Results 11 to 20 of about 463,178 (329)

Coherent Detection of Electron Dephasing [PDF]

open access: yesPhysical Review Letters, 2010
We show that an Aharonov-Bohm (AB) ring with asymmetric electron injection can act as a coherent detector of electron dephasing. The presence of a dephasing source in one of the two arms of a moderately-to-highly asymmetric ring changes the response of the system from total reflection to complete transmission while preserving the coherence of the ...
Strambini E   +6 more
openaire   +8 more sources

An All-Digital Optical Phase-Locked Loop Suitable for Satellite Downlinks

open access: yesPhotonics, 2023
The optical signal propagation used in satellite uplinks and downlinks is influenced by absorption, scattering, and changes in the atmospheric refractive index or turbulence, causing optical signal attenuation.
Jognes Panasiewicz   +4 more
doaj   +1 more source

Integrated Components and Solutions for High-Speed Short-Reach Data Transmission

open access: yesPhotonics, 2021
According to different transmission distances, application scenarios of a data center mainly include intra- and inter-data center optical interconnects.
Lin Jiang   +7 more
doaj   +1 more source

Study on external cavity diode laser with a wide mode-hopping free tuning range

open access: yesFrontiers in Physics, 2022
A wide mode-hopping free and narrow linewidth tunable laser diode source with a Littman-Metcalf arrangement based on a diffraction grating is presented. Several experiments are carried out to demonstrate the tuning characteristics and spectral linewidth ...
Aiguo Zhang   +15 more
doaj   +1 more source

A Compensation Method for Nonlinearity Errors in Optical Interferometry

open access: yesSensors, 2023
Optical coherent detection is widely used for highly sensitive sensing applications, but nonlinearity issues pose challenges in accurately interpreting the system outputs.
Yanlu Li, Emiel Dieussaert
doaj   +1 more source

A 0.15μ Vrms Super-Sensitivity Photoacoustic Imager Based on Coherent Detection for Deep in-Vivo Imaging

open access: yesIEEE Access, 2023
Among various multi-wave imaging methods, the photoacoustic imaging (PAI) has attracted more attention because it can achieve higher resolution and contrast through combining advantages of light excitation and ultrasound detection.
Chuanshi Yang   +5 more
doaj   +1 more source

CPFSK Signal Detection in White and Bursty Impulsive Noises

open access: yesIEEE Access, 2019
Designing communication techniques for non-Gaussian impulsive noise has been attracting considerable attention from the research community. In this paper, we focus on the continuous phase frequency shift keying (CPFSK) signal detection for both white and
Guosheng Yang   +4 more
doaj   +1 more source

Two-photon interference with continuous-wave multi-mode coherent light [PDF]

open access: yes, 2013
We report two-photon interference with continuous-wave multi-mode coherent light. We show that the two-photon interference, in terms of the detection time difference, reveals two-photon beating fringes with the visibility $V = 0.5$.
Kim, Yong-Su   +3 more
core   +1 more source

Technology Requirements for an Alamouti-Coded 100 Gb/s Digital Coherent Receiver Using 3 × 3 Couplers for Passive Optical Networks

open access: yesIEEE Photonics Journal, 2018
Digital coherent receivers employing Alamouti-coding are a promising solution for passive optical networks (PON) with downstream rates of 100 Gb/s/$\lambda$ . To reduce the cost by utilizing high-volume photodiodes designed for 25 Gb/s data-
Md. Saifuddin Faruk   +2 more
doaj   +1 more source

Using High-Order Particle Velocity Gradient Polarization Characteristics to Detect Underwater Coherent Interference

open access: yesJournal of Marine Science and Engineering, 2023
Detection of underwater coherent interference is necessary as its presence affects the estimation of the desired target. In this work, a method based on high-order particle velocity gradient polarization characteristics is proposed to distinguish the ...
Di Wu, Lanyue Zhang, Jia Wang, Xueru Hu
doaj   +1 more source

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