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2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)最新文献

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Mechanically reconfigurable slotted-waveguide antenna array for 5G networks 用于5G网络的机械可重构开槽波导天线阵列
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121105
H. Filgueiras, I. F. da Costa, S. A. Cerqueira, R. A. Santos, J. Kelly
{"title":"Mechanically reconfigurable slotted-waveguide antenna array for 5G networks","authors":"H. Filgueiras, I. F. da Costa, S. A. Cerqueira, R. A. Santos, J. Kelly","doi":"10.1109/IMOC.2017.8121105","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121105","url":null,"abstract":"This paper proposes a high-gain mechanically reconfigurable antenna array based on a ring-shaped slotted-waveguide antenna for mm-wave applications. A full scanning range in the azimuthal plane is ensured by proper mechanically rotating a metallic jacket, which partially covers the array radiating structure. The technique provides a beamwidth of 37° in the azimuth plane and gain of 17.41 dBi at the operating frequency of 27.3 GHz. Significantly, unlike a conventional phased array, this approach does not suffer from: scan loss, beam broadening or SLL degradation. Experimental results of the array element and numerical results of the antenna array demonstrate its applicability in 5G cellular networks.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"90 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128013727","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}
引用次数: 11
Algorithm for shared path protection in elastic optical network based on spectrum partition 基于频谱划分的弹性光网络共享路径保护算法
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121061
André Lourenço, A. C. César
{"title":"Algorithm for shared path protection in elastic optical network based on spectrum partition","authors":"André Lourenço, A. C. César","doi":"10.1109/IMOC.2017.8121061","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121061","url":null,"abstract":"We present a heuristic algorithm to address the optimization problem of routing and spectrum allocation, aimed at traffic protection and restoration in an elastic optical network. The algorithm searches for working and backup disjoint paths, using the shared path protection scheme. It divides the spectrum into two partitions and prioritizes slots in one of them for backup path traffic. The way the algorithm occupies slots of the working and backup paths resembles the behavior of two inverted stacks in which their slots are filled from the extremities toward the center. This scheme is effective in improving the blocking probability of connection requests, the spectrum utilization ratio, and the average size of slot groups. Comparison with reported algorithms shows good performance of the proposed approach.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128034200","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}
引用次数: 2
Extraction of effective parameters in terahertz time-domain spectroscopy 太赫兹时域光谱中有效参数的提取
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121029
Paloma E. S. Pellegrini, L. Gabrielli, Livia Martins dos Santos, R. Ribessi
{"title":"Extraction of effective parameters in terahertz time-domain spectroscopy","authors":"Paloma E. S. Pellegrini, L. Gabrielli, Livia Martins dos Santos, R. Ribessi","doi":"10.1109/IMOC.2017.8121029","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121029","url":null,"abstract":"Formerly known as the gap in the electromagnetic spectrum, the terahertz technology is being developed in several fields of science. A terahertz time-domain spectroscopy system will be presented and used to obtain transmission spectra of organic samples. This work proposes the implementation of an algorithm able to extract effective optical parameters of the analyzed samples in terahertz and also their thickness, using only the transmittance as experimental data. Lactose samples were characterized using the proposed method.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128532090","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}
引用次数: 0
Graphene 3-port circulator based on edge-guide mode propagation 基于边导模式传播的石墨烯三端口环行器
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121139
V. Dmitriev, Samara Leandro Matos, C. Nascimento
{"title":"Graphene 3-port circulator based on edge-guide mode propagation","authors":"V. Dmitriev, Samara Leandro Matos, C. Nascimento","doi":"10.1109/IMOC.2017.8121139","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121139","url":null,"abstract":"In this work we propose and numerically analyze a new type of electromagnetic circulator operating in THz region. The circulator is based on graphene and dielectric substrates. The structure resembles a known three-port microstrip circulator based in edge guided mode. The circulation behaviour is provided by application of a DC magnetic field normal to the graphene plane. In the frequency band (2 ÷ 7) THz the isolation loss of our ultra wideband circulator is −(15 ÷ 50) dB, the insertion loss is −(2 ÷ 5) dB and return loss is better than −10 dB. The chemical potential of the graphene is 0.1 eV and DC magnetic field is 2 T.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116198750","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}
引用次数: 1
Measurement of multi-point displacements by optical fiber specklegram sensor 用光纤散斑传感器测量多点位移
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121020
E. Fujiwara, Murilo Ferreira Marques do Santos, C. Suzuki
{"title":"Measurement of multi-point displacements by optical fiber specklegram sensor","authors":"E. Fujiwara, Murilo Ferreira Marques do Santos, C. Suzuki","doi":"10.1109/IMOC.2017.8121020","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121020","url":null,"abstract":"The evaluation of an optical fiber specklegram sensor on the assessment of multi-point displacements is reported. The light emitted by a 663 nm laser source is launched into the multimode fiber, resulting in an output speckle field that is detect by a CCD. The fiber is attached to 3 microbending transducers for specklegram modulation, being the intensity distribution referenced to the possible fiber statuses in order to calculate the relative speckle field changes. Finally, the obtained data is processed by artificial neural networks for retrieving the magnitude of each input displacement. The methodology was tested on the interrogation of 2 or 3 transducers, yielding maximum errors of 0.29 μm and 0.5 μm, respectively, regarding a 30 μm range. Although the specklegram sensitivity is reduced for a large number of attached devices, the methodology can be applied on the monitoring of small sensor arrays, providing a reliable alternative for time and wavelength-based multiplexing schemes.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128780448","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}
引用次数: 5
OSNR-based backup path protection algorithm with sharing limits 基于osnr的共享限制备份路径保护算法
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121076
Rodrigo C. de Freitas, J. Martins-Filho, E. C. O. Santos, C. Bastos-Filho, D. Chaves, Helder A. Pereira
{"title":"OSNR-based backup path protection algorithm with sharing limits","authors":"Rodrigo C. de Freitas, J. Martins-Filho, E. C. O. Santos, C. Bastos-Filho, D. Chaves, Helder A. Pereira","doi":"10.1109/IMOC.2017.8121076","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121076","url":null,"abstract":"We present a novel shared backup path protection algorithm for all-optical networks which considers the physical layer impairments and limits for the number of times that a backup wavelength can be used to protect a set of active lightpaths. More-over, we propose a strategy to evaluate the trade-off between the vulnerability ratio, protection ratio and blocking probability using the dominance criterion. Our proposal outperformed three other well known approaches presented in the literature.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129057381","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}
引用次数: 0
Curvature sensitivity enhancement of fused fiber taper 熔融纤维锥度曲率灵敏度的增强
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121079
C. R. da Silveira, J. Costa, M. T. Giraldi, M. A. Franco, R. M. Silva, P. Jorge, O. Frazão
{"title":"Curvature sensitivity enhancement of fused fiber taper","authors":"C. R. da Silveira, J. Costa, M. T. Giraldi, M. A. Franco, R. M. Silva, P. Jorge, O. Frazão","doi":"10.1109/IMOC.2017.8121079","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121079","url":null,"abstract":"In this work a numerical model related to an optical inclinometer is presented. This model is based on a fused fiber taper monitored in the transmitted power. Comparisons are made between the numerical and experimental results and it is demonstrated good agreement with them. Thus, the model is proven to be suitable to simulate variation of parameters in order to obtain better performance of the sensor response. The numerical results demonstrate that is possible to enhance the inclinometer sensitivity by varying the length and waist of the taper. It is obtained a sensitivity of about 0,7 dB/degree using a taper length and waist of 1200 μm and 30 μm, respectively, at an angular range of 35 to 45 degrees.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"14 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132879586","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}
引用次数: 0
Full three-dimensional broadband and isotropic carpet cloak 全三维宽带和各向同性地毯斗篷
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121070
Daniely G. Silva, P. Teixeira, L. Gabrielli, Mateus A. F. C. Junqueira, D. Spadoti
{"title":"Full three-dimensional broadband and isotropic carpet cloak","authors":"Daniely G. Silva, P. Teixeira, L. Gabrielli, Mateus A. F. C. Junqueira, D. Spadoti","doi":"10.1109/IMOC.2017.8121070","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121070","url":null,"abstract":"This paper presents a full three-dimensional carpet cloak design, whose invisibility is independent of the incident wave direction. The device is developed with transformation optics and three-dimensional quasi-conformal coordinate transformation, which is obtained through parametrization and numerical optimization. The anisotropy reduction was sufficient to consider the medium as isotropic and to achieve the invisibility effect. The used technique enables to design the carpet cloak in broadband range and independently of light polarization.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129082121","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}
引用次数: 0
Sub-300fs mode-locked erbium doped fiber laser using graphene oxide and reduced graphene oxide onto D-shaped optical fibers 采用氧化石墨烯和还原氧化石墨烯在d型光纤上制备了低于300fs的锁模掺铒光纤激光器
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121086
D. Steinberg, R. M. Gerosa, F. N. Pellicer, S. H. Domingues, E. A. D. de Souza, L. Saito
{"title":"Sub-300fs mode-locked erbium doped fiber laser using graphene oxide and reduced graphene oxide onto D-shaped optical fibers","authors":"D. Steinberg, R. M. Gerosa, F. N. Pellicer, S. H. Domingues, E. A. D. de Souza, L. Saito","doi":"10.1109/IMOC.2017.8121086","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121086","url":null,"abstract":"We present the ultrashort pulse generation of sub-300 fs from a mode-locked Erbium doped fiber laser by using spin-coated graphene oxide and reduced graphene oxide saturable absorbers deposited onto polished surface of D-shaped optical fibers.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"61 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116382809","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}
引用次数: 0
Satellite communication challenges in a fully interconnected world 在一个完全互联的世界中，卫星通信面临挑战
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121157
M. Branco, Augusto da Rocha Gomes
{"title":"Satellite communication challenges in a fully interconnected world","authors":"M. Branco, Augusto da Rocha Gomes","doi":"10.1109/IMOC.2017.8121157","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121157","url":null,"abstract":"This paper discusses the most critical challenges to be faced by satellite communication networks in a near future fully interconnected world which becomes a reality with the emergence of next generation mobile and fixed services to transfer information data among human beings and their distributed devices and or machines.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116689382","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}
引用次数: 0
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