Title :
Uncladded InGaAsP/InP rib waveguides with integrated thickness tapers for efficient fibre-chip butt coupling
Author :
Morl, L. ; Weinert, C.M. ; Reier, F. ; Stoll, L. ; Nolting, H.-P.
Author_Institution :
Heinrich-Hertz-Inst. fur Nachrichtentech. Berlin GmbH, Germany
fDate :
1/4/1996 12:00:00 AM
Abstract :
The thickness of the waveguide core of uncladded InGaAsP/InP rib waveguides is tapered to fabricate new spot-size transformers without epitaxial regrowth or etching of deep grooves. The coupling loss for flat-end fibres is reduced by 7 dB at alignment tolerances of >±2.0μm for 1 dB excess loss
Keywords :
III-V semiconductors; gallium arsenide; indium compounds; optical fibre couplers; optical losses; optical planar waveguides; rib waveguides; 1 dB; InGaAsP-InP; alignment tolerances; coupling loss; excess loss; fibre-chip butt coupling; flat-end fibres; integrated thickness tapers; spot-size transformers; uncladded rib waveguides; waveguide core thickness;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960059
