Title :
Integration of polarisation independent mode transformers with uncladded InGaAsP/InP rib waveguides
Author :
Albrecht, P. ; Heidrich, H. ; Löffler, R. ; Mori, L. ; Reier, F. ; Weinert, C.M.
Author_Institution :
Heinrich-Hertz-Inst. fur Nachrichtentech. Berlin GmbH, Germany
fDate :
6/20/1996 12:00:00 AM
Abstract :
Polarisation independent mode transformers were fabricated by core thickness tapering in uncladded InGaAsP/InP rib waveguides intended for integration into PICs. No epitaxial regrowth is needed. The coupling loss for flat-end fibres is reduced to (2.3±0.2) dB at alignment tolerances of >±2.4 μm for 1 dB excess loss
Keywords :
III-V semiconductors; gallium arsenide; indium compounds; integrated optics; optical fibre couplers; optical fibre losses; rib waveguides; 1 dB; 2.1 to 2.5 dB; InGaAs-InP; PICs; alignment tolerances; core thickness tapering; coupling loss; excess loss; flat-end fibres; polarisation independent mode transformers; uncladded rib waveguides;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960769
