We propose and demonstrate an overall non-mechanical spectrally steered laser rangefinder using the dispersion-tuned swept (DTSL) a passive diffractive element. The DTSL has no mechanical moving parts, making it possible to achieve inertial-free high wavelength sweeping speed. inherent intensity-modulation characteristic of allows modulation phase-shift method be applied, similar that used for ...

In this paper, we propose an optical millimetre wave radio-over-fibre (mm-wave RoF) system that uses a dual drive Mach Zehnder modulator (DD-MZM), which is biased at the maximum transmission biasing point, to generate an optical double sideband-suppressed carrier. The input to the DD-MZM are binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 8-phase shift keying (8-PSK) and...

Reconfigurable intelligent surfaces (RISs) have drawn significant attention due to their capability of controlling the radio environment and improving system performance. In this paper, we study performance an RIS-assisted single-input single-output over Rayleigh fading channels. Differently from previous works that assume a constant reflection amplitude, consider model accounts for intertwinem...

We derive evolution equations for the first and second moments of an initially mismatched, coupled, displaced arbitrary Gaussian phase-space distribution under influence decoherence due to amplitude-dependent tune shift. Moreover, we find expressions asymptotic values beam matrix emittance use them evaluate error tolerances injection.

Analysis of cerebral autoregulation by measuring spontaneous oscillations in the low frequency spectrum of cerebral cortical vessels might be a useful tool for assessing risk and investigating different treatment strategies in carotid artery disease and stroke. Near infrared spectroscopy (NIRS) is a non-invasive optical method to investigate regional changes in oxygenated (oxyHb) and deoxygenat...

Head-on collision and overtaking collision between a KdV solitary wave and an envelope solitary wave are first studied in present paper by using Particle-in-cell (PIC) method in a dusty plasma. There are phase shifts of the KdV solitary wave in both head-on collision and the overtaking collision, while no phase shift is found for the envelop solitary wave in any cases. The remarkable difference...

The amplitude of low-field nuclear magnetic resonance (NMR) is weak, and the echo is buried in the noise. The reduction of noise is critical to accurately extract echo amplitude. Phase correction-adaptive line enhancement (PC-ALE) is proposed to noise suppression based on the principle of ALE and NMR spin-echo characteristics. The echo amplitude is calculated after two-stage processes; phase sh...