The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

Eugene V. Sypin - One of the best experts on this subject based on the ideXlab platform.

  • Simulation of High-Speed Electro-Optical Device for Fire Detection at Early Stage under the Influence of Dynamic Optical Noise
    2019 20th International Conference of Young Specialists on Micro Nanotechnologies and Electron Devices (EDM), 2019
    Co-Authors: Alexey Yu. Sidorenko, Nadezhda Yu. Tupikina, Sergey A. Lisakov, Eugene V. Sypin
    Abstract:

    The simulation of high-speed electro-Optical Device for fire detection under the influence of dynamic Optical interference on the entrance pupil is performed. The analysis of known approaches to providing noise immunity of the Device is performed: use of selected spectral ranges of control; the use of additional channels of the Device (hardware redundancy); the use of additional algorithms for signal processing channels of the Device (software redundancy). Analytical dependences for modeling are formulated. The simulation of the optoelectronic Device operation is performed. Calculation of the mathematical model was made using software package Matlab and the development environment RAD Studio. The characteristics of changes in spectral ratios depending on the temperature of the filament body are obtained. The spectral flux of the incandescent lamp is calculated from the dynamics of the temperature change of the incandescent body. As result of modeling, the spectral ranges of control -1350±50, 2700±50 and 4300±50 nm were selected, and their ratios were based. Ratios of Q2700-1350 for the spectral flow of a fire and incandescent bulbs made up 10.9 and 0.164 respectively. Ratios of Q2700-4300 hearth and bulbs amounted to 1.34 and 4.13, respectively. The values of the ratios established in the range for Q2700-1350 from 10.748 to 0.784 for Q2700-4300 from 1.354 to 1.557 for total flow with changes in temperature of the filament lamp. The characteristic values of the ratios changes characterizing the fire and the incandescent lamp and allowing to detect the radiation of the source against the background of Optical interference are determined. Additional studies on the basis of the developed model should be carried out to more accurately identify the source of fire under the influence of dynamic Optical interference.

  • Modeling of Concentration Electro-Optical Sensors for Gas and Coal Dust in Multi-Criterial Electro-Optical Device for Control of the Emergency and Pre-Emergency Situations in Coal Mines
    2018 19th International Conference of Young Specialists on Micro Nanotechnologies and Electron Devices (EDM), 2018
    Co-Authors: Sergey A. Lisakov, Anton I. Sidorenkc, Ivan S. Zorin, Eugene V. Sypin
    Abstract:

    Modeling of electro-Optical sensors (EOS) for the concentration of methane, carbon monoxide, dioxide and coal dust was carried out. These sensors are part of a multicriteria electro-Optical Device for monitoring emergency and pre-emergency situations in coal mines. The main analytical dependencies for the modeling of electro-Optical sensors for the concentration of gases and dust have been determined. Computer model has been developed on the basis of this dependencies. The verification of the computer model adequacy is based on experimental data, which are given in the literature. The relative error in modeling the CO2sensor does not exceed 5%, CO -7%, C2H4 -4%. The relative error in modeling of the coal dust concentration sensor does not exceed 7%. Simulation of the spectral transfer coefficient of gases and dust-air mixture was carried out. The effect of cross-sensitivity for gas EOS and coal dust EOS for clarifying of control spectral ranges was analyzed based on simulation results. Methane concentration is controlled in the spectral range of 3.2-3.7 μm, carbon dioxide - in spectral range of 4.2-4.4 μm, carbon monoxide - in spectral range of 4.5-4.7 μm, The hardware (source and receiver of radiation) is selected for electro-Optical sensors of the gases and dust concentration. Investigation of the foreign gases effect on the readings of the EOS, which controls the concentration of an individual gas (cross sensitivity) was carried out. Effect of extraneous gases on the EOS readings of the concentration of dust and gases has been determined.

  • High-speed electro-Optical Device for determining of adulterated honey
    2016 17th International Conference of Young Specialists on Micro Nanotechnologies and Electron Devices (EDM), 2016
    Co-Authors: Kseniya A. Kovshova, Sergey A. Lisakov, Eugene V. Sypin
    Abstract:

    Article describes a method for determining the difference of adulterated and natural honey by spectral analysis. Features of the method are formulated. The technique of carrying out research, design of laboratory setup and the block diagram of a household appliance were developed. Spectral characteristics transmittance transmittances of the honey were received a result of an experimental study. Product was received from honey and sugar syrup by interfusion. The comparative analysis of the received spectral characteristics transmittance was carried out.

W. P. Risk - One of the best experts on this subject based on the ideXlab platform.

  • Integrated Optical Device with Second-Harmonic Generator, Electrooptic Lens, and Electrooptic Scanner in LiTaO3
    Journal of Lightwave Technology, 1999
    Co-Authors: Yi Chiu, M. J. Kawas, Daniel D. Stancil, Vivek Gopalan, T.e. Schlesinger, W. P. Risk
    Abstract:

    This paper reports the first demonstration of an integrated Optical Device in z-cut LiTaO 3 that contains the following three functional parts: a quasiphase-matched second-harmonic generation (SHG) grating, an electrooptic (EO) lens, and an electrooptic scanner. The SHG Device consists of channel waveguides passing through periodic domain-inverted gratings. The frequency of the input infrared (IR) light at 864 nm was doubled into blue light at 432 nm. A stack of EO lenses was used to collimate the light from the channel waveguide. The measured beam size at the output facet for various applied voltages to the lenses agreed with simulation. After collimation, light passes through an EO scanner that controls the angle of the output beam. A scanning sensitivity of 17 mrad/kV was measured for the scanner, compared to the calculated value of 15 mrad/kV.

  • Integrated Optical Device with second-harmonic generator, electrooptic lens, and electrooptic scanner in LiTaO/sub 3/
    Journal of Lightwave Technology, 1999
    Co-Authors: Yi Chiu, M. J. Kawas, Daniel D. Stancil, Vivek Gopalan, T.e. Schlesinger, W. P. Risk
    Abstract:

    This paper reports the first demonstration of an integrated Optical Device in z-cut LiTaO/sub 3/ that contains the following three functional parts: a quasiphase-matched second-harmonic generation (SHG) grating, an electrooptic (EO) lens, and an electrooptic scanner. The SHG Device consists of channel waveguides passing through periodic domain-inverted gratings. The frequency of the input infrared (IR) light at 864 nm was doubled into blue light at 432 nm. A stack of EO lenses was used to collimate the light from the channel waveguide. The measured beam size at the output facet for various applied voltages to the lenses agreed with simulation. After collimation, light passes through an EO scanner that controls the angle of the output beam. A scanning sensitivity of 17 mrad/kV was measured for the scanner, compared to the calculated value of 15 mrad/kV.

T. Tanifuji - One of the best experts on this subject based on the ideXlab platform.

Yi Chiu - One of the best experts on this subject based on the ideXlab platform.

  • Integrated Optical Device with Second-Harmonic Generator, Electrooptic Lens, and Electrooptic Scanner in LiTaO3
    Journal of Lightwave Technology, 1999
    Co-Authors: Yi Chiu, M. J. Kawas, Daniel D. Stancil, Vivek Gopalan, T.e. Schlesinger, W. P. Risk
    Abstract:

    This paper reports the first demonstration of an integrated Optical Device in z-cut LiTaO 3 that contains the following three functional parts: a quasiphase-matched second-harmonic generation (SHG) grating, an electrooptic (EO) lens, and an electrooptic scanner. The SHG Device consists of channel waveguides passing through periodic domain-inverted gratings. The frequency of the input infrared (IR) light at 864 nm was doubled into blue light at 432 nm. A stack of EO lenses was used to collimate the light from the channel waveguide. The measured beam size at the output facet for various applied voltages to the lenses agreed with simulation. After collimation, light passes through an EO scanner that controls the angle of the output beam. A scanning sensitivity of 17 mrad/kV was measured for the scanner, compared to the calculated value of 15 mrad/kV.

  • Integrated Optical Device with second-harmonic generator, electrooptic lens, and electrooptic scanner in LiTaO/sub 3/
    Journal of Lightwave Technology, 1999
    Co-Authors: Yi Chiu, M. J. Kawas, Daniel D. Stancil, Vivek Gopalan, T.e. Schlesinger, W. P. Risk
    Abstract:

    This paper reports the first demonstration of an integrated Optical Device in z-cut LiTaO/sub 3/ that contains the following three functional parts: a quasiphase-matched second-harmonic generation (SHG) grating, an electrooptic (EO) lens, and an electrooptic scanner. The SHG Device consists of channel waveguides passing through periodic domain-inverted gratings. The frequency of the input infrared (IR) light at 864 nm was doubled into blue light at 432 nm. A stack of EO lenses was used to collimate the light from the channel waveguide. The measured beam size at the output facet for various applied voltages to the lenses agreed with simulation. After collimation, light passes through an EO scanner that controls the angle of the output beam. A scanning sensitivity of 17 mrad/kV was measured for the scanner, compared to the calculated value of 15 mrad/kV.

M. Kihara - One of the best experts on this subject based on the ideXlab platform.