Journal ArticleDOI
Compact efficient broadband grating coupler for silicon-on-insulator waveguides.
Reads0
Chats0
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
More filters
Proceedings ArticleDOI
DCAF - A Directly Connected Arbitration-Free Photonic Crossbar for Energy-Efficient High Performance Computing
TL;DR: Eliminating the need for arbitration, sizing the buffers carefully and retransmitting lost packets when there is contention results in a 44% reduction in average packet latency without additional power overhead, demonstrating that the overhead required by arbitration is non-trivial, especially at high loads.
Proceedings ArticleDOI
High index contrast optical platform using gallium phosphide on sapphire: an alternative to SOI?
Donagh O'Mahony,Md. Nazmul Hossain,John Justice,Emanuele Pelucchi,Alan O'Riordan,Brendan Roycroft,Brian Corbett +6 more
TL;DR: In this article, the authors report on the design and characteristics of GaP waveguides grown on c-plane (0001) sapphire substrates using metalorganic vapour phase (MOPP) and it is shown that growth parameters such as substrate temperature and the V:III ratio have their effect on the nucleation, surface roughness and uniformity of the films.
Journal ArticleDOI
Efficient unidirectional and broadband vertical-emitting optical coupler assisted by aperture-coupled nanopatch antenna array.
TL;DR: The proposed nanopatch array features an up-to-down emission directionality up to 12.91 dBc and a wide operating bandwidth of over 400 nm simultaneously, which are promising for a range of integrated photonics applications, including inter-chip photonic interconnects, light ranging and detection, optical communications, and biological imaging.
Journal ArticleDOI
High Efficiency Silicon Edge Coupler Based On Uniform Arrayed Waveguides With Un-Patterned Cladding
TL;DR: In this article, an edge coupler for the coupling between the single mode fiber (SMF) and the silicon photonic waveguide is proposed, which can be achieved by using arrayed waveguides at 1550 nm with an unpatterned cladding.
Journal ArticleDOI
Compact and efficient fibre-to-waveguide grating couplers in InP-membrane
TL;DR: In this article, the design and fabrication of compact grating couplers in InP-membrane waveguides for coupling to standard singlemode fiber is presented, and a wafer bonding technique is applied to achieve a high vertical index contrast.
References
More filters
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.