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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Equivariant techniques in Chromatic homotopy theory
色度 同伦理论 等变技术
2023/5/15
Chromatic homotopy theory uses the algebraic geometry of smooth 1-parameter formal groups to separate stable homotopy theory into periodic layers. The 1st layer recovers the image of Adams’ J homomorp...
Temporal coupled mode theory for thermal emission from a single thermal emitter supporting either a single mode or an orthogonal set of modes
Temporal coupled thermal emission single thermal emitter supporting either
2015/8/7
We propose a temporal coupled mode theory for thermal emission from a single emitter supporting either a single mode or an orthogonal set of modes. This temporal coupled mode theory provides analytic ...
Metamaterial band theory:fundamentals & applications
metamaterials photonic band theory plasmonics sensing active metamaterials
2015/8/7
Remarkable progress has been made over the past decade in controlling light propagation and absorption in compact devices using nanophotonic structures and metamaterials. From sensing and modulation,t...
Analysis of As2S3-Ti: LiNbO3 Taper Couplers Using Supermode Theory
Optical Waveguides Couplers Coupled Mode Analysis
2013/1/30
In this work, we develop a simulation method based on supermode theory and transfer matrix formalism, and then apply it to the analysis and design of taper couplers for vertically integrated As2S3 and...
From Electromagnetically Induced Transparency to Superscattering with a Single Structure: A Coupled-Mode Theory for Doubly Resonant Structures
Electromagnetically Induced Transparency Superscattering Single Structure Coupled-Mode Theory Doubly Resonant Structures
2015/8/7
We observe from simulations that a doubly resonant structure can exhibit spectral behavior analogous to electromagnetically induced transparency, as well as superscattering, depending on the excitatio...
Temporal coupled-mode theory for light scattering by an arbitrarily shaped object supporting a single resonance
Temporal coupled-mode theory light scattering single resonance
2015/8/7
We develop a temporal coupled-mode theory to describe the interaction of plane wave with an individual scatterer having an arbitrary shape. The theory involves the expansion of the fields on cyl...
Perturbation theory for plasmonic modulation and sensing
Perturbation theory plasmonic modulation sensing
2015/8/10
We develop a general perturbation theory to treat small parameter changes in dispersive plasmonic nanostructures and metamaterials. We specifically apply it to dielectric refractive index and me...
Microscopic theory of photonic one-way edge mode
Microscopic theory photonic one-way edge mode
2015/8/10
We consider a system consisting of a honeycomb lattice of magneto-optical resonators. We show that this system can be very well described by a tight-binding model. Moreover, when truncated, this syste...
Nanophotonic light-trapping theory for solar cells
Nanophotonic light-trapping theory solar cells
2015/8/10
Conventional light-trapping theory, based on a ray-optics approach, was developed for standard thick photovoltaic cells. The classical theory established an upper limit for possible absorption enhance...
PON Test Systems–From theory to field deployments
field deployments theory PON Test Systems
2015/5/18
This paper presents the first feedback from field experiments of remote fiber testing systems using U band, new High Resolution OTDR and Out-of-band reflective markers installed on the ONT side.
Temporal Coupled-Mode Theory for Fano Resonance in Light Scattering by a Single Obstacle
Temporal Coupled-Mode Theory Fano Resonance Light Scattering Single Obstacle
2015/8/10
We present a theory for Fano interference in light scattering by individual obstacle, based on a temporal coupled-mode formalism. This theory is applicable for obstacles that are much smaller than the...
Temporal coupled-mode theory for resonant apertures
Temporal coupled-mode theory resonant apertures
2015/8/10
We develop the coupled-mode theory for nanoscale resonant apertures. We show that the maximum transmission and absorption cross sections for subwavelength resonant apertures are only related to the wa...
Propagation of electromagnetic waves in weakly anisotropic media:Theory and applications
quasi-isotropic approximation polarization
2011/5/9
Quasi-isotropic approximation (QIA) of geometrical optics is outlined, which describes properties
of electromagnetic waves in weakly anisotropic media, including weakly anisotropic fibers, liquid
cr...
Theory of single-photon transport in a single-mode waveguide. I. Coupling to a cavity containing a two-level atom
single-photon transport single-mode waveguide cavity containing two-level atom
2015/8/10
The single-photon transport in a single-mode waveguide, coupled to a cavity embedded with a two-level atom, is analyzed. The single-photon transmission and reflection amplitudes, as well as the ...
Theory of single-photon transport in a single-mode waveguide. II. Coupling to a whispering gallery resonator containing a two-level atom
single-photon transport single-mode waveguide gallery resonator containing two-level atom
2015/8/10
We analyze the single-photon transport in a single-mode waveguide coupled to a whispering-gallery-type resonator interacting with a two-level atom. The single-photon transport properties such as the t...