieces of fibre with low loss and wide bandwidth properties made by the v.a.d. method were spliced with V-grooves into an 116.3 km graded-index fibre, and three long pieces of fibre into a 65.1 km fibre. Transmission characteristics of these graded-index fibres were measured with a swept-frequency method using InGaAsP/InP b.h. laser diodes operating at 1.55 ¿m (made by low temperature liquid-phase epitaxial growth) and 1.3 ¿m, respectively. The overall transmission losses and 6 dB down electrical bandwidths at the two wavelengths were 37 dB and 16.5 MHz, 35.2 dB and 36.5 MHz, respectively.
Keywords
optical fibres; semiconductor junction lasers; InGaAsP/InP BH laser diodes; VAD method; graded index fibre; swept frequency method; transmission characteristics; vapour phase axial deposition method;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19800336
Filename
4244105
Link To Document