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

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Remote fiber Bragg grating-based sensor characterization with ultra-high-resolution tunable photon counting OTDR 基于超高分辨率可调谐光子计数OTDR的远程光纤Bragg光栅传感器表征
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121027
L. E. Y. Herrera, G. Amaral, J. P. von der Weid
{"title":"Remote fiber Bragg grating-based sensor characterization with ultra-high-resolution tunable photon counting OTDR","authors":"L. E. Y. Herrera, G. Amaral, J. P. von der Weid","doi":"10.1109/IMOC.2017.8121027","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121027","url":null,"abstract":"We report on the possibility of remotely characterizing Bragg gratings using an ultra-high-resolution tunable photon-counting OTDR. The achievable 2.8 cm resolution as well as the tunability of the technique permit the determination of the dispersion induced by the grating and its length inside the fiber. We believe that this characterization technique can be employed in long distance monitoring for different Bragg-grating fiber sensors.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"48 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":"116703495","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: 3
Patch antenna bio-inspired on wayfaring-tree (Viburnum lantana) for applications in 2.4 GHz 应用于2.4 GHz的基于行走树(Viburnum lantana)的贴片天线
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121118
Maciel Alves de Oliveira, Andrécia Pereira da Costa, José de Arimateia Pinto Magno, G. Fontgalland, Gustavo Gonçalves de Sousa Forte, G. F. Aragao, Paulo Henrique da Fonseca Silva
{"title":"Patch antenna bio-inspired on wayfaring-tree (Viburnum lantana) for applications in 2.4 GHz","authors":"Maciel Alves de Oliveira, Andrécia Pereira da Costa, José de Arimateia Pinto Magno, G. Fontgalland, Gustavo Gonçalves de Sousa Forte, G. F. Aragao, Paulo Henrique da Fonseca Silva","doi":"10.1109/IMOC.2017.8121118","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121118","url":null,"abstract":"This paper presents the design of a patch antenna with structure bio-inspired by the Wayfaring-tree (Viburnum lantana) leaf chosen from the European native flora, for applications in wireless communication systems. The antenna was manufactured in low-cost FR-4 substrate, fed by a microstrip line using the hybrid technique with matching impedances of 50Ω. Specifically the antenna is designed for operation in the 2400–2483.5 MHz range of the IEEE802.11b, g, n (Wi-Fi) and IEEE802.15 (Bluetooth). Ansys Designer® simulator software was used for numerical characterization and a vector network analyzer for the experimental characterization. The proposed antenna presents a bandwidth of 61 MHz, measured reflection coefficient of −37.14 dB at 2.44 GHz, and gain of 3.68 dBi in the broadside direction.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"1 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":"116916117","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
Design of a novel single-layer dual-band FSS with angular stability using multifractal geometry 利用多重分形几何设计一种角稳定的单层双带FSS
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121019
E. C. Braz, S. Dantas, A. Campos, A. Neto
{"title":"Design of a novel single-layer dual-band FSS with angular stability using multifractal geometry","authors":"E. C. Braz, S. Dantas, A. Campos, A. Neto","doi":"10.1109/IMOC.2017.8121019","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121019","url":null,"abstract":"A novel single-layer dual-band FSS with angular stability is proposed in this paper. The proposed FSS is a junction of the Koch curve with the Ericampos multifractal geometry. The FSS functioning as stop band filter for satellite application at S-and X-Bands. The proposed FSS exerts high angular stability and the same response for both TE and TM operation modes because of its inherent symmetry. The validation of the proposed structure was verified through measurements. A good agreement between numerical and experimental results is obtained.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"58 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":"126603857","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
Optical constant and thickness determination using THz time-domain reflection-only signals 利用太赫兹时域反射信号确定光学常数和厚度
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121097
Salah Haffar, U. Hasar, J. Barroso
{"title":"Optical constant and thickness determination using THz time-domain reflection-only signals","authors":"Salah Haffar, U. Hasar, J. Barroso","doi":"10.1109/IMOC.2017.8121097","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121097","url":null,"abstract":"A self-calibration noniterative technique for determination of the optical constants and thickness of lossless materials using only three reflection measurements is proposed. A generalized model is derived based on the reflection measurements. For validation, two different samples (Si and GaAs samples) are considered for extraction of their optical parameters and thicknesses by using a numerical full wave electromagnetic simulator. It is demonstrated that the proposed method can retrieve highly accurate results provided that reflected signal components are accurately separated.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"99 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":"126802265","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
Proposal of a microwave absorber using FSS with square loops 方形环FSS微波吸收器的设计
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121041
José Jaime Guimarães Peixoto Neto, A. Campos
{"title":"Proposal of a microwave absorber using FSS with square loops","authors":"José Jaime Guimarães Peixoto Neto, A. Campos","doi":"10.1109/IMOC.2017.8121041","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121041","url":null,"abstract":"With the rapid growth of wireless systems, studies involving electromagnetic wave absorbers have attracted great attention from researchers. Their applications range from indoor systems to military applications. In parallel with this growth, increasing studies on Frequency Selective Surfaces (FSS) allow their filtering properties to be applicable in several systems, such as reflecting antennas, bandpass radomes and electromagnetic wave absorbers. This work aims to study the use of FSS to design microwave absorbers. For the analysis the ANSYS HFSS software will be used, which provides transmission characteristics of the structure for a flat wave. Initial results will be presented, demonstrating the understanding of the effects analyzed.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"27 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":"125944073","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
Design of optimized integrated optical phase modulators with graphene 石墨烯集成光学相位调制器的优化设计
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121123
Fabiana C. Casallas, R. D. de Oliveira
{"title":"Design of optimized integrated optical phase modulators with graphene","authors":"Fabiana C. Casallas, R. D. de Oliveira","doi":"10.1109/IMOC.2017.8121123","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121123","url":null,"abstract":"Integrated optical phase modulators based on silicon waveguides with graphene are optimized through the design of the waveguide for operation with quasi-TE or quasi-TM modes using numerical simulations. Higher performance is achieved for quasi-TM mode operation with V<inf>π</inf>L=0.5 V.mm and for the quasi-TE mode V<inf>π</inf>L=0.9 V.mm, electro-optical bandwidths of up to 2.85 GHz is achieved.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"5 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":"124148079","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
Single-carrier 400G unrepeatered WDM transmission using nonlinear compensation and DD-LMS with FEC feedback 采用非线性补偿和带FEC反馈的DD-LMS的单载波400G无中继WDM传输
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121038
C. Hélio, Andre L. N. Souza, Joao Januario, S. Rossi, A. Chiuchiarelli, J. Reis, S. Makovejs, D. Mello
{"title":"Single-carrier 400G unrepeatered WDM transmission using nonlinear compensation and DD-LMS with FEC feedback","authors":"C. Hélio, Andre L. N. Souza, Joao Januario, S. Rossi, A. Chiuchiarelli, J. Reis, S. Makovejs, D. Mello","doi":"10.1109/IMOC.2017.8121038","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121038","url":null,"abstract":"In this paper, we investigate the performance of unrepeatered optical transmission using nonlinear compensation, and dynamic equalization enhanced by forward error correction (FEC) feedback. The digital back-propagation (DBP) algorithm is used for nonlinear compensation, while error correction is provided by spatially-coupled low-density parity-check (SC-LDPC) codes. The technique is experimentally evaluated by the unrepeatered WDM transmission of 16×400 Gb/s single-carrier channels (66 GBd DP-16QAM) within a 75 GHz grid over 403 km (64.7 dB span loss), achieving 2.58 Pb/s km. The results indicated Q2 margins to the FEC limit of up to 0.4 and 0.5 dB for 3 and 6-dBm average launch powers, respectively, exhibiting a tangible improvement compared with previous works.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"46 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":"121984978","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: 3
Magnetic group analysis of electromagnetic modes in C2ν (C2)-symmetric graphene array C2ν (C2)对称石墨烯阵列中电磁模式的磁群分析
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121134
V. Dmitriev, Luis P. V. Matos
{"title":"Magnetic group analysis of electromagnetic modes in C2ν (C2)-symmetric graphene array","authors":"V. Dmitriev, Luis P. V. Matos","doi":"10.1109/IMOC.2017.8121134","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121134","url":null,"abstract":"In this work we analyse properties of symmetric devices with magnetic media by using magnetic group tools. The point-group theory has been used frequently to describe electromagnetic responses of nonmagnetic symmetric components. In a structure with magnetic medium biased by a magnetic field, usually some of the symmetry transformations of the corresponding nonmagnetic component are lost and non-unitary transformations appear. This changes the algebraic structure of the group and also changes its representations. We develop a general method of application of the theory of corepresentations of magnetic groups using as an example a current density modes in a magnetized graphene array described by magnetic symmetry C2v (C2).","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"27 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":"121989998","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
Characterization of the occlusal splints using optical fiber sensors 用光纤传感器表征咬合夹板
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121082
P. F. Nascimento, A. P. Franco, R. Fiorin, L. B. Gomes, V. de Oliveira, I. Abe, H. Kalinowski
{"title":"Characterization of the occlusal splints using optical fiber sensors","authors":"P. F. Nascimento, A. P. Franco, R. Fiorin, L. B. Gomes, V. de Oliveira, I. Abe, H. Kalinowski","doi":"10.1109/IMOC.2017.8121082","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121082","url":null,"abstract":"In this work we report the development of a method to characterize occlusal splints using fiber Bragg grating sensors. The occlusal splints are used to treatment for muscle pain resulting from parafunctional habit and or occlusal alterations. The gratings are inserted in to the occlusal splints in order to measure the forces applied to the splints. The analyses are performed in a volunteer with bruxism, in order to obtain the sensibility to the applied load. The analyses of the force distribution in the splint are realized in vivo and the results indicate that the proposed method is a powerful tool for the characterization of occlusal splints.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"21 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":"122808765","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
Separation of temperature and strain in a single fiber BOTDA system by pseudo-inverse approach 伪逆法分离单纤维BOTDA系统的温度和应变
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121068
Felipe Lima dos Reis Marques, C. Floridia, Thayane Alves Almeida, A. A. Leonardi, F. Fruett
{"title":"Separation of temperature and strain in a single fiber BOTDA system by pseudo-inverse approach","authors":"Felipe Lima dos Reis Marques, C. Floridia, Thayane Alves Almeida, A. A. Leonardi, F. Fruett","doi":"10.1109/IMOC.2017.8121068","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121068","url":null,"abstract":"In this paper, we propose an approach to separate the temperature and strain information in a single fiber BOTDA system. The basis of this method is a mathematical theory to invert non-square matrices, called as Moore-Penrose pseudo-inverse. The system was tested both theoretically and experimentally in order to compare the use of a single optical band used to make a multi-wavelength measurement with other reference, which used two optical bands (O and C). The results demonstrated that this approach is suitable for recovering the temperature and strain data.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"52 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":"125070285","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
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