Share Email Print
cover

Proceedings Paper

Fiber-chip coupling with silicon microlenses
Author(s): Christoph Waechter; Tino Benkenstein; Bernd Hoefer; Andre Matthes; Dirk Michaelis
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Direct coupling from fibres to waveguides requires field matching to achieve high coupling efficiency. 3D on-chip tapers are well suited in principle, but practicability may depend on materials and geometrical structures used for the waveguide chip, especially when photonic crystal defect waveguides are involved. To adapt the spot size of the fibre mode to that of a waveguide with high index contrast, silicon micro-lenses can be used advantageously. Although positioning requires finer resolution with small foci this can be accomplished by state-of-the-art micro-positioning equipment. A theoretical description of the hybrid coupling concept and corresponding numerical results are presented, where the design covers the range from free-space ray-trace to FDTD at the chip-level. Experimental results for the characterisation of the optimised aspheric silicon micro-lenses are reported as well.

Paper Details

Date Published: 31 March 2005
PDF: 6 pages
Proc. SPIE 5728, Integrated Optics: Devices, Materials, and Technologies IX, (31 March 2005); doi: 10.1117/12.590812
Show Author Affiliations
Christoph Waechter, Fraunhofer-Institut fuer Optik und Feinmechanik (Germany)
Tino Benkenstein, Fraunhofer-Institut fuer Optik und Feinmechanik (Germany)
Bernd Hoefer, Fraunhofer-Institut fuer Optik und Feinmechanik (Germany)
Andre Matthes, Fraunhofer-Institut fuer Optik und Feinmechanik (Germany)
Dirk Michaelis, Fraunhofer-Institut fuer Optik und Feinmechanik (Germany)


Published in SPIE Proceedings Vol. 5728:
Integrated Optics: Devices, Materials, and Technologies IX
Yakov Sidorin; Christoph A. Waechter, Editor(s)

© SPIE. Terms of Use
Back to Top