Title :
High-efficiency fiber-to-chip coupling using low-loss tapered single-mode fiber
Author :
Alder, T. ; Stohr, A. ; Heinzelmann, R. ; Jager, D.
Author_Institution :
ZHO-Optoelektronik, Gerhard-Mercator-Univ., Duisburg, Germany
Abstract :
We report on the wet chemical fabrication of tapered step-index single-mode fibers and the low-loss coupling between these fibers and III-V semiconductor waveguide structures. Nearly adiabatic tapered fibers with an average transformation loss of 0.13 dB and mode field diameters ranging between 10.6 μm and 0.8 μm have been fabricated. Experimentally, tapered fibers have been coupled to 1.55-μm InGaAsP-InP waveguide electroabsorption modulators with a minimum coupling loss of only 1.1 dB.
Keywords :
III-V semiconductors; electro-optical modulation; electroabsorption; gallium arsenide; gallium compounds; indium compounds; optical fibre couplers; optical fibre fabrication; optical fibre losses; optical waveguide components; semiconductor devices; semiconductor heterojunctions; 0.13 dB; 1.1 dB; 1.55 mum; 10.6 to 0.8 mum; III-V semiconductor waveguide structures; InGaAsP-InP; InGaAsP-InP waveguide electroabsorption modulators; average transformation loss; high-efficiency fiber-to-chip coupling; low-loss coupling; low-loss tapered single-mode fiber; minimum coupling loss; mode field diameters; nearly adiabatic tapered fibers; tapered fibers; tapered step-index single-mode fibers; wet chemical fabrication; Chemicals; Etching; Fabrication; Lenses; Optical coupling; Optical fiber devices; Optical fiber losses; Optical modulation; Optical waveguides; Semiconductor waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
