Results 21 to 30 of about 517,913 (266)
IEEE Photonics Journal, 2022 In this paper, we propose a novel carrier-less amplitude/phase modulation with probabilistic shaping based on the Lorenz model and superposition method (LS-PS-CAP).
Yu Gu +8 more
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IEEE Photonics Journal, 2021 Power scaling of continuous-wave, narrow-linewidth fiber lasers are limited by the onset of stimulated Brillouin scattering (SBS) which manifests at threshold as potentially damaging, peak power, backward propagating pulses.
Roopa Prakash +2 more
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A 4-Element Digital Modulated Polar Phased-Array Transmitter With Phase Modulation Phase-Shifting [PDF]
IEEE Journal of Solid-State Circuits, 2021 A novel architecture of a digital modulated polar phased-array transmitter with phase modulation (PM) phase-shifting and feed-forward controlled dynamic matching (FFCDM) is presented in this article. Phase-shifting in a PM signal path is utilized in each element, which shares many components including a phase modulator, baseband, and IF components. The
Huizhen Jenny Qian +3 more
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Design and generation of structured array beams with shape-invariant properties
New Journal of Physics, 2023 We theoretically propose and experimentally demonstrate a flexible approach to generate an arbitrary shape-invariant structured array beam during propagation with the prescribed intensity distribution.
Yuqiu Zhang +7 more
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Large Phase-by-Phase Modulations in Atomic Interfaces [PDF]
Physical Review Letters, 2015 Phase-resonant closed-loop optical transitions can be engineered to achieve broadly tunable light phase shifts. Such a novel phase-by-phase control mechanism does not require a cavity and is illustrated here for an atomic interface where a classical light pulse undergoes radian level phase modulations all-optically controllable over a few micron scale.
Artoni M, Zavatta A
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Compensation of nonlinear self-phase modulation with phase modulators
Electronics Letters, 2002 The compensation of the nonlinear self-phase modulation of a 10 Gbit/s RZ data stream with phase modulators has been experimentally demonstrated. The electrical waveform that drives the phase modulators is synthesised from the recovered 10 GHz clock and its 20 GHz harmonic.
C. Xu, L. Mollenauer, Xiang Liu
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Phase Modulation of Retro-Reflected Radar Echo Signal Using a Microstrip Van-Atta Array
IEEE Access, 2019 Van-atta array is able to retro-reflect the incident signal back to the income direction and, thus, it can maintain a relatively larger radar cross-section (RCS) in a large range of incidence angles.
Kunpeng Song +4 more
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Single-Shot Compressed Imaging via Random Phase Modulation
Applied Sciences, 2022 Compressed sensing (CS) provides an innovative framework for signal sampling, which enables accurate recovery of the sparse or compressible signal from a small set of linear measurements far fewer than the Nyquist rate in traditional signal processing ...
Cheng Zhang +5 more
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A New Method for Total Fat Detection in Raw Milk Based on Dual Low-Coherence Interferometer
Sensors, 2019 The present work experimentally demonstrates a multimode fiber optic sensing setup for total fat detection in raw milk samples. The optical fiber arrangement incorporates a low-coherence Fabry−Perot cavity operating in dual response.
Abraham Gastélum-Barrios +4 more
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Cross-phase modulation imaging [PDF]
Optics Letters, 2012 We demonstrate a cross-phase modulation measurement technique based on the sensitive detection of modulation transfer in a pump-probe setup. By modulating the amplitude of the pump beam and spectrally analyzing the probe beam, we achieve a rapid, background-free measurement of nonlinear phase modulation using power levels acceptable in biological ...
Prathyush, Samineni +4 more
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