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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23 Mar 1999TL;DR: In this article, the shape of the lens arrays of a liquid crystal projector was shown to be similar to those for light utilization of a red-light-transmission liquid crystal panel.
Abstract: A liquid crystal projector having a simple optical system and operating at a high efficiency of use of light, comprises a light-emitting device (50), a parallel transforming optical system (60), an optical switch (70), and a display optical system (80). The light-emitting device (50) includes LD arrays (51, 52, 53) where semiconductor lasers (54) are arranged two-dimensionally. The output beams from the semiconductor lasers (54) are transformed into parallel beams by means of the lens arrays (61, 62, 63). Since the output beams from the semiconductor lasers (54) are linearly P- or S-polarized, no polarization transforming optical system is needed. By adequately combining semiconductor lasers (54), the shapes of the LD arrays (51, 52, 53) can be the same as those for light utilization of a red-light transmission liquid crystal panel (71), a green-light transmission liquid crystal panel (72), and a blue-light transmission liquid crystal panel (73).
72 citations
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11 Mar 2002TL;DR: In this article, a high reliable optical switch and optical waveguide apparatus are obtained, which can perform stable and reliable ON/OFF operations for optical connection at a waveguide crossing portion.
Abstract: Highly reliable optical switch and optical waveguide apparatus are obtained, which can perform stable and reliable ON/OFF operations for optical connection at a waveguide crossing portion. The optical switch is provided in an optical waveguide apparatus including a waveguide propagating light and a waveguide housing sheet enclosing the waveguide, and includes a slit portion slitting to traverse the waveguide; a driver performing driving action onto the slit portion; and a driver assistant member interposing the slit portion between the driver assistant member and the driver to assist the driver, the driver and driver assistant member pushing open the slit portion to provide a gap, and bring the slit portion into contact to connect waveguides.
72 citations
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TL;DR: In this article, highly confined photonic structures are used for tailoring the optical mode of the structures and enhancing the electro-optical and nonlinear properties of silicon, and high fibre to waveguide coupling efficiency and optical switching on-chip with very low powers.
Abstract: Optics on a silicon chip provides a new platform for the monolithic integration of optics and microelectronics and can open the door to a new technology that is free from conventional microelectronics. However, the difficulty in controlling light and diverting its path on silicon needs to be addressed before this technology can successfully be used to resolve current microelectronics bottlenecks. Here we use highly confined photonic structures for tailoring the optical mode of the structures and enhancing the electro-optical and nonlinear properties of silicon. We show high fibre to waveguide coupling efficiency and optical switching on-chip with very low powers.
72 citations
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TL;DR: It is shown that switching action takes place at a power of a fraction of 1 mW, which provides a practical means of fabricating an all-optical fiber switch.
Abstract: We report the theoretical and experimental investigation of switching in a nonlinear twin-core erbium-doped fiber coupler. It is shown that switching action takes place at a power of a fraction of 1 mW. Thus it provides a practical means of fabricating an all-optical fiber switch.
72 citations
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29 Jan 2018TL;DR: In this paper, wave-guided 2 × 2 and N × M photonic switches are reviewed, including both broadband and narrowband resonant devices for the Si, InP, and AlN platforms.
Abstract: Recent developments in waveguided 2 × 2 and N × M photonic switches are reviewed, including both broadband and narrowband resonant devices for the Si, InP, and AlN platforms Practical actuation of switches by electro-optical and thermo-optical techniques is discussed Present datacom-and-computing applications are reviewed, and potential applications are proposed for chip-scale photonic and optoelectronic integrated switching networks Potential is found in the reconfigurable, programmable “mesh” switches that enable a promising group of applications in new areas beyond those in data centers and cloud servers Many important matrix switches use gated semiconductor optical amplifiers The family of broadband, directional-coupler 2 × 2 switches featuring two or three side-coupled waveguides deserves future experimentation, including devices that employ phase-change materials The newer 2 × 2 resonant switches include standing-wave resonators, different from the micro-ring traveling-wave resonators The res
72 citations