Critical Coupling and Perfect Absorption Using α‐MoO3 Multilayers in the Mid‐Infrared
Sign Up to like & getrecommendations! Published in 2021 at "Annalen der Physik"
DOI: 10.1002/andp.202000512
Abstract: α‐Phase molybdenum trioxide(α‐MoO3) is a biaxial van der Waals semiconductor that can naturally support anisotropic phonon polaritons with elliptic and hyperbolic in‐plane dispersion. α‐MoO3 can meet critical coupling (CC) condition for both transverse magnetic (TM)… read more here.
Keywords: perfect absorption; mid infrared; critical coupling; coupling perfect ... See more keywords
Optimum light transmission via microring resonator under a lossy‐coupler critical coupling condition
Sign Up to like & getrecommendations! Published in 2020 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32601
Abstract: The optical transfer function is derived for add‐drop resonator (ADR) using the signal flow graph method. A critical coupling condition is calculated in the presence of loss in the coupling regions. Effect of critical coupling… read more here.
Keywords: transmission; coupling condition; critical coupling; light transmission ... See more keywords
All-Si photodetector for telecommunication wavelength based on subwavelength grating structure and critical coupling
Sign Up to like & getrecommendations! Published in 2017 at "AIP Advances"
DOI: 10.1063/1.4995700
Abstract: We propose an efficient planar all-Si internal photoemission photodetector operating at the telecommunication wavelength of 1550 nm and numerically investigate its optical and electrical properties. The proposed polarization-sensitive detector is composed of an appropriately engineered… read more here.
Keywords: subwavelength grating; critical coupling; photodetector; grating structure ... See more keywords
Effects of stressor characteristics on early warning signs of critical transitions and "critical coupling" in complex dynamical systems.
Sign Up to like & getrecommendations! Published in 2017 at "Chaos"
DOI: 10.1063/1.5008315
Abstract: Complex dynamical systems face abrupt transitions into unstable and catastrophic regimes. These critical transitions are triggered by gradual modifications in stressors, which push the dynamical system towards unstable regimes. Bifurcation analysis can characterize such critical… read more here.
Keywords: critical coupling; system; warning signs; early warning ... See more keywords
Multiple-band enhanced light absorption of monolayer graphene with critical coupling to guided mode resonance
Sign Up to like & getrecommendations! Published in 2018 at "AIP Advances"
DOI: 10.1063/1.5048973
Abstract: We investigate subwavelength grating-coupled distributed Bragg reflector (DBR) in order to achieve total absorption at preselected wavelengths in a graphene monolayer. Multispectral and near-unity absorption (approximately 99.44% of the incident light at normal incidence) can… read more here.
Keywords: absorption; critical coupling; graphene; guided mode ... See more keywords
A graphical approach to estimate the critical coupling strength for Kuramoto networks.
Sign Up to like & getrecommendations! Published in 2019 at "Chaos"
DOI: 10.1063/1.5084063
Abstract: The Kuramoto model is an archetypal model for studying synchronization in groups of nonidentical oscillators. Each oscillator is imbued with its own personal inherent driving frequency and experiences attractive coupling forces toward all the other… read more here.
Keywords: critical coupling; coupling; approach; kuramoto ... See more keywords
Design Method of Three-Coil WPT System Based on Critical Coupling Conditions
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2019.2917708
Abstract: It is well known that the power transfer efficiency (PTE) of a two-coil wireless power transfer (WPT) system is maximized at critical coupling under fixed system parameters. However, the two-coil WPT system is critical-coupled with… read more here.
Keywords: coil wpt; wpt system; critical coupling; wpt ... See more keywords
Ultra-Sensitive Absorption-Based Gas Detecting Using Graphene-Covered Periodic Photonic Crystal Slabs Resonating Under Critical Coupling Condition at Mid-Infrared Frequencies
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on NanoBioscience"
DOI: 10.1109/tnb.2022.3172558
Abstract: In this paper, a novel chemical sensor is presented based on graphene deposited on the periodic pattern of the photonic crystal. The sensor structure is very simple to fabricate. Also, the proposed sensor thickness in… read more here.
Keywords: graphene; photonic crystal; mid infrared; critical coupling ... See more keywords
Critical coupling vortex with grating-induced high Q-factor optical Tamm states.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.416132
Abstract: We investigate optical Tamm states supported by a dielectric grating placed on top of a distributed Bragg reflector. It is found that under certain conditions the Tamm state may become a bound state in the… read more here.
Keywords: critical coupling; tamm states; coupling vortex; optical tamm ... See more keywords
Combined role of polarization matching and critical coupling in enhanced absorption of 2D materials based on metamaterials.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.419028
Abstract: Since 2D materials are typically much more efficient to absorb in-plane polarized light than out-of-plane polarized light, keeping the light polarization in-plane at the 2D material is revealed to be a crucial factor other than… read more here.
Keywords: plane; critical coupling; polarization; material ... See more keywords
Critical coupling and extreme confinement in nanogap antennas.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.004761
Abstract: Nanogap antennas are compelling structures for squeezing light into ultrasmall volumes. However, when gaps are shrunk to the nanometer scale, the mode losses dramatically increase. In this Letter, we report the conditions of critical coupling… read more here.
Keywords: critical coupling; mode; nanogap antennas; extreme confinement ... See more keywords