The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Andrey A. Sukhorukov - One of the best experts on this subject based on the ideXlab platform.
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Slow-light enhanced optical Forces between longitudinally shifted photonic-crystal nanowire waveguides
Optics Letters, 2012Co-Authors: Thomas P. White, Andrey A. SukhorukovAbstract:We reveal that slow-light enhanced optical Forces between side-coupled photonic-crystal nanowire waveguides can be flexibly controlled by introducing a relative longitudinal shift. We predict that close to the photonic band edge, where the group velocity is reduced, the Transverse Force can be tuned from repulsive to attractive, and the Force is suppressed for a particular shift value. Additionally the shift leads to symmetry breaking that can facilitate longitudinal Forces acting on the waveguides, in contrast to unshifted structures where such Forces vanish.
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Slow-light enhanced optomechanical interactions
Proceedings of SPIE, 2012Co-Authors: Andrey A. Sukhorukov, Thomas P. WhiteAbstract:We discuss potential advantages of slow-light waveguides compared to cavity-based structures for enhancing opto-mechanical interactions. Then, we reveal that slow-light enhanced optical Forces between side-coupled photonic-crystal nanowire waveguides can be flexibly controlled by introducing a relative longitudinal shift. We predict that close to the photonic band-edge, where the group velocity is reduced, the Transverse Force can be tuned from repulsive to attractive, and the Force is suppressed for a particular shift value. Additionally the shift leads to symmetry breaking that can facilitate longitudinal Forces acting on the waveguides, in contrast to unshifted structures where such Forces vanish.
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Slow-light enhanced optomechanical interactions between shifted photonic-crystal waveguides
Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011, 2011Co-Authors: Thomas P. White, Andrey A. SukhorukovAbstract:We investigate slow light enhanced optical Forces between parallel periodic waveguides when one waveguide is shifted longitudinally relative to the other. We show that changes to the waveguide symmetry properties can modify the Transverse Force from repulsive to attractive while also introducing a longitudinal Force which is absent in unshifted structures.
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Slow-Light Enhanced Optical Forces between Shifted Photonic-Crystal Nanowire Waveguides
Nonlinear Optics, 2011Co-Authors: Thomas P. White, Andrey A. SukhorukovAbstract:We reveal that slow-light enhanced optical Forces between side-coupled photonic-crystal waveguides strongly depend on a longitudinal shift, facilitating Transverse Force tuning from repulsive to attractive and enabling longitudinal Force which is absent in unshifted structures.
Thomas P. White - One of the best experts on this subject based on the ideXlab platform.
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Slow-light enhanced optical Forces between longitudinally shifted photonic-crystal nanowire waveguides
Optics Letters, 2012Co-Authors: Thomas P. White, Andrey A. SukhorukovAbstract:We reveal that slow-light enhanced optical Forces between side-coupled photonic-crystal nanowire waveguides can be flexibly controlled by introducing a relative longitudinal shift. We predict that close to the photonic band edge, where the group velocity is reduced, the Transverse Force can be tuned from repulsive to attractive, and the Force is suppressed for a particular shift value. Additionally the shift leads to symmetry breaking that can facilitate longitudinal Forces acting on the waveguides, in contrast to unshifted structures where such Forces vanish.
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Slow-light enhanced optomechanical interactions
Proceedings of SPIE, 2012Co-Authors: Andrey A. Sukhorukov, Thomas P. WhiteAbstract:We discuss potential advantages of slow-light waveguides compared to cavity-based structures for enhancing opto-mechanical interactions. Then, we reveal that slow-light enhanced optical Forces between side-coupled photonic-crystal nanowire waveguides can be flexibly controlled by introducing a relative longitudinal shift. We predict that close to the photonic band-edge, where the group velocity is reduced, the Transverse Force can be tuned from repulsive to attractive, and the Force is suppressed for a particular shift value. Additionally the shift leads to symmetry breaking that can facilitate longitudinal Forces acting on the waveguides, in contrast to unshifted structures where such Forces vanish.
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Slow-light enhanced optomechanical interactions between shifted photonic-crystal waveguides
Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011, 2011Co-Authors: Thomas P. White, Andrey A. SukhorukovAbstract:We investigate slow light enhanced optical Forces between parallel periodic waveguides when one waveguide is shifted longitudinally relative to the other. We show that changes to the waveguide symmetry properties can modify the Transverse Force from repulsive to attractive while also introducing a longitudinal Force which is absent in unshifted structures.
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Slow-Light Enhanced Optical Forces between Shifted Photonic-Crystal Nanowire Waveguides
Nonlinear Optics, 2011Co-Authors: Thomas P. White, Andrey A. SukhorukovAbstract:We reveal that slow-light enhanced optical Forces between side-coupled photonic-crystal waveguides strongly depend on a longitudinal shift, facilitating Transverse Force tuning from repulsive to attractive and enabling longitudinal Force which is absent in unshifted structures.
Hwa-yaw Tam - One of the best experts on this subject based on the ideXlab platform.
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Maximum amplification of a string Transverse-Force amplifier in fiber Bragg grating accelerometers
OSA Continuum, 2019Co-Authors: Tommy H.t. Chan, Man Hong Yau, David Thambiratnam, Hwa-yaw TamAbstract:Fiber Bragg grating (FBG) accelerometers using Transverse Forces are very sensitive. When a Transverse Force is applied to a lightly stretched string fixed by its two ends, a much stronger axial Force along the string will be induced. So, the Transverse Force is amplified and converted into the axial Force. At a given pre-strain of the string, the maximum amplification and requirements to obtain it have not been clearly demonstrated. Here, we theoretically prove and experimentally verify that the maximum amplification occurs when the strain induced by the Transverse Force approximately equals the pre-strain. This revelation improves the understanding of FBG accelerometers using Transverse Forces.
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Fiber Bragg grating strain modulation based on nonlinear string Transverse-Force amplifier.
Optics letters, 2013Co-Authors: Kuo Li, Man Hong Yau, David Thambiratnam, Tommy H.t. Chan, Hwa-yaw TamAbstract:The only effective method of fiber Bragg grating (FBG) strain modulation has been by changing the distance between its two fixed ends. We demonstrate an alternative that is more sensitive to Force based on the nonlinear amplification relationship between a Transverse Force applied to a stretched string and its induced axial Force. It may improve the sensitivity and size of an FBG Force sensor, reduce the number of FBGs needed for multiaxial Force monitoring, and control the resonant frequency of an FBG accelerometer.
Shun-qing Shen - One of the best experts on this subject based on the ideXlab platform.
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Spin Transverse Force and quantum Transverse transport
International Journal of Modern Physics B, 2008Co-Authors: Bin Zhou, Shun-qing ShenAbstract:We present a brief review on spin Transverse Force, which exerts on the spin as the electron is moving in an electric field. This Force, analogue to the Lorentz Force on electron charge, is perpendicular to the electric field and spin current carried by the electron. The Force stems from the spin-orbit coupling of electrons as a relativistic quantum effect, and could be used to understand the Zitterbewegung of electron wave packet and the quantum Transverse transport of electron in a heuristic way.
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spin Transverse Force on spin current in an electric field
Physical Review Letters, 2005Co-Authors: Shun-qing ShenAbstract:As a relativistic quantum mechanical effect, it is shown that the electron field exerts a Transverse Force on an electron spin $1/2$ only if the electron is moving. The spin Force, analogue to the Lorentz for an electron charge in a magnetic field, is perpendicular to the electric field and the spin current whose spin polarization is projected along the electric field. This spin-dependent Force can be used to understand the Zitterbewegung of the electron wave packet with spin-orbit coupling and is relevant to the generation of the charge Hall effect driven by the spin current in semiconductors.
Tommy H.t. Chan - One of the best experts on this subject based on the ideXlab platform.
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Maximum amplification of a string Transverse-Force amplifier in fiber Bragg grating accelerometers
OSA Continuum, 2019Co-Authors: Tommy H.t. Chan, Man Hong Yau, David Thambiratnam, Hwa-yaw TamAbstract:Fiber Bragg grating (FBG) accelerometers using Transverse Forces are very sensitive. When a Transverse Force is applied to a lightly stretched string fixed by its two ends, a much stronger axial Force along the string will be induced. So, the Transverse Force is amplified and converted into the axial Force. At a given pre-strain of the string, the maximum amplification and requirements to obtain it have not been clearly demonstrated. Here, we theoretically prove and experimentally verify that the maximum amplification occurs when the strain induced by the Transverse Force approximately equals the pre-strain. This revelation improves the understanding of FBG accelerometers using Transverse Forces.
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Fiber Bragg grating strain modulation based on nonlinear string Transverse-Force amplifier.
Optics letters, 2013Co-Authors: Kuo Li, Man Hong Yau, David Thambiratnam, Tommy H.t. Chan, Hwa-yaw TamAbstract:The only effective method of fiber Bragg grating (FBG) strain modulation has been by changing the distance between its two fixed ends. We demonstrate an alternative that is more sensitive to Force based on the nonlinear amplification relationship between a Transverse Force applied to a stretched string and its induced axial Force. It may improve the sensitivity and size of an FBG Force sensor, reduce the number of FBGs needed for multiaxial Force monitoring, and control the resonant frequency of an FBG accelerometer.
