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
Perpendicular Grating Coupler Based on a Blazed Antiback-Reflection Structure
TL;DR: In this paper, a vertical grating coupler with high directionality and low back-reflection was realized using a blazed subwavelength structure, and the measured maximum coupling efficiencies with a standard single-mfiber were −1.5 dB and −2.2 dB for apodized and periodic structures, respectively.
Journal ArticleDOI
Efficient, broadband and compact metal grating couplers for silicon-on-insulator waveguides.
Stijn Scheerlinck,Jonathan Schrauwen,Frederik Van Laere,Dirk Taillaert,Dries Van Thourhout,Roel Baets +5 more
TL;DR: Metal grating couplers for Silicon-on-Insulator waveguides with 33% coupling efficiency are proposed and fabricated using Focused Ion Beams demonstrating over 10% coupling Efficiency.
Journal ArticleDOI
The evolution of silicon photonics as an enabling technology for optical interconnection
TL;DR: An attempt is made to demonstrate that the integration of photonic and electronic functionality on a silicon substrate has the potential to propel communication beyond the Terabit per second threshold in a widely deployable paradigm.
Journal ArticleDOI
Beyond 30% Conversion Efficiency in Silicon Solar Cells: A Numerical Demonstration.
Sayak Bhattacharya,Sajeev John +1 more
TL;DR: Flexible, thin-film solar cells, consisting of crystalline silicon, to achieve power conversion efficiency of 31% and front and back surface fields provided by optimized Gaussian doping profiles are shown to play a vital role in enhancing surface passivation.
Journal ArticleDOI
Packaging Process for Grating-Coupled Silicon Photonic Waveguides Using Angle-Polished Fibers
Bradley Snyder,Peter O'Brien +1 more
TL;DR: In this paper, a fiber-packaging submicrometer silicon waveguides are presented, which uses fibers polished at an angle to reflect light between a horizontal core and the slightly off-vertical input and output path of a grating coupler.
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.