?
Optical Angular Displacement Sensors
P. 312–315.
The paper is devoted to the research and development of a contactless optical sensor for instrumental means of product quality control. The paper presents results of the study of sensitivity of incoherent optical OTDR type sensors to the angular displacement of the reflecting surface. The results of experimental studies of the transfer characteristics of the sensor with transceiver modules of various configurations are presented. Variants of the structure of the measuring channel of the sensor to obtain the maximum range of measured angles are offered. The influence of non-informative parameters on the measurement results is analyzed. The results of mathematical modeling of the angular displacement sensor based on the laws of geometric optics are presented.
Chubchev E. D., Dolzhenko E. I., K.A. Tomyshev et al., Measurement: Journal of the International Measurement Confederation 2025 Vol. 253 Article 117479
Tilted fiber Bragg gratings (TFBGs) possess promising characteristics for refractometric purposes. However, their
complex spectral response containing a large number of features makes the sensor’s output relevance highly
dependent on data demodulation and interpretation. We propose a method for processing sensor data based on a
detailed analysis of the system’s behavior during the transition of cladding modes from ...
Added: May 16, 2025
I. A. Gayduchenko, An P., V. Belosevich et al., , in: 2022 Photonics & Electromagnetics Research Symposium (PIERS).: IEEE, 2022. P. 904–907.
Here, we report on our recent efforts to develop of a photodetector based on single-layer graphene two-terminal device on the sapphire substrate. Our detector operates at 1.55μm, which corresponds to the telecom window. We have demonstrated that our detector operates under zero bias conditions at room temperature, and the signal-to-noise ratio reaches 45dB. The measured frequency ...
Added: August 4, 2022
Kryzhanovskaya N., Zubov Fedor I., Moiseev E. et al., Laser Physics Letters 2022 Vol. 19 No. 1 Article 016201
Characteristics of a compact III–V optocoupler heterogeneously integrated on a silicon substrate
and formed by a 31 μm in diameter microdisk (MD) laser with a closely-spaced
50 μm × 200 μm waveguide photodetector are presented. Both optoelectronic devices were
fabricated from the epitaxial heterostroctructures with InGaAs/GaAs quantum well-dot layers.
The measured dark current density of the photodetector was as ...
Added: December 2, 2021
Gritchenko A. S., Eremchev I., Naumov A. et al., Optics and Laser Technology 2021 Vol. 143 Article 107301
Fluorescence imaging of single quantum light emitters (atoms, molecules, quantum dots, color centers in crystals)
is an inherent experimental problem of modern photonics and its numerous applications. In these measurements,
highly sensitive cameras are of the key significance. Recent progress in technologies of chargecoupling
devices (CCD) and complementary metal-oxide semiconductor (CMOS) sensors opens up possibilities
for detection of extreme ...
Added: October 16, 2021
Малевская А. В., Калюжный Н. А., Малевский Д. А. et al., Физика и техника полупроводников 2021 Т. 55 № 8 С. 699–703
Investigation of IR light emitting diodes (wavelength 850 nm) based on AlGaAs/GaAs heterostructures with multiple quantum wells InGaAs in the region generating radiation, grown by the MOCVD technique, has been carried out. Post-growth technologies for removing the growth substrate and for transfer the heterostructure on an alien carrier with an optical reflector have been developed. ...
Added: October 14, 2021
Vladimir Starostenko, Alexander Tuv, Sergei Polesskiy, , in: 2021 International Seminar on Electron Devices Design and Production (SED).: IEEE, 2021. P. 1–5.
This article studies the operation of an optical sensor with a cylindrical measured surface. Various options for positioning the sensor are considered. The study provides an estimation of the influence of the radius of the cylindrical reflective surface on the sensor transmission function. ...
Added: April 1, 2021
Ignatyeva D., Kapralov P., Golovko P. et al., Sensors 2021 Vol. 21 No. 6 Article 1984
We propose an all-dielectric magneto-photonic crystal with a hybrid magneto-optical
response that allows for the simultaneous measurements of the surface and bulk refractive index of
the analyzed substance. The approach is based on two different spectral features of the magnetooptical
response corresponding to the resonances in p- and s-polarizations of the incident light.
Angular spectra of p-polarized light have ...
Added: March 13, 2021
Atanov N., Davydov Y., Glagolev V. et al., IEEE Transactions on Nuclear Science 2020 Vol. 67 No. 7 P. 1760–1764
Barium fluoride (BaF2) crystals are considered as a candidate scintillator for scintillation detectors in high-energy physics because of high radiation hardness and short decay time (<; 1 ns) of the fast emission component. However, the high level of the slow emission component can deteriorate the detector time resolution. Special approaches are required to decrease this ...
Added: February 19, 2021
Yelizarov (Elizarov) A. A., Nazarov I., Skuridin A. et al., , in: SYNCHROINFO 2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications.: IEEE, 2020. P. 1–4.
This paper presents a computer model of a FSS based on mushroom-shaped metamaterial. The model is based on the calculation of equivalent distributed inductance and distributed capacitance of the unit cell of the surface according to its geometric dimensions. The computer model is realized as the “META” program based on MathCAD ver.15 software and provides ...
Added: August 20, 2020
Yury I. Gudkov, , in: Proceedings of the 2018 IEEE International Conference "Quality Management, Transport and Information Security, Information Technologies" (IT&QM&IS).: IEEE, 2018. P. 312–315.
This paper analyzes the main factors affecting the accuracy of recording the movement of an object using an amplitude fiber optical sensor with external modulation of the radiation flux is analyzed. The structural scheme, the operating principle and the algorithm for processing the measuring information of a non-contact infrared sensor for recording the moment of passage of a reflective mark are ...
Added: November 14, 2018
Yury I.Gudkov, Vladimir N. Azarov, Alexander L. Tuv, , in: Proceedings of the 2017 International Conference "Quality Management, Transport and Information Security, Information Technologies" (IT&QM&IS).: IEEE, 2017. P. 725–727.
The analysis of typical ways to build tools of control of the security perimeter and intrusion into the protected area. The method of compensation of the effect of ambient light, the block diagram and measuring information processing algorithm of active infrared sensor of reflecting type, allowing to use it to register movement, is reviewed. The ...
Added: October 31, 2017
Gudkov Y., Маценко В. О., Шестопалова О. А., Качество. Инновации. Образование 2015 № 5 С. 51–55
Discusses ways to improve the competitiveness of domestic products. The necessity of the development tools process control. The analysis of sensors for building control systems axial displacement of the walking belt for modernization of technological equipment for slitting materials. Developed measuring circuit design and optical sensor with external modulation to control the displacement of the ...
Added: June 3, 2015
O.V. Kotov, Yu. E. Lozovik, Kol'chenko M. A., Optics Express 2013 Vol. 21 No. 11 P. 13533–13546
The behavior of the TE and TM electromagnetic waves in graphene at the interface between two semi-infinite dielectric media is studied. The dramatic influence on the TE waves propagation even at very small changes in the optical contrast between the two dielectric media is predicted. Frequencies of the TE waves are found to lie only ...
Added: June 6, 2013