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Radiation loss of coupled-resonator waveguides in photonic-crystal slabs
Radiation loss coupled-resonator waveguides photonic-crystal slabs
2015/8/11
The authors characterize the intrinsic radiation loss of coupled-resonator optical waveguides by defining a waveguide-quality factor Q. They find that tuning an isolated resonator in a pho...
The modelling of high-contrast photonic crystal slabs using the novel extension of the effective index method
photonic crystal slabs effective index method
2011/4/28
This paper presents a new approach to determination of the band structure in two-dimensional (2D) photonic crystal slabs using the enhanced effective index approximation. The proposed method remains v...
Photonic crystal slabs demonstrating strong broadband suppression of transmission in the presence of disorders
Photonic crystal slabs strong broadband suppression transmission disorders
2015/8/11
We characterize the transmission spectra of out-of-plane, normal-incidence light of two-dimensional silicon photonic crystal slabs and observe excellent agreement between the measured data and finite-...
Demonstration of systematic photonic crystal device design and optimization by low-rank adjustments: an extremely compact mode separator
systematic photonic crystal device design xtremely compact mode separator
2015/8/11
We present a powerful design and optimization method for devices in a photonic crystal. The method is based on a Wannier basis field expansion and efficient matrix analysis techniques for searching th...
Coupled optical and electronic simulations of electrically pumped photonic-crystal-based light-emitting diodes
Coupled optical electronic simulations electrically pumped light-emitting diodes
2015/8/11
We use coupled optical and electronic simulations to investigate design trade-offs in electrically pumped photonic-crystal-based light-emitting diodes. A finite-difference frequency-domain elect...
Photonic crystal device sensitivity analysis with Wannier basis gradients
Photonic crystal device sensitivity analysis Wannier basis gradients
2015/8/11
We present a powerful sensitivity analysis method for devices in a photonic crystal. The method is based on a Wannier basis field expansion and efficient matrix analysis techniques for finding eigenva...
Metallic photonic crystals with strong broadband absorption at optical frequencies over wide angular range
Metallic photonic crystals broadband absorption optical frequencies
2015/8/11
We show theoretically that a finite two-dimensional square lattice of metallic cylinders in air can be designed to have almost 100% absorptance over a wide optical wavelength range and for a wid...
Magneto-optical defects in two-dimensional photonic crystals
Magneto-optical defects two-dimensional photonic crystals
2015/8/11
Magneto-optical defects in two-dimensional photonic crystals.
Dynamic Photonic Structures:Stopping,Storage,and Time Reversal of Light
Dynamic Photonic Structures Stopping Storage Time Reversal of Light
2015/8/11
The use of dynamic photonic structures opens fascinating new possibilities for controlling the properties of light. The general idea is to create a coupled resonator array such that a light pulse can ...
Optical circulators in two-dimensional magneto-optical photonic crystals
Optical circulators two-dimensional magneto-optical photonic crystals
2015/8/11
We propose an optical circulator formed of a magneto-optical cavity in a 2D photonic crystal. With spatially engineered magnetic domain structures, the cavity can be designed to support a pair of coun...
Tunable terahertz Bloch oscillations in chirped photonic crystals
Tunable terahertz Bloch oscillations chirped photonic crystals
2015/8/11
We report simulations showing tunable terahertz oscillations of the electromagnetic field provided by the Bloch oscillations of a short photonic wave packet in a tilted band structure. The struc...
Displacement sensing using evanescent tunneling between guided resonances in photonic crystal slabs
Displacement sensing evanescent tunneling between guided resonances photonic crystal slabs
2015/8/11
Using both analytic theory and first-principles finite-difference time-domain simulations, we introduce a displacement sensing mechanism using photonic crystal slabs coupled in the near-&#...
Wannier Basis Design and Optimization of a Photonic Crystal Waveguide Crossing
Design optimization photonic crystal (PC) devices
2015/8/11
We employ a novel platform for the realization of tunable photonic crystal (PC) circuits together with a Wannier basis modeling and optimization scheme in order to design a broad-band waveguide crossi...
Conditions for self-collimation in three-dimensional photonic crystals
self-collimation three-dimensional photonic crystals
2015/8/11
We introduce the theoretical criterion for achieving three-dimensional self-collimation of light in a photonic crystal. Based on this criterion, we numerically demonstrate a body-center-cubic structur...
Understanding Air-Core Photonic-Bandgap Fibers:Analogy to Conventional Fibers
Air-core photonic-bandgap fi bers conventional solid-core fi ber LP modes numerical aperture PBF
2015/8/11
It is shown from basic principles that the core modes of an air-core photonic-bandgap fiber (PBF) exhibit similar qualitative and quantitative behavior as the linearly polarized (LP)modes of an ...