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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Papers
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01 Jan 2004
TL;DR: In this article, a general concept for the design of all-optical wavelength converters with pulse reformatting functionality is introduced and a microelectromechanical system-based realization is shown and simultaneous 40 Gb/s wavelength conversion, switching and signal format conversion is demonstrated.
Abstract: We introduce a general concept for the design of all-optical wavelength converters with pulse reformatting functionality. The novel wavelength converters are based on a single semiconductor optical amplifier followed by an optical filter. A microelectromechanical system-based realization is shown and simultaneous 40 Gb/s wavelength conversion, switching and signal format conversion is demonstrated. The new pulse reformatting optical filter device outperforms current schemes with respect to input-power requirements, input-power dynamic range and signal quality.
129 citations
17 Mar 2001
TL;DR: It is demonstrated the interest of multi-granularity optical networks to decrease the number of ports for the optical switching matrices by grouping some wavelengths into bands and some bands into fibers at some intermediate nodes.
Abstract: We demonstrate the interest of multi-granularity optical networks to decrease the number of ports for the optical switching matrices by grouping some wavelengths into bands and some bands into fibers at some intermediate nodes.
129 citations
TL;DR: In this article, a tunable infrared modulator and/or switch using intersubband Stark shift in a step quantum well is discussed, which utilizes the inter-band absorption and the large change of separation between energy levels under an applied electric field.
Abstract: A tunable infrared modulator and/or switch using intersubband Stark shift in a step quantum well is discussed. The device utilizes the intersubband absorption and the large change of separation between energy levels in the step quantum well under an applied electric field. The incident infrared beam on the device is either absorbed or transmitted depending on the energy separation of the levels, and thus the modulation can be achieved by adjusting the energy levels with an applied electric field. The extremely short lifetime of the intersubband transition makes this modulator suitable for application in high-speed long-wavelength optical communications. >
129 citations
TL;DR: In this article, a polymer waveguide thermooptic 2*2 switch with low electric power consumption is demonstrated, which consists of a Mach-Zehnder interferometer with thin-film heaters.
Abstract: A polymer waveguide thermooptic 2*2 switch with low electric power consumption is demonstrated. The switch consists of a Mach-Zehnder interferometer with Cr thin-film heaters. The waveguides are fabricated using acrylic polymers synthesized from deuterated methacrylate and deuterated fluoromethacrylate monomers. The total insertion loss of the switch is 0.6 dB at a wavelength of 1.3 mu m, including fiber coupling losses and waveguide losses. The switching power is as low as 4.8 mW, and the rise and fall times are both 9 ms. >
128 citations
TL;DR: In this article, an experimental evidence of mode-selective evanescent power coupling at telecommunication frequencies with efficiencies up to 75 % from a tapered optical fiber to a carefully designed metal nanoparticle plasmon waveguide is presented.
Abstract: Experimental evidence of mode-selective evanescent power coupling at telecommunication frequencies with efficiencies up to 75 % from a tapered optical fiber to a carefully designed 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.
128 citations