scholarly journals Strong Nonreciprocal Radiation in a InAs Film by Critical Coupling with a Dielectric Grating

2021 ◽  
Author(s):  
Xiaohu Wu ◽  
◽  
Zhaoxian Chen ◽  
Feng Wu ◽  
◽  
...  
Keyword(s):  
Critical Coupling ◽  
Dielectric Grating

scholarly journals Critical behavior of the 2d scalar theory: resumming the N8LO perturbative mass gap

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Gustavo O. Heymans ◽  
Marcus Benghi Pinto
Keyword(s):  
Perturbation Theory ◽  
Critical Behavior ◽  
State Of The Art ◽  
Critical Coupling ◽  
Scalar Theory ◽  
Perturbative Series ◽  
Supercritical Region ◽  
Mass Gap ◽  
Perturbative Result ◽  
Symmetric Phase

Abstract We apply the optimized perturbation theory (OPT) to resum the perturbative series describing the mass gap of the bidimensional ϕ4 theory in the ℤ2 symmetric phase. Already at NLO (one loop) the method is capable of generating a quite reasonable non-perturbative result for the critical coupling. At order-g7 we obtain gc = 2.779(25) which compares very well with the state of the art N8LO result, gc = 2.807(34). As a novelty we investigate the supercritical region showing that it contains some useful complimentary information that can be used in extrapolations to arbitrarily high orders.

scholarly journals High-Q-Factor Tunable Silica-Based Microring Resonators

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 256
Author(s):  
Yue-Xin Yin ◽  
Xiao-Pei Zhang ◽  
Xiao-Jie Yin ◽  
Yue Li ◽  
Xin-Ru Xu ◽  
...  
Keyword(s):  
Optical Communications ◽  
Microring Resonator ◽  
Microring Resonators ◽  
Q Factor ◽  
Notch Depth ◽  
Critical Coupling ◽  
Practical Application ◽  
Coupling Condition ◽  
High Q ◽  
Racetrack Resonator

A high-Q-factor tunable silica-based microring resonator (MRR) is demonstrated. To meet the critical-coupling condition, a Mach–Zehnder interferometer (MZI) as the tunable coupler was integrated with a racetrack resonator. Then, 40 mW electronic power was applied on the microheater on the arm of MZI, and a maximal notch depth of about 13.84 dB and a loaded Q factor of 4.47 × 106 were obtained. The proposed MRR shows great potential in practical application for optical communications and integrated optics.

Quasi‐Bound States in the Continuum with Temperature‐Tunable Q Factors and Critical Coupling Point at Brewster's Angle

2021 ◽  
pp. 2000290
Author(s):  
Bing‐Ru Wu ◽  
Jhen‐Hong Yang ◽  
Pavel S. Pankin ◽  
Chih‐Hsiang Huang ◽  
Wei Lee ◽  
...  
Keyword(s):  
Bound States ◽  
Critical Coupling ◽  
Coupling Point ◽  
Q Factors ◽  
The Continuum

scholarly journals Diffraction-induced enhancement of optical spin Hall effect in a dielectric grating

APL Photonics ◽  
2020 ◽  
Vol 5 (6) ◽  
pp. 066106
Author(s):  
Minkyung Kim ◽  
Dasol Lee ◽  
Byoungsu Ko ◽  
Junsuk Rho
Keyword(s):  
Hall Effect ◽  
Spin Hall Effect ◽  
Dielectric Grating

Flat dielectric grating focusing lens with TE-polarized incident light

2013 ◽  
Author(s):  
Ting Ma ◽  
Xiao-dong Yuan ◽  
Wei-min Ye ◽  
Wei Xu
Keyword(s):  
Incident Light ◽  
Dielectric Grating ◽  
Focusing Lens

A simple analysis procedure for dielectric grating antennas of finite width

2005 ◽  
Author(s):  
S. Peng ◽  
M. Shiau ◽  
A. Oliner ◽  
J. Borowick ◽  
W. Bayha ◽  
...  
Keyword(s):  
Analysis Procedure ◽  
Finite Width ◽  
Simple Analysis ◽  
Dielectric Grating
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