A simple image-reject mixer based on two parallel phase modulators
Sign Up to like & getrecommendations! Published in 2018 at "Optical Review"
DOI: 10.1007/s10043-017-0400-5
Abstract: A simple photonic microwave image-reject mixer (IRM) using two parallel phase modulators is proposed. First, a photonic microwave mixer with phase shift ability is achieved using two parallel phase modulators (PMs), an optical bandpass filter,… read more here.
Keywords: phase; phase modulators; parallel phase; image reject ... See more keywords
Electro-optical Amplitude and Phase Modulators Based on Tunable Guided-Mode Resonance Effect
Sign Up to like & getrecommendations! Published in 2019 at "ACS Photonics"
DOI: 10.1021/acsphotonics.9b00950
Abstract: Here, electrically tunable amplitude and phase modulators are designed by the hybridization of indium tin oxide (ITO) into a guided-mode resonance mirror (so-called GMRM) which consists of a high-index silicon (Si) nanograting placed on top… read more here.
Keywords: mode resonance; phase modulators; amplitude phase; guided mode ... See more keywords
Graphene–silicon phase modulators with gigahertz bandwidth
Sign Up to like & getrecommendations! Published in 2018 at "Nature Photonics"
DOI: 10.1038/s41566-017-0071-6
Abstract: The modulator is a key component in optical communications. Several graphene-based amplitude modulators have been reported based on electro-absorption. However, graphene phase modulators (GPMs) are necessary for functions such as applying complex modulation formats or… read more here.
Keywords: phase modulators; phase; photonics; graphene silicon ... See more keywords
Intensity and Phase Modulators at 1.55 μm in GaAs/AlGaAs Layers Directly Grown on Silicon
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2863208
Abstract: We report for the first-time electro-optic phase and amplitude modulators in GaAs/AlGaAs epitaxial layers grown on misaligned silicon substrates containing germanium buffer layers. Epilayer has a npin doping profile and is equivalent to a pin… read more here.
Keywords: phase; intensity phase; modulators gaas; phase modulators ... See more keywords
Graphene-Based Silicon Photonic Electro-Absorption Modulators and Phase Modulators
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Journal of Selected Topics in Quantum Electronics"
DOI: 10.1109/jstqe.2024.3411058
Abstract: Since their first demonstration, graphene-based silicon waveguide modulators have evolved towards very attractive devices for adoption in future optical interconnects. In this paper, we first review state-of-the-art for graphene-based intensity modulators. Two important device configurations… read more here.
Keywords: graphene based; silicon photonic; phase modulators; based silicon ... See more keywords
A Planar Time-Modulated Array With Integrated 2-bit Phase Modulators
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2024.3385485
Abstract: In this communication, the implementation and experimental validation of harmonic beamforming in a planar 2-bit time-modulated array (TMA) is proposed. The incorporation of a 2-bit phase modulators effectively enhances the complex architecture, substantial dimensions, and… read more here.
Keywords: modulated array; time modulated; time; bit ... See more keywords
Linewidth-related residual intensity modulation in lithium niobate phase modulators.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.388681
Abstract: We present a modified model for residual intensity modulation (RIM) observed in lithium niobate phase modulators, which is suitable for both narrow linewidth and wide linewidth lasers. This model is based on two key points… read more here.
Keywords: intensity modulation; lithium niobate; residual intensity; niobate phase ... See more keywords
Dynamic phase measurement of fast liquid crystal phase modulators.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.460083
Abstract: We present dynamic time-resolved measurements of a multi-pixel analog liquid crystal phase modulator driven at a 1 kHz frame rate. A heterodyne interferometer is used to interrogate two pixels independently and simultaneously, to deconvolve phase… read more here.
Keywords: phase measurement; crystal phase; liquid crystal; phase ... See more keywords
Monolithic integration of polymer waveguide phase modulators with silicon nitride waveguides using adiabatic transition tapers.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.479614
Abstract: Polymer waveguide phase modulators (PMs) demonstrate high thermal confinement with outstanding thermo-optic properties and can provide stable low-power phase modulation in optical phased arrays (OPA). On the other hand, silicon nitride (SiN) waveguides produce stronger… read more here.
Keywords: silicon nitride; polymer; waveguide phase; polymer waveguide ... See more keywords
Modal Phase Modulators Based on Liquid Crystals with 3D-Printed Polymer Microstructures: Increasing Size and Complexity
Sign Up to like & getrecommendations! Published in 2024 at "Photonics"
DOI: 10.3390/photonics11030266
Abstract: We present extended capabilities in simple liquid crystal-based devices that are applicable to adaptive optics and other related fields requiring wavefront manipulation. The laser-written devices can provide complex phase profiles, but are extremely simple to… read more here.
Keywords: modal phase; device; phase modulators; modulators based ... See more keywords