Journal ArticleDOI
Compact efficient broadband grating coupler for silicon-on-insulator waveguides.
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TLDR
A high-efficiency broadband grating coupler for coupling between silicon-on-insulator (SOI) waveguides and optical fibers and the size of the grooves is optimized numerically.Abstract:
We have designed a high-efficiency broadband grating coupler for coupling between silicon-on-insulator (SOI) waveguides and optical fibers. The grating is only 13 µm long and 12 µm wide, and the size of the grooves is optimized numerically. For TE polarization the coupling loss to single-mode fiber is below 1 dB over a 35-nm wavelength range when using SOI with a two-pair bottom reflector. The tolerances to fabrication errors are also calculated.read more
Citations
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Journal ArticleDOI
Grating-Based Optical Fiber Interfaces for Silicon-on-Insulator Photonic Integrated Circuits
Gunther Roelkens,Diedrik Vermeulen,Shankar Kumar Selvaraja,Robert Halir,Wim Bogaerts,D. Van Thourhout +5 more
TL;DR: In this paper, the authors review the work on efficient interfaces between a silicon-on-insulator photonic IC and a single-mode optical fiber based on grating structures and present several device configurations that provide high efficiency, polarization insensitive, and broadband optical coupling on a small footprint.
Journal ArticleDOI
Second harmonic generation in phase matched aluminum nitride waveguides and micro-ring resonators
TL;DR: Using sputter-deposited aluminum nitride thin films, a second order nonlinear susceptibility (χ2) of 4.7 ± 1.7 µm/V was obtained in this paper.
Journal ArticleDOI
High-efficiency grating-couplers: demonstration of a new design strategy.
Riccardo Marchetti,Cosimo Lacava,Ali Z. Khokhar,Xia Chen,Ilaria Cristiani,David J. Richardson,Graham T. Reed,Periklis Petropoulos,Paolo Minzioni +8 more
TL;DR: These results represent the best performance ever reported in the literature for SOI structures without the use of any back-reflector.
Journal ArticleDOI
Low-loss amorphous silicon-on-insulator technology for photonic integrated circuitry
Shankar Kumar Selvaraja,Erik Sleeckx,Marc Schaekers,Wim Bogaerts,Dries Van Thourhout,Pieter Dumon,Roel Baets +6 more
TL;DR: In this article, the fabrication of low-loss amorphous silicon photonic wires deposited by plasma enhanced chemical vapor deposition was reported, which achieved propagation loss of 3.46 and 1.34 dB/cm for ridge waveguides.
Journal ArticleDOI
Polarization beam splitter using a binary blazed grating coupler.
Junbo Feng,Zhiping Zhou +1 more
TL;DR: A novel polarization beam splitter using a two-layer grating coupler that can directly couple the normally incident light from fiber into two separate waveguides according to their polarization states while splitting them is proposed and demonstrated.
References
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Journal Article
Electromagnetic Optimization by Genetic Algorithms
TL;DR: This book describes numerous applications of genetic algorithms to the design and optimization of various low- and high-frequency electromagnetic components and provides a comprehensive list of the up-to-date references applicable to electromagneticdesign problems.
Journal ArticleDOI
Ultra-low loss photonic integrated circuit with membrane-type photonic crystal waveguides
TL;DR: The combination of an efficient two-stage coupling scheme and utilization of ultra-long (up to 2mm) photonic crystal waveguides reduces the uncertainty in determining the loss figure to 3dB/cm.
Journal ArticleDOI
An out-of-plane grating coupler for efficient butt-coupling between compact planar waveguides and single-mode fibers
Dirk Taillaert,Wim Bogaerts,Peter Bienstman,Thomas F. Krauss,P. Van Daele,Ingrid Moerman,Steven Verstuyft,K. De Mesel,Roel Baets +8 more
TL;DR: In this paper, an out-of-plane coupler for butt-coupling from fiber to compact planar waveguides is proposed based on a short second-order grating or photonic crystal, etched in a waveguide with a low-index oxide cladding.
Journal ArticleDOI
Low loss mode size converter from 0.3 [micro sign]m square Si wire waveguides to singlemode fibres
TL;DR: In this article, a novel integrated mode size converter for single-mode Si wire waveguides is presented, which is constructed with two-dimensional tapered Si waveguide and overlaid high-index polymer waveguide.
Journal ArticleDOI
Optical modelling of photonic crystals and VCSELs using eigenmode expansion and perfectly matched layers
Peter Bienstman,Roel Baets +1 more
TL;DR: In this paper, a modeling approach for photonic crystal structures and vertical-cavity surface-emitting lasers (VCSELs) is presented based on vectorial eigenmode expansion combined with perfectly matched layer (PML) boundary conditions.