Articles with "modulation depth" as a keyword



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Field enhancement assisted graphene‐based microring modulator for high modulation depth

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Published in 2020 at "Iet Optoelectronics"

DOI: 10.1049/iet-opt.2019.0170

Abstract: This study aims at optimising the graphene coverage in a microresonator for the design of an efficient modulator by using a combination of graphene induced losses and phase shift. The graphene integration in the ring… read more here.

Keywords: field enhancement; modulator; graphene; modulation depth ... See more keywords
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Solid-Electrolyte-Gated Graphene-Covered Metal-Insulator-Silicon-Insulator-Metal Waveguide With a Remarkably Large Modulation Depth

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Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2956983

Abstract: Silicon photonic modulators are an essential element in providing fast and massive connectivity to the data-centric world. Ever-increasing data usage requires them to be smaller, faster, and easier to fabricate. Graphene with exceptional properties has… read more here.

Keywords: modulation depth; graphene; waveguide; silicon ... See more keywords
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Performance Evaluation of Passive Tag to Tag Communications

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Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3149626

Abstract: In the context of the UHF (Ultra High Frequency) passive RFID (Radio Frequency Identification) technology, recent works have proposed a new paradigm demonstrating the possibility to perform short distance tag to tag (T2T) communications. This… read more here.

Keywords: evaluation; performance evaluation; tag tag; t2t ... See more keywords
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Large-Modulation-Depth Polarization-Sensitive Plasmonic Toroidal Terahertz Metamaterial

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Published in 2017 at "IEEE Photonics Technology Letters"

DOI: 10.1109/lpt.2017.2754339

Abstract: In this letter, we propose a terahertz (THz) plasmonic metamaterial based on planar metamolecule arrays with strong polarization sensitivity and large-modulation-depth for potential switching applications. Using both numerical and experimental studies, we analyzed the spectral… read more here.

Keywords: polarization sensitive; polarization; large modulation; terahertz ... See more keywords
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Improved PGC demodulation algorithm to eliminate modulation depth and intensity disturbance.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.459267

Abstract: In this paper, an improved phase generated carrier (PGC) demodulation algorithm based on frequency mixing and division difference is proposed. The effects of phase modulation depth variation and light intensity disturbance of the light source… read more here.

Keywords: demodulation; intensity disturbance; pgc demodulation; algorithm ... See more keywords
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Eliminating the influence of modulation depth by a laser interference double detection system.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.465587

Abstract: We propose a method of combining a double optical path detection system with a phase generation carrier arctangent algorithm. The feasibility of eliminating the influence of modulation depth by the double optical path detection vibration… read more here.

Keywords: system; detection; influence modulation; modulation depth ... See more keywords
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All-optical design for multiplexer and comparator utilizing hybrid plasmonic waveguides.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.474373

Abstract: Two optical combinational logic circuits, namely a 2×1 multiplexer and a comparator utilized by hybrid plasmonic waveguides, have been designed, analyzed, and simulated standing on the finite element method (FEM) with a COMSOL software package… read more here.

Keywords: comparator; plasmonic waveguides; hybrid plasmonic; multiplexer comparator ... See more keywords
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Modulation depth and bandwidth analysis of planar thermo-optic diamond actuators.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.472185

Abstract: Thermo-optic actuators based on bulk materials are considered too slow in applications such as laser frequency control. The availability of high-quality optical materials that have extremely fast thermal response times, such as diamond, present an… read more here.

Keywords: depth bandwidth; diamond; modulation depth; bandwidth analysis ... See more keywords
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High-Q multiple Fano resonances with near-unity modulation depth governed by nonradiative modes in all-dielectric terahertz metasurfaces.

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Published in 2023 at "Optics express"

DOI: 10.1364/oe.481328

Abstract: Reducing radiative losses for a high quality factor resonance based on the concept of nonradiative states including anapole mode and bound states in the continuum mode has been attracting extensive attention. However, a high quality… read more here.

Keywords: quality factor; unity modulation; modulation; modulation depth ... See more keywords
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Ameliorated PGC demodulation technique based on the ODR algorithm with insensitivity to phase modulation depth.

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Published in 2023 at "Optics express"

DOI: 10.1364/oe.482473

Abstract: For the optical fiber sensing system using phase generated carrier (PGC) technology, it is very important to eliminate the nonlinear effect of phase modulation depth (C) fluctuation on the demodulation results in the actual environment.… read more here.

Keywords: demodulation; demodulation technique; phase; modulation depth ... See more keywords
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Slow light enabled high-modulation-depth graphene modulator with plasmonic metasurfaces.

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Published in 2019 at "Optics letters"

DOI: 10.1364/ol.44.005446

Abstract: Graphene has attracted the interest of researchers seeking to develop compact optical modulators with the flexible tunability of graphene conductivity by tuning the Fermi level. Plasmonic structures have provided a robust way to enhance the… read more here.

Keywords: depth graphene; graphene; graphene modulator; modulation depth ... See more keywords