Title :
Thermally-diffused expanded core fibres for low-loss and inexpensive photonic components
Author :
Hanafusa, H. ; Horiguchi, M. ; Noda, J.
Author_Institution :
NTT Opto-Electron. Lab., Ibaraki-ken, Japan
Abstract :
A technique is presented to locally expand the mode-field diameter of singlemode fibres. This can rapidly diffuse germanium ions into the core of silica fibres without deforming the cladding. The mode-field diameter broadens 20 mu m after 5-10 min of heating. Low-loss and inexpensive fibre-to-fibre and fibre-to-device connections are realised using the thermally-diffused expanded core fibre.
Keywords :
optical couplers; optical fibres; optical links; optical workshop techniques; thermal diffusion; SiO 2:Ge; fibre to fibre connections; fibre to the home; fibre-to-device connections; heating; local expansion; mode-field diameter; photonic components; singlemode fibres; thermally-diffused expanded core fibre;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911219