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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TL;DR: A 1/spl times/2 all-optical packet switch is presented and the header processing is implemented by using a SLALOM structure and an optical flip-flop memory is used to store the processed headers.
Abstract: A 1/spl times/2 all-optical packet switch is presented The header processing is implemented by using a SLALOM structure and an optical flip-flop memory is used to store the processed header bits The packets are switched in wavelength by using cross-gain modulation Experimental results are presented
120 citations
Book•
01 Jan 1994
TL;DR: In this article, the GaAs MESFET was used as an optically activated switch to activate a traveling wave generator for high-power switching in a photoconductive switch.
Abstract: Linear photoconductive power switches high-speed switching in photoconductors photoconductive switch-controlled inductive pulsed-power system photoconductive switching using diamond and zinc selenide optically activated opening of copper-doped gallium arsenide switches laser diode arrays for activation of optical switches innovative switching technology the GaAs MESFET as an optically activated switch optically activated travelling wave generators high-voltage lateral switches from silicon or gallium arsenide diagnostic techniques for optically activated solid-state switches III-V-based optoelectronic devices for high-power switching.
120 citations
Patent•
01 Jun 1995TL;DR: In this paper, the authors proposed a wavelength division multiplexed optical communication system which includes an optical monitoring channel which is capable of surviving the failure of an optical amplifier, where the optical monitoring signal wavelength is selected to be greater than the longest wavelength of the first gain wavelength band such that the optical monitor signal is not substantially attenuated by an unpumped optical amplifier.
Abstract: The present invention provides a wavelength division multiplexed optical communication system which includes an optical monitoring channel which is capable of surviving the failure of an optical amplifier. The optical communication system comprises a plurality of optical transmitters which optically communicate with an optical waveguide which carries the multiplexed optical transmission signal. At least one multiple-stage optical amplifier having at least first and second stages is positioned along said optical waveguide. The optical amplifier includes a first and second stages comprising doped fibers having a first gain wavelength band. An optical connecting element having a plurality of ports is positioned between the first and second stages. At least one of an optical monitoring signal transmitter and an optical monitoring signal receiver optical communicates with at least one port of the optical connecting element such that the optical monitoring signal passes through at least one of the first and second stages of the optical amplifier. The optical monitoring signal wavelength is selected to be greater than the longest wavelength of the first gain wavelength band such that the optical monitoring signal is not substantially attenuated by an unpumped optical amplifier. Therefore, in the event of a pump failure to at least a portion of an optical amplifier, the optical monitoring signal will still be transmitted through the that portion of the amplifier without substantial attenuation. In this manner, a wavelength division multiplexed optical communication system is provided with optical monitoring channels which do not occupy a portion of the amplifier gain spectrum and which can survive the failure of an optical amplifier.
119 citations
TL;DR: InGaAsP/InP optical switches have been fabricated which use a carrier induced refractive index change as discussed by the authors, achieving power isolation of 20.5 dB in a 1mm-long device in multimode operation.
Abstract: InGaAsP/InP optical switches have been fabricated which use a carrier induced refractive index change. Switching has been achieved with a power isolation of 20.5 dB in a 1‐mm‐long device in multimode operation. This is a promising new step toward making optical integrated circuits.
119 citations
TL;DR: In this article, the realisation of a thermo-optical Mach-Zehnder interferometer switch based on SOI (silicon-on-insulator) material is reported, at a wavelength of 1.3 mu m, on-off ratios of 13 dB (TE) and 9 dB (TM) are achieved with a switching power of 150 mW.
Abstract: The realisation of a thermo-optical Mach-Zehnder interferometer switch based on SOI (silicon-on-insulator) material is reported. At a wavelength of 1.3 mu m, on-off ratios of 13 dB (TE) and 9 dB (TM) are achieved with a switching power of 150 mW. The measured rise time is 5 mu s.
119 citations