Some trend in super-high frequency optoelectronics

Belkin, Mikhail E.; Сигов, А. С.

doi:10.1134/s1064226909080014

Cited by 13 publications

(3 citation statements)

References 15 publications

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“…1 demonstrates that OEO circuit includes various active and passive units working in optical and RF bands. Versatility of electromagnetic field theory let us use for OEO signal travelling investigation the joint wave approach based on mature microwave circuit theory that has been already utilized for microwave photonics circuitry simulations [9]. The general method of the optical node analysis lies in representation it as a directed two-port network including cascaded EOM, fiber, and PDM.…”

Section: IIImentioning

confidence: 99%

Microwave opto-electronic oscillator research

Belkin¹,

Belkin²

2010

2010 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering (SIBIRCON)

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Section: IIImentioning

confidence: 99%

Microwave opto-electronic oscillator research

Belkin¹,

Belkin²

2010

2010 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering (SIBIRCON)

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“…It can also participate in all kinds of processes, such as cell growth, differentiation, cytoskeletal organization, vesicle transport, and defense. The LRR domain is important in the protein–protein interaction [ 13 ]. The TIR domain is involved in resistance specificity and signaling [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Nucleotide-Binding Leucine-Rich Repeat Genes CsRSF1 and CsRSF2 Are Positive Modulators in the Cucumis sativus Defense Response to Sphaerotheca fuliginea

Wang

Chen

Huang

et al. 2021

IJMS

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Cucumber powdery mildew caused by Sphaerotheca fuliginea is a leaf disease that seriously affects cucumber’s yield and quality. This study aimed to report two nucleotide-binding site-leucine-rich repeats (NBS-LRR) genes CsRSF1 and CsRSF2, which participated in regulating the resistance of cucumber to S. fuliginea. The subcellular localization showed that the CsRSF1 protein was localized in the nucleus, cytoplasm, and cell membrane, while the CsRSF2 protein was localized in the cell membrane and cytoplasm. In addition, the transcript levels of CsRSF1 and CsRSF2 were different between resistant and susceptible cultivars after treatment with exogenous substances, such as abscisic acid (ABA), methyl jasmonate (MeJA), salicylic acid (SA), ethephon (ETH), gibberellin (GA) and hydrogen peroxide (H2O2). The expression analysis showed that the transcript levels of CsRSF1 and CsRSF2 were correlated with plant defense response against S. fuliginea. Moreover, the silencing of CsRSF1 and CsRSF2 impaired host resistance to S. fuliginea, but CsRSF1 and CsRSF2 overexpression improved resistance to S. fuliginea in cucumber. These results showed that CsRSF1 and CsRSF2 genes positively contributed to the resistance of cucumber to S. fuliginea. At the same time, CsRSF1 and CsRSF2 genes could also regulate the expression of defense-related genes. The findings of this study might help enhance the resistance of cucumber to S. fuliginea.

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“…Радиофотонные компоненты работают на высоких частотах с очень широкой полосой пропускания и могут эффективно передавать сигналы из радиочастотной области в оптическую и обратно. Наконец, использование оптического волокна для передачи сигналов СВЧдиапазона снижает радиочастотные потери, значительно уменьшает размер и массу кабеля, способствует улучшению электромагнитной совместимости в зоне прокладки линии передачи сигнала [1][2][3][4][5][6].…”

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Specific Features of Designing Microwave Photonic Receiving and Transmitting Channels of Onboard Systems for Communication, Radar and Radio Monitoring

Unchenko

Emel’yanov

2023

Izv. vysš. učebn. zaved. Ross., Radioèlektron.

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Introduction. Designers of modern on-board systems for communication, radar, and radio monitoring face the problem of improving their qualitative characteristics, including the operating frequency, instantaneous bandwidth, receiver sensitivity, and electromagnetic compatibility. In addition, the dimensions, weight, and power of such systems, as well their cost, should be minimized. However, the current semiconductor microwave electronics has reached its limits in terms of frequency and dynamic characteristics. A possible solution consists in the implementation of microwave photonic transmission lines in the design of on-board systems for communication, radar, and radio monitoring on the basis of modulation of laser radiation by means of electro-absorption.Aim. To study the transfer characteristics and noise figure of a microwave photonic transmission line realized based on the modulation of laser radiation by means of electro-absorption. To compare the results of theoretical calculations and experimental investigations.Materials and methods. The research methodology involved external modulation using an electro-absorption modulator (EAM), mathematical representation of the transmission coefficient, as well as comparison of the theoretical and practical results.Results. Theoretical values of the transmission coefficient and noise figure for a microwave photonic transmission line based on the external modulation method using an EAM were obtained. Experimental values of the transmission coefficient and noise figure for a microwave photonic line in the frequency range from 100 MHz to 16 GHz were presented. The obtained data were compared with those of the nearest mass-produced products of foreign production and those presented in domestic publications on microwave photonic signal transmission lines.Conclusion. The use of an EAM, whose main advantage consists in the possibility of integration with a laser emitter, allowed the authors to design and manufacture a small-sized industrial prototype of a radio-photonic transceiver, capable of transmitting a radio signal over tens of kilometers in the frequency range from 100 MHz to 12 GHz with a transmission coefficient of at least −3 dB and a noise figure no more than 36 dB at the upper operating frequency. At the same time, the closest analogue manufactured by Emcore with similar dimensions has a transmission coefficient of −30 dB and uses direct modulation of laser radiation as a transmission method, which significantly reduces the transmission range of the microwave signal.

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Some trend in super-high frequency optoelectronics

Cited by 13 publications

References 15 publications

Microwave opto-electronic oscillator research

Microwave opto-electronic oscillator research

Nucleotide-Binding Leucine-Rich Repeat Genes CsRSF1 and CsRSF2 Are Positive Modulators in the Cucumis sativus Defense Response to Sphaerotheca fuliginea

Specific Features of Designing Microwave Photonic Receiving and Transmitting Channels of Onboard Systems for Communication, Radar and Radio Monitoring

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