Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255650
Yu.V. Borisov
Sensors based on fiber-optic Bragg gratings are one of the most dynamically developing technologies in the field of fiber-optic sensor systems. The information parameter of such sensors is the shift of the maximum of the reflection wavelength under the action of the measured physical quantity. Wavelength shift measurement is done with special signal processing devices that are expensive. This article shows the possibility of using a general-purpose semiconductor laser to obtain the reflection spectra of fiber Bragg gratings is shown. The developed device allows us to obtain a reflection spectrum with a maximum resolution of at least 2 pm. In addition, the possibility of experimental registration of mode instability of a semiconductor laser is shown. The developed device can be used in a system for interrogating sensors based on fiber-optic Bragg gratings.
{"title":"Apparatus for Measuring the Reflection Spectrum of a Fiber Bragg Grating with High Resolution","authors":"Yu.V. Borisov","doi":"10.1109/APEDE48864.2020.9255650","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255650","url":null,"abstract":"Sensors based on fiber-optic Bragg gratings are one of the most dynamically developing technologies in the field of fiber-optic sensor systems. The information parameter of such sensors is the shift of the maximum of the reflection wavelength under the action of the measured physical quantity. Wavelength shift measurement is done with special signal processing devices that are expensive. This article shows the possibility of using a general-purpose semiconductor laser to obtain the reflection spectra of fiber Bragg gratings is shown. The developed device allows us to obtain a reflection spectrum with a maximum resolution of at least 2 pm. In addition, the possibility of experimental registration of mode instability of a semiconductor laser is shown. The developed device can be used in a system for interrogating sensors based on fiber-optic Bragg gratings.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123162416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255586
A. Cherevko, Y. Morgachev
The design and a computer model of a flexible graphene conical logarithmic spiral origami antenna are presented for data transmission in the ranges L, S, C, GPS L1 and L3. Its equivalent circuit (EC) has been developed. The adequacy of EC is confirmed by a computer experiment in which the thickness of the graphene helix was changed by 2 orders of magnitude. It is shown that the dependence of the frequencies of the antenna wave impedance maximums on the thickness of graphene is described by a universal function. In this case, the maximum frequencies remain stable up to a graphene thickness of ~250 µm.
{"title":"An Equivalent Circuit of a Graphene Conical Spiral Antenna","authors":"A. Cherevko, Y. Morgachev","doi":"10.1109/APEDE48864.2020.9255586","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255586","url":null,"abstract":"The design and a computer model of a flexible graphene conical logarithmic spiral origami antenna are presented for data transmission in the ranges L, S, C, GPS L1 and L3. Its equivalent circuit (EC) has been developed. The adequacy of EC is confirmed by a computer experiment in which the thickness of the graphene helix was changed by 2 orders of magnitude. It is shown that the dependence of the frequencies of the antenna wave impedance maximums on the thickness of graphene is described by a universal function. In this case, the maximum frequencies remain stable up to a graphene thickness of ~250 µm.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122498725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255623
G. Dudko, A. Kozhevnikov, V. Sakharov, Y. Khivintsev, S. Vysotskii, M. Madami, G. Gubbiotti, A. Khitun, Y. Filimonov
Spin waves (SW) focused beams propagation and interference under excitation by curvilinear focusing transducers in tangentially magnetized yttrium iron garnet (YIG) films were studied using micromagnetic simulations and Mandelstam- Brillouin light scattering technique. It is shown that due to anisotropic SW propagation in tangentially magnetized films the two-dimensional maps of SW intensity exhibit nonreciprocal properties without mirror symmetry with respect to optic axis of the focusing transducers. Due to chromatic aberration and caustics formation of the focusing transducers, the interference pattern of the focused SW beams depends on excitation frequency and is sensitive to local nonuniformities in YIG film. The obtained results demonstrate possibility to use curvilinear SW focusing transducers for information technologies based on magnonic optics.
{"title":"Spin Waves Focused Beams in YIG Films","authors":"G. Dudko, A. Kozhevnikov, V. Sakharov, Y. Khivintsev, S. Vysotskii, M. Madami, G. Gubbiotti, A. Khitun, Y. Filimonov","doi":"10.1109/APEDE48864.2020.9255623","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255623","url":null,"abstract":"Spin waves (SW) focused beams propagation and interference under excitation by curvilinear focusing transducers in tangentially magnetized yttrium iron garnet (YIG) films were studied using micromagnetic simulations and Mandelstam- Brillouin light scattering technique. It is shown that due to anisotropic SW propagation in tangentially magnetized films the two-dimensional maps of SW intensity exhibit nonreciprocal properties without mirror symmetry with respect to optic axis of the focusing transducers. Due to chromatic aberration and caustics formation of the focusing transducers, the interference pattern of the focused SW beams depends on excitation frequency and is sensitive to local nonuniformities in YIG film. The obtained results demonstrate possibility to use curvilinear SW focusing transducers for information technologies based on magnonic optics.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132351282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255529
N. A. Alekseeva, I. N. Afonin, A. Y. Kivokurtsev, V. I. Rogovin
Investigations were made of the effect of the magnitude of the magnetic field at the cathode on the characteristics of the electron beam. It was shown that with an increase in Bc to 4 mTl, no change in the adjustment of B1-B3 values is required, since the change in pulsations and average radius is less than 10%. However, for Bc ≥ 6 mTl, it is necessary to tuning the matching of the beam with MPFS. To minimize the spread of Bc values, it is proposed to adjust the existing technology for magnetizing MPFS.
{"title":"Features of Focusing Electron Beams by Guns with a Field at the Cathode","authors":"N. A. Alekseeva, I. N. Afonin, A. Y. Kivokurtsev, V. I. Rogovin","doi":"10.1109/APEDE48864.2020.9255529","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255529","url":null,"abstract":"Investigations were made of the effect of the magnitude of the magnetic field at the cathode on the characteristics of the electron beam. It was shown that with an increase in Bc to 4 mTl, no change in the adjustment of B1-B3 values is required, since the change in pulsations and average radius is less than 10%. However, for Bc ≥ 6 mTl, it is necessary to tuning the matching of the beam with MPFS. To minimize the spread of Bc values, it is proposed to adjust the existing technology for magnetizing MPFS.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123484633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255652
M. D. Atoev, R. Babichev, I. Natkhin
The sample of a bandstop filter tunable in a wide frequency band by an electromagnetic system containing samarium cobalt permanent magnets has been experimentally investigated. Without amperage in windings of small-sized electromagnetic system, the operating frequency of the was 5630 MHz. Full range of filter sample adjustment when the power supply voltage change from −12 V to +12 V is 3676 + 7260 MHz. Tuning bandwidth is 3584 MHz.
{"title":"Experimental Study of Bandstop Filter, Tunable in Wide Frequency Range by Electromagnetic System, Containing Samarium Cobalt Permanent Magnets","authors":"M. D. Atoev, R. Babichev, I. Natkhin","doi":"10.1109/APEDE48864.2020.9255652","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255652","url":null,"abstract":"The sample of a bandstop filter tunable in a wide frequency band by an electromagnetic system containing samarium cobalt permanent magnets has been experimentally investigated. Without amperage in windings of small-sized electromagnetic system, the operating frequency of the was 5630 MHz. Full range of filter sample adjustment when the power supply voltage change from −12 V to +12 V is 3676 + 7260 MHz. Tuning bandwidth is 3584 MHz.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125148553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255654
M. D. Atoev, R. Babichev, I. Natkhin
The sample of a bandpass filter tunable in a wide frequency band by an electromagnetic system containing samarium cobalt permanent magnets has been experimentally investigated. Without amperage in windings of small-sized electromagnetic system, the operating frequency of the filter was 5880 MHz. Full range of filter sample adjustment when the power supply voltage change from −4.5 V to +4.6V is 4794 ÷6689 MHz. Tuning bandwidth is 1895 MHz.
{"title":"Experimental Study of Bandpass Filter, Tunable in Wide Frequency Range by Electromagnetic System, Containing Samarium Cobalt Permanent Magnets","authors":"M. D. Atoev, R. Babichev, I. Natkhin","doi":"10.1109/APEDE48864.2020.9255654","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255654","url":null,"abstract":"The sample of a bandpass filter tunable in a wide frequency band by an electromagnetic system containing samarium cobalt permanent magnets has been experimentally investigated. Without amperage in windings of small-sized electromagnetic system, the operating frequency of the filter was 5880 MHz. Full range of filter sample adjustment when the power supply voltage change from −4.5 V to +4.6V is 4794 ÷6689 MHz. Tuning bandwidth is 1895 MHz.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126029750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255420
M. Davidovich, K. Sayapin, R. Yafarov
In this paper, the simulation of a cylindrical radial (auto-emission) magnetron is considered. Integral equations for the potential in a cylindrical magnetron are obtained, calculations of the potential and field emission current are given, and auto-emission characteristics are obtained.
{"title":"Simulation of Field Emission in a Heated-Less Magnetron","authors":"M. Davidovich, K. Sayapin, R. Yafarov","doi":"10.1109/APEDE48864.2020.9255420","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255420","url":null,"abstract":"In this paper, the simulation of a cylindrical radial (auto-emission) magnetron is considered. Integral equations for the potential in a cylindrical magnetron are obtained, calculations of the potential and field emission current are given, and auto-emission characteristics are obtained.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115986520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255585
V. Fedyaev, N. M. Marankin
By digital simulation it was shown that the electron efficiency of a diode microwave generator (diotron) plane construction may be 8.9% in a saturation mode and 5.3 % in a spatial charge mode. Cut-off cathode current conditions do not increase the efficiency.
{"title":"The Electron Efficiency of a Plane Construction Diotron","authors":"V. Fedyaev, N. M. Marankin","doi":"10.1109/APEDE48864.2020.9255585","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255585","url":null,"abstract":"By digital simulation it was shown that the electron efficiency of a diode microwave generator (diotron) plane construction may be 8.9% in a saturation mode and 5.3 % in a spatial charge mode. Cut-off cathode current conditions do not increase the efficiency.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128950006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255611
A. V. Suchilin, E. L. Nikishin, M. V. Pavlova
The propagation of a longitudinal elastic wave through an acoustic binding layer between two crystals is considered. It is shown that under the assumption that there is no significant divergence of elastic waves, the amplitude of the passed wave decreases due to its splitting into longitudinal and transverse waves, as well as due to the absorption of the elastic wave in the binding layer. The effect of reflection of longitudinal elastic waves and their absorption on the attenuation of the wave passing through the crystal interface for two binding materials: water and indium is appreciated.
{"title":"Investigation of Attenuation of High-Frequency Elastic Waves when Passing Acoustic Binding Layer of Two Crystals","authors":"A. V. Suchilin, E. L. Nikishin, M. V. Pavlova","doi":"10.1109/APEDE48864.2020.9255611","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255611","url":null,"abstract":"The propagation of a longitudinal elastic wave through an acoustic binding layer between two crystals is considered. It is shown that under the assumption that there is no significant divergence of elastic waves, the amplitude of the passed wave decreases due to its splitting into longitudinal and transverse waves, as well as due to the absorption of the elastic wave in the binding layer. The effect of reflection of longitudinal elastic waves and their absorption on the attenuation of the wave passing through the crystal interface for two binding materials: water and indium is appreciated.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131599045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255577
A. A. Shvachko, A. A. Zaharov, A. A. Potapov
In real conditions, magnetic focusing systems are affected by external magnetic fields. This also happens to correct the magnetic field in the gap of the focusing system when it is deflected. This article provides a modified mathematical model that considers both each individual magnet in the system and the impact of external magnets on it. An equation is given for the magnetic field of an individual magnet, an external influencing magnet, as well as the final equation of the entire system
{"title":"Periodic Magnet Focusing System: a Numerical Experiment","authors":"A. A. Shvachko, A. A. Zaharov, A. A. Potapov","doi":"10.1109/APEDE48864.2020.9255577","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255577","url":null,"abstract":"In real conditions, magnetic focusing systems are affected by external magnetic fields. This also happens to correct the magnetic field in the gap of the focusing system when it is deflected. This article provides a modified mathematical model that considers both each individual magnet in the system and the impact of external magnets on it. An equation is given for the magnetic field of an individual magnet, an external influencing magnet, as well as the final equation of the entire system","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127917581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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