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
Highly-efficient grating couplers based on transfer-printing technology
TL;DR: In this article, the authors proposed an apodized, partially etched, grating coupler integrated with a directional coupler implemented in amorphous Si, while a crystalline 220nm Silicon-on-Insulator (SOI) platform is used for the target PIC.
Proceedings ArticleDOI
Silicon nano grid waveguide for coupling between multimode fiber (MMF) and silicon nano waveguide
Shinmo An,El-Hang Lee +1 more
TL;DR: In this article, a new silicon waveguide configuration is presented, which enables a mode field expansion more than several tens of micrometers and maintains singlemode operation condition and gradient index profile for compensating a misalignment in fiber coupling.
Proceedings ArticleDOI
Silicon Nitride Grating Couplers with High Efficiency and Wide Bandwidth
TL;DR: In this article, a grating coupler for coupling vertically emitted laser light into planar silicon nitride waveguides was presented and the waveguide coupling efficiency was measured at 30% with a 3-dB bandwidth of 100 nm using an optical fiber.
Scalable and efficient grating couplers on low-index photonic platforms enabled by cryogenic deep silicon etching
TL;DR: In this paper , a flexible strategy for the realization of highly efficient fiber-to-chip couplers on low-index photonic platforms is presented. But the authors do not consider the use of self-imaging gratings designed with negative diffraction angle.
Journal ArticleDOI
Design of a Completely Vertical, Polarization-Independent Two-Dimensional Grating Coupler with High Coupling Efficiency
TL;DR: In this paper , a two-dimensional grating coupler based on a silicon-on-insulator platform was proposed to obtain completely vertical and polarization-independent couplings, which potentially ease the difficulty of packaging and measurement of photonic integrated circuits.
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.