Title :
Integrated optical modeshape adapters in InGaAsP/InP for efficient fiber-to-waveguide coupling
Author :
Brenner, T. ; Melchior, H.
Author_Institution :
Inst. for Quantum Electron., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
A concept for integrated optical modeshape adapters (IOMA´s) for efficient fiber-to-waveguide coupling is realized in InGaAsP/InP. The integrated optical modeshape adapters (IOMA´s) combine vertically tapered waveguide cores with simultaneously up-tapered upper claddings. Their OEIC-compatible fabrication process is based on diffusion-limited etching for the waveguide core tapers and selective area regrowth with LP-MOVPE for the up-tapered upper claddings, both using the same dielectric mask. First realized devices, when coupled to lensed single-mode fibers (SMF´s), show optical losses as low as 1 dB per facet at 1.53- mu m wavelength.<>
Keywords :
gallium arsenide; gallium compounds; indium compounds; integrated optics; masks; optical couplers; optical losses; optical waveguides; 1.53 mum; InGaAsP-InP; InGaAsP/InP; LP-MOVPE; OEIC-compatible fabrication; diffusion-limited etching; fiber-to-waveguide coupling; integrated optical modeshape adapters; lensed single-mode fibers (; optical losses; selective area regrowth; up-tapered upper claddings; vertically tapered waveguide cores; waveguide core tapers; Dielectrics; Etching; Indium phosphide; Integrated optics; Optical coupling; Optical device fabrication; Optical devices; Optical fiber devices; Optical fiber losses; Optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
