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Total Absorption in a Graphene Monolayer in the Optical Regime by Critical Coupling with a Photonic Crystal Guided Resonance
graphene photonic crystal near-infrared critical coupling guided resonance absorption enhancement
2015/8/6
We numerically demonstrate total absorption in graphene in the near-infrared and visible wavelength ranges by means of critical coupling with guided resonances of a photonic crystal slab. In this wave...
We consider a mirror-symmetric resonator with two ports. We show that, when excited from a single port, complete absorption can be achieved through critical coupling to degenerate resonances with oppo...
Two-photon transport through a waveguide coupling to a whispering-gallery resonator containing an atom and photon-blockade effect
Two-photon transport waveguide coupling whispering-gallery resonator containing an atom photon-blockade effect
2015/8/7
We investigate the two-photon transport through a waveguide side coupling to a whispering-gallery-atom system. Using the Lehmann-Symanzik-Zimmermann reduction approach, we present the general formula ...
Thermodynamic Upper Bound on Broadband Light Coupling with Photonic Structures
Thermodynamic Broadband Light Coupling Photonic Structures
2015/8/7
The coupling between free space radiation and optical media critically influences the performance of optical devices. We show that, for any given photonic structure, the sum of the external coup...
Optical Properties of the Coupling Interface for Planar Optical Waveguides
Planar Optical Waveguide Coupling Interface Beam Propagation Optical Property
2013/1/30
Planar optical waveguides are the key elements in a modern, high-speed optical network. An important problem facing the optical fiber communication system, specifically planar optical waveguides, is c...
High Capacity 1 Tbps (20 Gbps/ch x 24 ch x 2 layers) Multilayer Optical Printed Circuit Board with High Optical Coupling Efficiency and Low-power Transmitter Module
Printed Circuit Board oupling Efficiency Low-power Transmitter Module
2015/5/15
We developed a high-speed (20 Gbps/channel) and large-capacity (1 Tbps/board) optical printed circuit board with a proposed two-lens optical coupling structure and a low-power (7.1 mW/Gbps) optical mo...
A New Scheme of Aspherical Microlense for Efficient Coupling High-Power Lasers to Fibers
Aspherical Microlense Efficient Coupling High-Power Lasers Fibers
2015/5/14
We propose and demonstrate a new scheme of aspherical microlens (ASM) employing a single-step grinding technique with fully automated process for efficient coupling between the high-power 980-nm laser...
Quantum critical coupling conditions for zero single-photon transmission through a coupled atom-resonator-waveguide system
Quantum critical coupling conditions zero single-photon transmission coupled atom-resonator-waveguide system
2015/8/10
The quantum critical coupling conditions, where single-photon transmission goes to zero, for systems of a coupled ring resonator and atom in a one-dimensional single-mode waveguide are discussed. The ...
Characterization of structural irregularities in highly birefringent photonic crystal fiber based on polarization coupling by torsional acoustic wave
Form birefringence Fiber optics Photonic crystal fibers Acousto-optical devices
2015/6/10
We propose and demonstrate a novel method to characterize the variation of the birefringence induced by structural irregularities in highly birefringent photonic crystal fiber with high accuracy based...
Design of single-polarization single-mode photonic crystal fiber based on index-matching coupling
Fiber design and fabrications Photonic crystal fiber
2015/6/4
We propose a new design to achieve single-polarization single-mode guidance in highly birefringent photonic crystal fiber. The suppression of unwanted polarization state is realized by introducing ind...
Modal analysis and coupling in metal-insulator-metal waveguides
coupling metal-insulator-metal waveguides
2015/8/10
This paper shows how to analyze plasmonic metal-insulator-metal waveguides using the full modal structure of these guides. The analysis applies to all frequencies, particularly including the near infr...
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...
Energy Coupling Rate in Aluminum Welding by CO2 Laser and Nd:YAG Laser
Nd:YAG laser CO2 laser Coupling rate
2009/6/9
The energy coupling rate during welding of Al-Mg-Si alloys with a CO2 laser and a Nd:YAG laser was measured calorimetrically. The coupling rate obtained with the Nd:YAG laser was higher than that with...
Study on Small Vibration Sensor by Self-Coupling Effect of Semiconductor Laser
Self-coupling effect Small vibration Sensor
2009/6/1
Small vibration sensors with the laser interferometer have been developed. However, there are some disadvantages, for example, weakness to external vibration, difficulty in optical alignment, and so o...