Results 21 to 30 of about 520,939 (335)
Noise Suppression Phenomenon in Fiber Raman Amplifier
Measurement Science Review, 2015 The problem of small bit error rate is actual in fiber Raman amplifiers. Our experimental data on the amplified spontaneous emission (ASE) with backward pumping as a base of optical noise evaluation are presented in this paper.
Felinskyi Georgii, Dyriv Mykhailo
doaj +1 more source
Parameter Simulation and Design of an Airborne Hyperspectral Imaging LiDAR System
Remote Sensing, 2021 With continuous technological development, the future development trend of LiDAR in the field of remote sensing and mapping is to obtain the elevation and spectral information of ground targets simultaneously.
Liyong Qian +6 more
doaj +1 more source
Computational signal-to-noise ratio analysis for optical quadrature microscopy
Optics Express, 2009 Optical quadrature microscopy (OQM) was invented in 1997 to reconstruct a full-field image of quantitative phase, and has been used to count the number of cells in live mouse embryos. Here we present a thorough SNR analysis that incorporates noise terms for fluctuations in the laser, aberrations within the individual paths of the Mach-Zehnder ...
William C, Warger, Charles A, DiMarzio
openaire +2 more sources
Sub-SQL Sensitivity via Optical Rigidity in Advanced LIGO Interferometer with Optical Losses [PDF]
, 2005 The ``optical springs'' regime of the signal-recycled configuration of laser interferometric gravitational-wave detectors is analyzed taking in account optical losses in the interferometer arm cavities.
A. V. Syrtsev +12 more
core +1 more source
Italian National Conference on Sensors, 2017 We propose a novel denoising method based on empirical mode decomposition (EMD) to improve the signal-to-noise ratio (SNR) for vibration sensing in phase-sensitive optical time domain reflectometry (φ-OTDR) systems. Raw Rayleigh backscattering traces are
Zengguang Qin, Hui Chen, Jun Chang
semanticscholar +1 more source
Terahertz spectroscopy in biomedical field: a review on signal-to-noise ratio improvement
, 2020 With the non-ionizing, non-invasive, high penetration, high resolution and spectral fingerprinting features of terahertz (THz) wave, THz spectroscopy has great potential for the qualitative and quantitative identification of key substances in biomedical ...
Yan Peng +4 more
semanticscholar +1 more source
Sensors, 2019 When applying an optical current transformer (OCT) to direct current measurement, output signals exhibit a low signal-to-noise ratio and signal-to-noise band overlap. Sinusoidal wave modulation is used to solve this problem.
Yan Shen +5 more
doaj +1 more source
IEEE Photonics Journal, 2014 We propose a novel method of in-band estimation of optical signal-to-noise ratio (OSNR) using a digital coherent receiver, where OSNR is determined from second- and fourth-order statistical moments of equalized signals in any modulation format.
Md. Saifuddin Faruk, Y. Mori, K. Kikuchi
semanticscholar +1 more source
Scattering-lens based quantum imaging beyond shot noise
Scientific Reports, 2021 The scheme of optical imaging using scattering lens can provide a resolution beyond the classical optical diffraction limit with a coherent-state input.
Dong Li, Yao Yao
doaj +1 more source
Optimizing the Signal to Noise Ratio of a Beam Deflection Measurement with Interferometric Weak Values [PDF]
, 2009 The amplification obtained using weak values is quantified through a detailed investigation of the signal to noise ratio for an optical beam deflection measurement.
Dixon, P. Ben +3 more
core +3 more sources