Results 91 to 100 of about 1,015,748 (173)
Parallel Multi‐Target Detection for Quantum LiDAR
Laser &Photonics Reviews, EarlyView.Parallel multi‐target detection is achieved in quantum LiDAR with a single‐pixel quantum readout. Direction and distance information are extracted together, allowing multiple objects to be distinguished under noisy low‐light conditions and pointing to a new strategy for scan‐free quantum remote sensing.
Junyeop Kim +4 more
wiley +1 more source
A Novel Simulator of Nonstationary Random MIMO Channels in Rayleigh Fading Scenarios
International Journal of Antennas and Propagation, 2016 For simulations of nonstationary multiple-input multiple-output (MIMO) Rayleigh fading channels in time-variant scattering environments, a novel channel simulator is proposed based on the superposition of chirp signals. This new method has the advantages
Qiuming Zhu +4 more
doaj +1 more source
IEEE Photonics Journal, 2018 We discuss a four-state chirp-control scheme using a dual-electrode Mach–Zehnder modulator to compensate dispersion-induced RF power fading when employing direct-detection-based orthogonal-frequency-division-multiplexed (OFDM) signals.
Shota Ishimura, Kosuke Nishimura
doaj +1 more source
Robust chirp parameter estimation for Hann windowed signals
, 2012 [[abstract]]The sinusoidal model has been a fundamentally important signal representation for coding and analysis of audio. We present an enhancement to sinusoidal modeling in the form of a linear frequency chirp parameter estimator applicable to Hann ...
Aaron Master;Yi-Wen Liu
core +1 more source
Filtering in the joint time/chirp-rate domain for separation of quadratic and cubic phase chirp signals [PDF]
, 2012 WOS: 000306697500001This article investigates the possibility and convenience of a filtering operation in the joint time/chirp-rate (TCR) domain, and proposes a novel linear TCR filter for decomposing multicomponent signals into their quadratic and/or ...
Özgen, Mehmet Tankut +1 more
core +2 more sources
Laser &Photonics Reviews, EarlyView.Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi +5 more
wiley +1 more source
Noise Suppression via Gain‐Dispersion‐Managed Nonlinear Amplification in a High‐Power Er‐Fiber Laser
Laser &Photonics Reviews, EarlyView.Gain‐dispersion‐managed nonlinear pre‐amplification simultaneously suppresses phase and intensity noise, enabling scalable high‐power fiber amplification. The system delivers 102.3 W linearly polarized pulses with 1.19 µJ energy at 85.69 MHz and compresses them to 380 fs. Near‐linear power scaling without evident saturation highlights a practical route
Mei Yang +9 more
wiley +1 more source
PhotonicsThis paper proposes a distributed vibration sensing system based on dual-chirped pulses and weak fiber Bragg gratings. Compared with conventional dual-pulse heterodyne detection techniques, the proposed approach utilizes the time-frequency ...
Huanyu Pu +3 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.A novel optical platform integrates a Sagnac‐based interferometer with a high‐brightness multiple‐plate continuum source to advance two‐dimensional electronic spectroscopy. The robust system delivers octave‐spanning, 3.7‐femtosecond pulses and achieves intrinsic attosecond‐level phase stability without active feedback.
Wei‐Chung Feng +5 more
wiley +1 more source
stablemarkets/ChiRP: Initial Release
, 2019 <p>This is the initial release of <code>ChiRP</code>. Users can expect a stable public API. Additional changes to API are anticipated to be backwards compatible:</p> <ul> <li>Providing additional optional parameters to
Arman Oganisian
core +1 more source