Results 111 to 120 of about 25,049 (217)

Spatial frequency response of an optical heterodyne receiver [PDF]

The principles of transfer function analysis are applied to a passive optical heterodyne receiver to obtain the modulation transfer function (MTF). MTF calculations are performed based on an optical platform which is imaging vertically varying profiles ...
Fales, C. L., Robinson, D. M.
core   +1 more source

Current sensor utilizing heterodyne detection

, 2019
Based on the Faraday effect for measuring ac current, we describe a fiber-optic sensor that uses laser-diode intensity modulation to perform heterodyne signal detection. The sensor output at the carrier frequency is used as a reference signal to normalize the results.
Ferrari, José A, Dubra, Alfredo, Arnaud, Alfredo, Perciante, Daniel   +3 more
openaire   +1 more source

Weak Signal Detection Method for Millimeter-Wave Sensor Signals Based on Heterodyne Duffing Oscillator

Mathematics
Millimeter-wave technology helps achieve antenna miniaturization and high gain, but it is limited by factors such as short wavelength, high transmission loss, and high signal-to-noise ratio, which put higher requirements on the accuracy and computing ...
Tai An, Xiaopeng Yan, Ningzhe Zhang, Xinhong Hao, Jinyu Zhang, Jian Dai   +5 more
doaj   +1 more source

Speckle decorrelation in Ultrasound-modulated optical tomography made by heterodyne holography

, 2016
Ultrasound-modulated optical tomography (UOT) is a technique that images optical contrast deep inside scattering media. Heterodyne holography is a promising tool able to detect the UOT tagged photons with high efficiency.
Gross, M
core   +1 more source

Heterodyne detection with mismatch correction based on array detector. [PDF]

Opt Commun, 2016
Hongzhou D, Guoqiang L, Ruofu Y, Chunping Y, Mingwu A.   +4 more
europepmc   +1 more source

Phase-resolved ferromagnetic resonance using heterodyne detection method. [PDF]

Phys Rev B, 2016
Yoon S, Liu J, McMichael RD.
europepmc   +1 more source

CANCELLATION OF THE COUNTER CHANNELS EFFECTS IN DUPLEX SINGLE-FIBER OPTICAL PATHS WITHOUT WAVELENGTH DIVISION MULTIPLEXING

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
An analysis of the Rayleigh scattering effect on the work of duplex single-fiber optical path without wavelength division multiplexing of counter channels using heterodyne detection was made in this paper. Characteristics of the Rayleigh scattering noise
V. N. Uryadov, Y. V. Roshchupkin, V. Y. Bunas, A. S. Zelenin   +3 more
doaj  

Harnessing Van Hove singularities for terahertz photoresponse via Fermi surface reconstruction in kagome lattices. [PDF]

Nat Commun
Wei Y, Jing W, Wu Y, Ge X, Chen T, Zhang L, Liu X, Hu Z, Pan X, Yang Y, Zhuo X, Han L, Zhang S, Zhang Y, Lan S, Lu W, Ren W, Shen D, Wang F, Guo Y, Wang L, Chen X, Hu W.   +22 more
europepmc   +1 more source

Resonator-enhanced distributed Bragg reflector lasers. [PDF]

Light Sci Appl
Yu D, Geng Z, Huang Y, Tong Y, Xia Y, Liu M, Huang Y, Xiang C.   +7 more
europepmc   +1 more source

Improving free-space continuous variable quantum key distribution with adaptive optics. [PDF]

Sci Rep
Sayat MT, Birch M, Copeland M, Jager E, Thearle O, Bennet F, Lam PK, Rattenbury NJ, Cater JE.   +8 more
europepmc   +1 more source