The Experts below are selected from a list of 33867 Experts worldwide ranked by ideXlab platform
Sergey I Bozhevolnyi - One of the best experts on this subject based on the ideXlab platform.
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Loss Compensation in long range dielectric loaded surface plasmon polariton waveguides
3rd International Conference on Metamaterials Photonic Crystals and Plasmonics META 2012, 2012Co-Authors: Sonia M Garciablanco, Markus Pollnau, Sergey I BozhevolnyiAbstract:Loss Compensation in long-range dielectric loaded surface plasmon polariton (LR-DLSPP) waveguides has been theoretically studied. Rare-earth-ion-doped potassium double tungstates have been proposed as gain materials because of the elevated gain that they can provide, together with a favorable refractive index. The effect of the waveguide geometry on Loss Compensation efficiency was thoroughly studied. A material gain as low as 12.5 dB/cm was found to suffice to achieve full Loss Compensation in an optimized structure.
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Loss Compensation in long range dielectric loaded surface plasmon polariton waveguides
Optics Express, 2011Co-Authors: Sonia M Garciablanco, Markus Pollnau, Sergey I BozhevolnyiAbstract:Loss Compensation in long-range dielectric-loaded surface plasmon-polariton waveguides is theoretically analyzed when rare-earth-doped double tungstate crystalline material is used as the gain medium in three different waveguide configurations. We study the effect of waveguide geometry on Loss Compensation at the telecom wavelength of 1.55 μm, and demonstrate that a material gain as small as 12.5 dB/cm is sufficient for Lossless propagation of plasmonic modes with sub-micron lateral confinement when using waveguide ridges with gain.
Sonia M Garciablanco - One of the best experts on this subject based on the ideXlab platform.
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Loss Compensation in long range dielectric loaded surface plasmon polariton waveguides
3rd International Conference on Metamaterials Photonic Crystals and Plasmonics META 2012, 2012Co-Authors: Sonia M Garciablanco, Markus Pollnau, Sergey I BozhevolnyiAbstract:Loss Compensation in long-range dielectric loaded surface plasmon polariton (LR-DLSPP) waveguides has been theoretically studied. Rare-earth-ion-doped potassium double tungstates have been proposed as gain materials because of the elevated gain that they can provide, together with a favorable refractive index. The effect of the waveguide geometry on Loss Compensation efficiency was thoroughly studied. A material gain as low as 12.5 dB/cm was found to suffice to achieve full Loss Compensation in an optimized structure.
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Loss Compensation in long range dielectric loaded surface plasmon polariton waveguides
Optics Express, 2011Co-Authors: Sonia M Garciablanco, Markus Pollnau, Sergey I BozhevolnyiAbstract:Loss Compensation in long-range dielectric-loaded surface plasmon-polariton waveguides is theoretically analyzed when rare-earth-doped double tungstate crystalline material is used as the gain medium in three different waveguide configurations. We study the effect of waveguide geometry on Loss Compensation at the telecom wavelength of 1.55 μm, and demonstrate that a material gain as small as 12.5 dB/cm is sufficient for Lossless propagation of plasmonic modes with sub-micron lateral confinement when using waveguide ridges with gain.
Markus Pollnau - One of the best experts on this subject based on the ideXlab platform.
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Loss Compensation in long range dielectric loaded surface plasmon polariton waveguides
3rd International Conference on Metamaterials Photonic Crystals and Plasmonics META 2012, 2012Co-Authors: Sonia M Garciablanco, Markus Pollnau, Sergey I BozhevolnyiAbstract:Loss Compensation in long-range dielectric loaded surface plasmon polariton (LR-DLSPP) waveguides has been theoretically studied. Rare-earth-ion-doped potassium double tungstates have been proposed as gain materials because of the elevated gain that they can provide, together with a favorable refractive index. The effect of the waveguide geometry on Loss Compensation efficiency was thoroughly studied. A material gain as low as 12.5 dB/cm was found to suffice to achieve full Loss Compensation in an optimized structure.
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Loss Compensation in long range dielectric loaded surface plasmon polariton waveguides
Optics Express, 2011Co-Authors: Sonia M Garciablanco, Markus Pollnau, Sergey I BozhevolnyiAbstract:Loss Compensation in long-range dielectric-loaded surface plasmon-polariton waveguides is theoretically analyzed when rare-earth-doped double tungstate crystalline material is used as the gain medium in three different waveguide configurations. We study the effect of waveguide geometry on Loss Compensation at the telecom wavelength of 1.55 μm, and demonstrate that a material gain as small as 12.5 dB/cm is sufficient for Lossless propagation of plasmonic modes with sub-micron lateral confinement when using waveguide ridges with gain.
Y Imai - One of the best experts on this subject based on the ideXlab platform.
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Loss compensated distributed baseband amplifier ic s for optical transmission systems
IEEE Transactions on Microwave Theory and Techniques, 1996Co-Authors: Shunji Kimura, Y Imai, Y Umeda, T EnokiAbstract:We describe a distributed baseband amplifier using a new Loss Compensation technique for the drain artificial line. The new Loss Compensation circuit improves a high-frequency performance of the amplifier and makes the gain bandwidth product of the amplifier larger than that of conventional ones. We also use dc matching terminations and dumping resistors for the gate and drain artificial lines to obtain flat gain from frequencies as low as 0 Hz. One IC fabricated using 0.1 /spl mu/m-gatelength InAlAs/InGaAs/InP HEMTs has a gain of 16 dB over a 0-to-50 GHz band, resulting in a gain bandwidth product of about 300 GHz. Another IC has a gain of 10 dB over a 0-to-90 GHz band. These are the highest gain bandwidth product and the widest band reported for baseband amplifier ICs applicable to optical transmission systems.
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0 40 ghz gaas mesfet distributed baseband amplifier ics for high speed optical transmission
IEEE Transactions on Microwave Theory and Techniques, 1996Co-Authors: Shunji Kimura, Y ImaiAbstract:We describe distributed amplifiers built using advanced circuit design techniques to improve gain and noise performance at low frequencies. Using these techniques we have developed an amplifier IC with a 0-36 GHz bandwidth and a noise figure of 4 dB at low frequencies. This frequency range starting from 0 Hz makes it possible to use the IC as a baseband amplifier for SDH optical transmission systems and this noise figure is about 1 dB better than conventional distributed amplifiers. We also present another amplifier IC built using our Loss Compensation technique to improve high-frequency performance of the amplifier. This IC has a 0-44-GHz bandwidth, which is the widest among all reported GaAs MESFET baseband amplifiers.
Xiang Zhang - One of the best experts on this subject based on the ideXlab platform.
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optical Loss Compensation in a bulk left handed metamaterial by the gain in quantum dots
Applied Physics Letters, 2010Co-Authors: Zhenggao Dong, Hui Liu, Z H Zhu, Shuming Wang, Jing Xiao Cao, Shining Zhu, Xiang ZhangAbstract:A bulk left-handed metamaterial with fishnet structure is investigated to show the optical Loss Compensation via surface plasmon amplification with the assistance of the gain medium of PbS quantum dots. Simultaneously negative permittivity and permeability are confirmed at the telecommunication wavelength (1.5 μm) by the retrieval of the effective electromagnetic property. The dependence of enhanced transmission on the gain coefficient, as well as on the propagation layers, demonstrates that ultralow Loss is feasible in bulk left-handed metamaterials.
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optical Loss Compensation in a bulk left handed metamaterial by the gain in quantum dots
arXiv: Optics, 2009Co-Authors: Zhenggao Dong, Hui Liu, Z H Zhu, Shuming Wang, Jing Xiao Cao, Shining Zhu, Xiang ZhangAbstract:A bulk left-handed metamaterial with fishnet structure is investigated to show the optical Loss Compensation via surface plasmon amplification, with the assistance of a Gaussian gain in PbS quantum dots. The optical resonance enhancement around 200 THz is confirmed by the retrieval method. By exploring the dependence of propagation Loss on the gain coefficient and metamaterial thickness, we verify numerically that the left-handed response can endure a large propagation thickness with ultralow and stable Loss under a certain gain coefficient.
