Title :
21.2 km graded-index v.a.d. fibre with low loss and wide bandwidth
Author :
Sudo, Shunsuke ; Kawachi, M. ; Edahiro, T. ; Chida, K.
Author_Institution :
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Abstract :
A 21.2 km graded-index optical fibre has been fabricated by the v.a.d. method. Special attention was paid to the temperature distribution on the growing surface of the porous preform to obtain the desired refractive-index profile. In the 21.2 km fibre, the transmission loss and 6 dB down bandwidth achieved were 0.64 dB/km and 57 MHz at 1.3 ¿m, respectively.
Keywords :
germanium compounds; optical fibres; silicon compounds; vapour deposition; 1.3 micron operation; 21.2 km fibre; 6 dB down bandwidth 57 MHz; SiO2-GeO2 optical fibres; fibre fabrication; graded index optical fibre; transmission loss 0.64 dB/km; vapour phase axial deposition;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800111
