Efficient planar fiber-to-chip coupler based on two-stage adiabatic evolution
- 12 July 2010
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 18 (15) , 15790-15806
- https://doi.org/10.1364/oe.18.015790
Abstract
A new, efficient adiabatic in-plane fiber-to-chip coupler design is proposed. In this design, the light from the fiber is coupled into a low-index waveguide with matching mode size. The mode is first adiabatically reduced in size with a rib taper, and then transferred into a high-index (e.g. silicon) waveguide with an inverse taper. The two-stage design allows to reduce the coupler length multiple times in comparison with pure inverse taper-based couplers of similar efficiency. The magnitude of length reduction increases with the refractive index of the low-index waveguide and the fiber mode size.Keywords
This publication has 25 references indexed in Scilit:
- Suspended optical fiber-to-waveguide mode size converter for Silicon photonicsOptics Express, 2010
- A silicon-based spot-size converter between single-mode fibers and Si-wire waveguides using cascaded tapersApplied Physics Letters, 2007
- High performance asymmetric graded index coupler with integrated lens for high index waveguidesApplied Physics Letters, 2007
- Polarization-transparent microphotonic devices in the strong confinement limitNature Photonics, 2006
- Deeply Etched $\hbox{SiO}_{2}$ Ridge Waveguide for Sharp BendsJournal of Lightwave Technology, 2006
- Silicon-based highly-efficient fiber-to-waveguide coupler for high index contrast systemsApplied Physics Letters, 2006
- Fabrication of three-dimensional mode converters for silicon-based integrated opticsJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 2003
- Low loss mode size converter from 0.3 µm square Si wire waveguides to singlemode fibresElectronics Letters, 2002
- An out-of-plane grating coupler for efficient butt-coupling between compact planar waveguides and single-mode fibersIEEE Journal of Quantum Electronics, 2002
- Efficient coupling of a semiconductor laser to an optical fiber by means of a tapered waveguide on siliconApplied Physics Letters, 1989