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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Proceedings ArticleDOI
Integration of Ball Lens in Through-Package Via to Enable Photonic Chip-to-Board Coupling
TL;DR: In this article, a method to integrate a silicon photonic chip, ball lens embedded package substrate and board-level polymer multimode waveguides has been demonstrated, and a measured 14 micrometre chip-to-package 1dB lateral alignment tolerance for coupling into a 20x24 micrometers squared cross-section board-Level PWM waveguide was obtained at a wavelength of 1310 nm.
Proceedings ArticleDOI
Subwavelength and diffractive waveguide structures and their applications in nanophotonics and sensing
Pavel Cheben,Przemek J. Bock,Przemek J. Bock,Przemek J. Bock,Jens H. Schmid,Jean Lapointe,Siegfried Janz,Dan-Xia Xu,Rubin Ma,Adam Densmore,André Delâge,Boris Lamontagne,Trevor J. Hall,Robert Halir,Íñigo Molina-Fernández,J-M. Fedeli +15 more
TL;DR: In this article, the subwavelength grating (SWG) effect was used to make efficient waveguide crossings with minimal loss and negligible crosstalk in planar waveguides.
Journal ArticleDOI
Apodized fully-etched surface grating coupler using subwavelength structure for standard silicon-on-insulator waveguide
Jing Xu,Xin Jin,Yanli Zhao +2 more
TL;DR: In this paper, a fully-etched apodized grating coupler based on the silicon-on-insulator (SOI) platform using subwavelength structure for both transverse electric (TE) and transverse magnetic (TM) modes operation is presented.
Journal ArticleDOI
Design of free-standing GaN strip waveguide and grating couplers
TL;DR: In this article, a GaN-based fully cut through planar photonic device was presented, where waveguide, grating couplers and supporting structure were designed by analytical calculation and finite element method (FEM) simulation.
Dissertation
Photonic Reflectometer on Silicon-on-Insulator
TL;DR: In this paper, a photonic reflectometer on Silicon-on-Insulator (SOSI) is designed and experimentally characterized, and a six-port device composed of multimode interference couplers (MMIs) is presented.
References
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Electromagnetic Optimization by Genetic Algorithms
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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.