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Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference最新文献

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Phase dispersion characterization of fibre gratings 光纤光栅的相位色散特性
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509683
S. Barcelos, M. Zervas, R. Laming, D. Payne
{"title":"Phase dispersion characterization of fibre gratings","authors":"S. Barcelos, M. Zervas, R. Laming, D. Payne","doi":"10.1109/SBMOMO.1995.509683","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509683","url":null,"abstract":"A high wavelength resolution set-up based on an interferometric technique has been used to provide accurate phase dispersion and time delay measurements of fibre photorefractive gratings. Standard and highly chirped gratings has been characterized and the results used to develop a chirped fibre filter which can be used for dispersion-compensation in long fibre telecommunications links, thus greatly enhancing the capacity of the existing fibre base.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115838467","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
Eigenmodes in open coaxial cylindrical resonators 开放式同轴圆柱谐振器的本征模
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509722
J. Barroso, P. J. Castro
{"title":"Eigenmodes in open coaxial cylindrical resonators","authors":"J. Barroso, P. J. Castro","doi":"10.1109/SBMOMO.1995.509722","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509722","url":null,"abstract":"The electrodynamical properties of open coaxial cylindrical resonators using a partially-conical inner rod are examined on the basis of a resonance criterion for the eigenmodes. Owing to the spectral rearrangement arising from the presence of a coaxial insert, it turns out possible to isolate the desired operating mode from its neighboring competitors. The modelling of an especially designed cavity demonstrates that the corresponding TE-mode spectrum is markedly diluted in the 5-10 GHz range. The coaxial structure with a conical inner rod, is shown to be highly selective, and can find useful applications in high-power gyrotrons and frequency-tunable resonators.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117134933","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
Narrowband solid state acousto-optic tunable filter 窄带固态声光可调谐滤波器
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509636
A. R. Jha
{"title":"Narrowband solid state acousto-optic tunable filter","authors":"A. R. Jha","doi":"10.1109/SBMOMO.1995.509636","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509636","url":null,"abstract":"The paper reveals a unique design for a narrowband tunable optical filter employing acousto-optic technology. The filter provides tuning capability over the entire blue-green spectral region within one second. The design configuration offers maximum economy, remarkable versatility, uniform spectral response and constant narrow bandwidth less than 0.3 nm. The proposed filter architecture uses state-of-the art technology and components to meet the tuning speed and resolution requirements.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124366908","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
Efficient coupling of a graded index glass guide to a polymer guide by means of a tapered transition 渐变折射率玻璃导向与聚合物导向通过锥形过渡的有效耦合
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509716
D. Grando, L. Palchetti, S. Sottini, E. Giorgetti
{"title":"Efficient coupling of a graded index glass guide to a polymer guide by means of a tapered transition","authors":"D. Grando, L. Palchetti, S. Sottini, E. Giorgetti","doi":"10.1109/SBMOMO.1995.509716","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509716","url":null,"abstract":"A new four layer tapered coupler (FLTC) has been studied and tested, able to transfer light efficiently from a monomode fiber to a polymer film guide by means of an auxiliary graded index glass waveguide. A simple theory has been developed to calculate the maximum efficiency of these structures. Experiments have been performed at /spl lambda/=1.321 /spl mu/m on several FLTC samples, containing K/sup +/-Na/sup +/ ion-exchanged glass waveguides and spin coated poly-3BCMU films. Insertion losses in the range 3-6.5 dB have been measured, depending on the taper configuration. The agreement between theoretical and experimental data is good, provided that a suitable ripple of the taper profile is assumed.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124426471","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
Comparative performance of the reduced integration penalty approach for removing spurious FE solutions of dielectric waveguides 减少积分惩罚法去除介电波导杂散有限元解的比较性能
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509671
M.B.F. Chaves, C.G. Migliora, H.J.C. Barbosa
{"title":"Comparative performance of the reduced integration penalty approach for removing spurious FE solutions of dielectric waveguides","authors":"M.B.F. Chaves, C.G. Migliora, H.J.C. Barbosa","doi":"10.1109/SBMOMO.1995.509671","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509671","url":null,"abstract":"The reduced integration penalty method and the use of vector interpolation are two basically different new approaches for eliminating spurious finite element solutions of dielectric waveguides. Their computational performances are compared in terms of the convergence of the eigenvalues considering the mesh densities, computation times and storage demands, and highlighting their significant features.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124727120","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
Frequency selective fade effects and bandwidth considerations in COST 235 成本235中的频率选择性衰减效应和带宽考虑
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509605
T. Tjelta
{"title":"Frequency selective fade effects and bandwidth considerations in COST 235","authors":"T. Tjelta","doi":"10.1109/SBMOMO.1995.509605","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509605","url":null,"abstract":"Working Group 1 in the COST 235 Project study frequency selective effects and their impact on digital radio links. For fixed communication links the trend for many years has been of increasing the capacity without necessarily a larger bandwidth, e.g., 155 Mbit/s or 622 Mbit/s links in the synchronous digital hierarchy (SDH) network. This lead to complex techniques that are more sensitive to distortion caused by propagation as well as other sources. The techniques used to achieve a greater transmission capacity are higher levels of modulation by combining more bits into a single symbol and by use of dual polarisation. The multipath mitigation techniques cover various diversity reception schemes, transmit power control, channel equalisers, and error correction coding. A deeper understanding of multipath propagation mechanisms is needed both for the development of the various prediction techniques as well as the development of equipment. The Working Group has compiled a database for testing purposes of existing and new prediction methods. It has been of particular importance to include measurements of performance, e.g. bit error rates (BER), as part of the data to be able to give recommendations regarding the merits of various prediction methods.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124062621","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
A 2.488 Gb/s GaAs 1:4/1:16 demultiplexer IC with skip circuit for SONET STS-12/48 systems 2.488 Gb/s GaAs 1:4/1:16解复用电路，用于SONET STS-12/48系统
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509598
T. Abrão, F. S. Correra
{"title":"A 2.488 Gb/s GaAs 1:4/1:16 demultiplexer IC with skip circuit for SONET STS-12/48 systems","authors":"T. Abrão, F. S. Correra","doi":"10.1109/SBMOMO.1995.509598","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509598","url":null,"abstract":"A 1:4/1:16 demultiplexer IC with an integrated skip circuit has been successfully designed and fabricated employing SCFL standard cells based on 1 /spl mu/m MESFET foundry technology. The circuit was designed to operate at up to 2.5 Gb/s with low power dissipation. The demultiplexer employs a tree type architecture based on 1:2 demux blocks using tristage flip-flops. A new skip circuit without re-timing was proposed and integrated in the demultiplexer for frame alignment. The proposed skip circuit demonstrated its effectiveness and the IC operated either as a 1:4 or a 1:16 demultiplexer at up to 2.5 Gb/s with a power dissipation of 1 W. This IC is applicable for signal processing on SONET STS-12/48 optical communication systems.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123975763","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
Nonlinear propagation in an optical fractal structure 光学分形结构中的非线性传播
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509621
M. Bertolotti, F. Moretti, C. Sibilia, P. Masciulli
{"title":"Nonlinear propagation in an optical fractal structure","authors":"M. Bertolotti, F. Moretti, C. Sibilia, P. Masciulli","doi":"10.1109/SBMOMO.1995.509621","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509621","url":null,"abstract":"We study the nonlinear propagation and the spatial distribution of a TE field in an integrated structure realized by alternating two dielectric layers of different Kerr-type nonlinear materials, whose refractive index is such that the highest refractive layers belong to a Canter set.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115073201","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
Optimization of a MESFET RF power amplifier using a bias dependent large signal MESFET model 基于偏置相关大信号MESFET模型的MESFET射频功率放大器优化
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509648
S. Munoz, J. L. Sebastian
{"title":"Optimization of a MESFET RF power amplifier using a bias dependent large signal MESFET model","authors":"S. Munoz, J. L. Sebastian","doi":"10.1109/SBMOMO.1995.509648","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509648","url":null,"abstract":"A large signal quasistatic MESFET model with bias dependent elements is derived from both experimental S parameters and DC measurements. As an application, this model is used in the design of a MESFET power amplifier. The analysis and gain optimization of the amplifier is performed using the describing function technique. Maximum gain is obtained by the determination of the optimum bias device conditions. The experimental results show excellent agreement with the CAD simulation.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123098636","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
Microwave approach to a class of highly irregular fiber optics 微波法处理一类高度不规则的光纤
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509616
Huang Hung-Chin
{"title":"Microwave approach to a class of highly irregular fiber optics","authors":"Huang Hung-Chin","doi":"10.1109/SBMOMO.1995.509616","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509616","url":null,"abstract":"Variably coupled-mode theory developed decades ago in the microwave art is rediscovered to be a powerful mathematical tool in dealing with highly irregular fiber optics, whose analytic solution would have been extremely difficult to obtain if adopting a regular optical method. Examples treated in this presentation are the author's new invention of a set of fiber-optic analogues of bulk-optic wave plates. Experimental data exactly confirm theoretical predictions.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116540797","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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