Title :
Double-flame VAD process for high-rate optical preform fabrication
Author :
Suda, H. ; Shibata, Satoshi ; Nak, M.
Author_Institution :
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Abstract :
High-rate deposition techniques for the VAD process have been developed by increasing the size of synthesised fine glass particles by means of a new `double-flame burner¿. VAD core preforms have been increased to 2500 g in size, from which a 580 km-length fibre with 50 ¿m core diameter can be drawn. A deposition rate of 4.5 g/min from one burner has been attained. Fibres from high-rate deposited preforms exhibit transmission losses of 0.62 dB/km at 1.3 ¿m and 0.44 dB/km at 1.55 ¿m.
Keywords :
chemical vapour deposition; optical fibres; optical workshop techniques; VAD process; core diameter; deposition rate; deposition techniques; double-flame burner; high-rate optical preform fabrication; optical fibres; synthesised fine glass particles; transmission losses;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850023
