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Optical switch

About: Optical switch is a research topic. Over the lifetime, 28538 publications have been published within this topic receiving 351176 citations.


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Journal ArticleDOI
TL;DR: The design, construction, and operational testing of a five-stage, fully interconnected 32 × 16 switching fabric by the use of smart-pixel (2, 1, 1) switching nodes are described.
Abstract: The design, construction, and operational testing of a five-stage, fully interconnected 32 × 16 switching fabric by the use of smart-pixel (2, 1, 1) switching nodes are described. The arrays of switching nodes use monolithically integrated GaAs field-effect transistors, multiple-quantum-well p-i-n detectors, and self-electro-optic-device modulators. Each switching node incorporates 25 field-effect transistors and 17 diodes to realize two differential optical receivers, the 2 × 1 node switching logic, a single-bit node p-i-n control memory, and one differential optical transmitter. The five stages of node arrays are interconnected to form a two-dimensional banyan network by the use of Fourier-plane computer-generated holograms. System input and output are made by two-dimensional fiber-bundle matrices, and the system optical hardware design incorporates frequency-stabilized lasers, pupil-division beam combination, and a hybrid micro-macro lens for fiber-bundle imaging. Optomechanical packaging of the system utilizes modular kinematic component positioning and active thermal control to enable simple rapid assembly. Two preliminary operational experiments are completed. In the first experiment, five stages are operated at 50 Mbits/s with 15 active inputs and outputs. The second experiment attempts to operate two stages of second-generation node arrays at 155 Mbits/s, with eight of the 15 active nodes functioning correctly along the straight switch-routing paths.

130 citations

Journal ArticleDOI
TL;DR: In this article, population inversion and sub-Poissonian excitation statistics of two-level atoms in the context of collective resonance fluorescence were demonstrated in the photonic band gap and other confined photonic systems.
Abstract: We demonstrate population inversion and sub-Poissonian excitation statistics of $N$ two-level atoms in the context of collective resonance fluorescence. This occurs within photonic band gap and other confined photonic systems that exhibit sharp features in the optical density of states. When the deviation in the photon density of states between the Mollow spectral components is considerable, the atoms switch collectively from ground to excited states at a critical value of the applied laser field. This suggests a new mechanism of sub-Poissonian pumping of lasers, fast optical switching, and optical transistor action.

130 citations

Journal ArticleDOI
TL;DR: In this paper, a method for all-optical switching and wavelength conversion using electromagnetically induced transparency (EIT) was proposed, and the mechanism for the transfer of information in this scheme was discussed.
Abstract: We propose a method for all-optical switching and wavelength conversion using electromagnetically induced transparency (EIT). We discuss the mechanism for the transfer of information in this scheme and determine the conditions for which N×N wavelength conversion can be realized. We compare the properties and limits of an EIT-based switch to conventional wavelength converters.

130 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented experimental evidence of mode-selective evanescent power coupling at telecommunication frequencies with efficiencies up to 75% from a tapered optical fiber to a metal nanoparticle plasmon waveguide.
Abstract: Experimental evidence of mode-selective evanescent power coupling at telecommunication frequencies with efficiencies up to 75% from a tapered optical fiber to a metal nanoparticle plasmon waveguide is presented The waveguide consists of a two-dimensional square lattice of lithographically defined Au nanoparticles on an optically thin silicon membrane The dispersion and attenuation properties of the waveguide are analyzed using the fiber taper The high efficiency of power transfer into these waveguides solves the coupling problem between conventional optics and plasmonic devices and could lead to the development of highly efficient plasmonic sensors and optical switches

130 citations

Journal ArticleDOI
TL;DR: In this paper, a novel bistable optical device that exhibits differential gain and can function as an optical switch, limiter, or optical memory element is proposed and demonstrated, and the operation of the device is described.
Abstract: We propose and demonstrate the operation of a novel bistable optical device that exhibits differential gain and can function as an optical switch, limiter, or optical memory element.

130 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202395
2022282
2021383
2020557
2019624
2018665