Results 41 to 50 of about 5,174,138 (292)
Coherent Detection of Terahertz Radiation with Graphene
ACS Photonics, 2019 Despite that significant efforts have been made in the development of time-integrated graphene-based detectors operating in vis/IR/THz ranges, little is known about coherent detection of THz pulses...
P. Obraztsov +8 more
semanticscholar +1 more source
Distributed Target Detection with Coherent Fusion in Tracking Based on Phase Prediction
Remote SensingIn distributed radar, a coherent system often gains attention for its higher detection potential in contrast to its non-coherent counterpart. However, even for a distributed coherent radar, it is difficult to coherently accumulate local observations in ...
Aoya Wang +3 more
doaj +1 more source
Detection and discrimination of coherent motion [PDF]
Perception & Psychophysics, 1990 When viewing a pair of bars defined by the difference of spatial Gaussian functions (DOGs), human observers can discriminate accurately the relative movements of the bars, even when they differ in spatial frequency. On each trial, observers viewed two brief presentation intervals in which a pair of vertically oriented DOGs moved randomly back and forth
L, Mowafy, R, Blake, J S, Lappin
openaire +2 more sources
High-Sensitivity Gas Detection with Air-Lasing-Assisted Coherent Raman Spectroscopy
Ultrafast Science, 2022 Remote or standoff detection of greenhouse gases, air pollutants, and biological agents with innovative ultrafast laser technology attracts growing interests in recent years.
Zhihao Zhang +10 more
semanticscholar +1 more source
Mitigation of Nonlinear Impairments by Using Support Vector Machine and Nonlinear Volterra Equalizer
Applied Sciences, 2019 A support vector machine (SVM) based detection is applied to different equalization schemes for a data center interconnect link using coherent 64 GBd 64-QAM over 100 km standard single mode fiber (SSMF).
Rebekka Weixer +4 more
doaj +1 more source
DP-QPSK Coherent Detection Using 2D Grating Coupled Silicon Based Receiver
IEEE Photonics Journal, 2021 We propose and demonstrate a 100 Gbit/s silicon photonic (SiPh) coherent receiver (Rx) with advanced digital signal processing (DSP) for dual-polarization quadrature-phase-shift-keying (DP-QPSK) transmission.
Ching-Wei Peng +6 more
doaj +1 more source
IEEE Photonics Journal, 2022 The inter-data center links are meeting the challenge of increasing transmission capacity continuously. Here, the tradeoff between transmission capacity and cost and power consumption especially needs to be considered.
Yuyuan Gao +6 more
doaj +1 more source
A self-coherent receiver for detection of PolMUX coherent signals
Optics Express, 2012 A self-coherent receiver capable of demultiplexing PolMUX-signals without an external polarization controller is presented. Training sequences are introduced to estimate the polarization rotation, and a decision feedback recursive algorithm mitigates the random walk of the recovered field.
Li, Jingshi +10 more
openaire +4 more sources
Detection statistics for coherent RMCW LiDAR
Optics Express, 2021 This paper presents an analytical model and experimental validation for the detection performance and false-alarm rates for phase-encoded random modulation continuous-wave (RMCW) LiDAR. Derivation of the model focuses on propagating the effects of relevant noise sources through the system to determine an analytical expression for the detection rate ...
Callum S. Sambridge +4 more
openaire +2 more sources
Optics Express, 2018 We systematically investigate the data analysis methods in terahertz frequency domain spectroscopy (THz-FDS) with coherent detection. We demonstrate that the Hilbert transform method is one of the most appropriate for data processing in THz-FDS.
Deyin Kong +7 more
semanticscholar +1 more source