Topic
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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25 Oct 2010
TL;DR: The architecture and performance studies of Datacenter Optical Switch designed for scalable and high-throughput interconnections within a data center are discussed and it is shown that even with 2 to 4 wavelengths, the performance of DOS is significantly better than an electrical switch network based on state-of-the-art flattened butterfly topology.
Abstract: This paper discusses the architecture and performance studies of Datacenter Optical Switch (DOS) designed for scalable and high-throughput interconnections within a data center. DOS exploits wavelength routing characteristics of a switch fabric based on an Arrayed Waveguide Grating Router (AWGR) that allows contention resolution in the wavelength domain. Simulation results indicate that DOS exhibits lower latency and higher throughput even at high input loads compared with electronic switches or previously proposed optical switch architectures such as OSMOSIS [4, 5] and Data Vortex [6, 7]. Such characteristics, together with very high port count on a single switch fabric make DOS attractive for data center applications where the traffic patterns are known to be bursty with high temporary peaks [13]. DOS exploits the unique characteristics of the AWGR fabric to reduce the delay and complexity of arbitration. We present a detailed analysis of DOS using a cycle-accurate network simulator. The results show that the latency of DOS is almost independent of the number of input ports and does not saturate even at very high (approx 90%) input load. Furthermore, we show that even with 2 to 4 wavelengths, the performance of DOS is significantly better than an electrical switch network based on state-of-the-art flattened butterfly topology.
240 citations
TL;DR: The switching device comprises a compact ring resonator formed by horizontal silicon slot waveguides filled with highly nonlinear silicon nanocrystals in silica that performs about 1 order of magnitude faster than previous approaches on silicon.
Abstract: We demonstrate experimentally all-optical switching on a silicon chip at telecom wavelengths. The switching device comprises a compact ring resonator formed by horizontal silicon slot waveguides filled with highly nonlinear silicon nanocrystals in silica. When pumping at power levels about 100 mW using 10 ps pulses, more than 50% modulation depth is observed at the switch output. The switch performs about 1 order of magnitude faster than previous approaches on silicon and is fully fabricated using complementary metal oxide semiconductor technologies.
239 citations
TL;DR: An overview of recent progress in PLC technology including optical power splitters, arrayed-waveguide gratings, thermooptic switches, and hybrid integrated PLC's can be found in this article.
Abstract: Silica-based planar lightwave circuits (PLC) provide various important devices for both optical wavelength-division-multiplexing networks and optical access network. This paper is an overview of recent progress in PLC technology including optical power splitters, arrayed-waveguide gratings, thermooptic switches, and hybrid integrated PLC's.
238 citations
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15 Sep 2008
TL;DR: An Introduction to Chalcogenide Glasses and Experimental Techniques to Measure Nonlinear Optical Constants is given in this article, along with a discussion of the issues and future directions.
Abstract: An Introduction to Chalcogenide Glasses.- Basic Concepts of Nonlinear Optics.- Experimental Techniques to Measure Nonlinear Optical Constants.- Measurement of Nonlinear Optical Constants.- Optical Nonlinearities in Chalcogenide Fibres.- Optical Switching in Chalcogenide Glasses.- Issues and Future Directions.
238 citations
TL;DR: In this article, the first demonstration of a nonlinear coupler switch capable of substantially complete all-optical switching at sub-picosecond rates with no light-induced thermal effects is presented.
Abstract: We report the first demonstration of a nonlinear coupler switch capable of substantially complete all‐optical switching at subpicosecond rates with no light‐induced thermal effects.
238 citations