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
Ultra-broadband silicon polarization splitter-rotator based on the multi-mode waveguide.
Hongnan Xu,Yaocheng Shi +1 more
TL;DR: An ultra-broadband polarization splitter-rotator (PSR) on the Silicon-On-Insulator (SOI) platform that consists of a straight multi-mode waveguide, an asymmetrical directional coupler and a bent directional couplers is proposed and demonstrated.
Journal ArticleDOI
Tuning of silicon-on-insulator ring resonators with liquid crystal cladding using the longitudinal field component.
TL;DR: Tuning of the resonance wavelength of silicon-on-insulator microring resonators with liquid crystal cladding with a tuning range of 0.6 nm is shown.
Journal ArticleDOI
Simultaneous measurement of refractive index and temperature using a dual polarization ring.
Penghao Liu,Yaocheng Shi +1 more
TL;DR: The feasibility of obtaining RI and temperature simultaneously with a single measurement is demonstrated, achieving a RI sensitivity of 104 nm/RIU (refractive index unit) and a temperature sensitivity of 34.1 pm/°C for TM0 mode.
Journal ArticleDOI
Optical Differential-Phase-Shift-Keying Demodulation Using a Silicon Microring Resonator
TL;DR: In this paper, an ultrasmall, low power penalty, and robust 10 Gb/s differential phase shift-keying demodulator using a silicon-based microring resonator was demonstrated.
Journal ArticleDOI
Two dimensional silicon waveguide chirped grating couplers for vertical optical fibers
Xia Chen,Chao Li,Hon Ki Tsang +2 more
TL;DR: In this article, a linear chirp in the grating period for two-dimensional grating couplers was proposed to suppress the second-order back reflection in a silicon-on-insulator nanophotonic waveguide.
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.