Results 61 to 70 of about 7,545,238 (204)

High-sensitivity detection of narrowband light in a more intense broadband background using coherence interferogram phase [PDF]

open access: yes, 2006
This paper describes an optical interferometric detection technique,. known as the interferogram phase step shift, which detects narrowband, coherent, and partially coherent light in more intense broadband incoherent background light using changes in the
Coutinho, RC, Griffiths, HD, Selviah, DR
core  

Evaluation of Dried Plasma Spot‐Based Quantification of Glial Fibrillary Acidic Protein as a Disease‐Associated Biomarker in Neuromyelitis Optica Spectrum Disorder

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate the diagnostic accuracy of glial fibrillary acidic protein (GFAP) measured in dried plasma spots versus conventional plasma‐ and serum‐GFAP testing for assessment of disease severity in aquaporin‐4 immunoglobulin G–positive neuromyelitis optica spectrum disorder (AQP4‐IgG+ NMOSD).
Felix Wohlrab   +19 more
wiley   +1 more source

Quantum sensing of matter waves using BEC oscillations

open access: yesResults in Physics, 2022
Detecting matter waves in modern atom circuits is one of the most important operations for feasible applications. Here, we propose a sensor to monitor matter waves in atom circuits.
L. Morales-Molina, E. Arévalo
doaj   +1 more source

Intra-Cavity Chromatic Dispersion Impacts on 10-Gb/s Optical OFDM Transmissions Over 25-km Dual-RSOA-Based Self-Seeded PON Systems

open access: yesIEEE Photonics Journal, 2015
Owing to the lack of strong physical mechanisms capable of elaborately balancing a large number of longitudinal modes created in a self-seeded passive optical network (PON), the resulting coherent-like optical signals are vulnerable to frequency ...
M. L. Deng   +7 more
doaj   +1 more source

Self-injection-locked microcomb-based coherent oscillator

open access: yes, 2023
Narrow-linewidth yet tunable laser oscillators are one of the most important tools for precision metrology, optical atomic clocks, sensing and quantum computing.
Fuchuan Lei (4180534)   +7 more
core   +1 more source

Moving target detection based on velocity compensation methods in a coherent continuous wave lidar

open access: yesThe Journal of Engineering, 2019
Light Detection and Ranging (lidar) technology has been applied in military and civil areas and shows great potential. However, in coherent lidar detection, significant Doppler Effect and velocity uncertainty result a bad influence on moving target ...
Huixin Huang   +3 more
doaj   +1 more source

Novel coherent self-heterodyne receiver based on phase modulation detection [PDF]

open access: yes, 2012
We propose a novel coherent self-heterodyne receiver structure based on phase modulation detection that potentially simplifies the frontend of a coherent optical receiver.
Nguyen, Lim   +2 more
core  

A 3-D Convolutional Vision Transformer for PolSAR Image Classification and Change Detection

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The scattering properties of targets in polarimetric synthetic aperture radar (PolSAR) images are directly influenced by the targets' orientations, as the scattering properties from the same target with different orientations can be very different.
Lei Wang   +5 more
doaj   +1 more source

Differential Interference Suppression Aided Three-Stage Concatenated Successive Relaying [PDF]

open access: yes, 2012
Conventional single-relay aided two-phase cooperative networks employing coherent detection algorithms incur a significant 50% throughput loss. Furthermore, it is unrealistic to expect that in addition to the task of relaying, the relay-station would ...
Li, Li, Wang, Li, Hanzo, Lajos
core   +1 more source

Experimental Demonstration of Ultra-Dense WDM-PON With Seven-Core MCF-Enabled Self-Homodyne Coherent Detection

open access: yesIEEE Photonics Journal, 2017
We demonstrate an ultra-dense wavelength-division-multiplexing (UDWDM) passive optical network (PON) in a spatial-division-multiplexing system utilizing our home-made seven-core multicore fiber (MCF) with a self-homodyne coherent detection (SHCD) scheme.
Chunxiao Xiong   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy