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2013 International Conference on Microwave and Photonics (ICMAP)最新文献

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Performance analysis of III–V based long wavelength QWIP 基于III-V的长波QWIP性能分析
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733550
M. A. Billaha, M. Das
{"title":"Performance analysis of III–V based long wavelength QWIP","authors":"M. A. Billaha, M. Das","doi":"10.1109/ICMAP.2013.6733550","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733550","url":null,"abstract":"Aim of the present work is to investigate the performance of GaAs/AlxGa1-xAs quantum well infrared photodetector (QWIP) using theoretical modeling via transfer matrix method and using professional device simulation software, APSYS. Model is verified with experimental data and various performance characteristics are obtained for intersubband transition in QWIP. Peak absorption occurs at wavelength of 8.75 μm using APSYS and at 8.52 μm using theoretical calculation.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131606990","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
A novel CPW fed Sierpinski carpet fractal UWB slot antenna 一种新型CPW馈电Sierpinski地毯分形超宽带缝隙天线
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733460
Babu Lal Shahu, N. Chattoraj, S. Pal
{"title":"A novel CPW fed Sierpinski carpet fractal UWB slot antenna","authors":"Babu Lal Shahu, N. Chattoraj, S. Pal","doi":"10.1109/ICMAP.2013.6733460","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733460","url":null,"abstract":"A Novel coplanar waveguide (CPW) fed Ultra Wideband (UWB) antenna is presented. The proposed antenna is designed on RT/duriod 5880 substrate with thickness of 1.57 mm and relative permittivity of 2.2 having loss tangent 0.0009 using a second iteration Sierpinski carpet fractal with overall dimension of 37 mm × 46 mm × 1.57 mm. The designed antenna offers a good impedance bandwidth from 3.1 to 11 GHz. The presented antenna has omnidirectional radiation pattern and good gain flatness suitable for UWB applications.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123589905","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: 4
Design of low-loss waveguides and devices for the emerging THz technologies 新兴太赫兹技术的低损耗波导和器件设计
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733454
B. Rahman, M. Uthman, A. Quadir, C. Markides, C. Themistos
{"title":"Design of low-loss waveguides and devices for the emerging THz technologies","authors":"B. Rahman, M. Uthman, A. Quadir, C. Markides, C. Themistos","doi":"10.1109/ICMAP.2013.6733454","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733454","url":null,"abstract":"A rigorous full-vectorial modal solution approach based on the computationally efficient finite element method is used to find the propagation properties of THz waveguides. Design approaches are presented to reduce the modal loss of such waveguides. Designs of several THz devices, including quantum cascade lasers, power splitters and narrow-band filters are also presented.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124629001","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
A novel miniaturized, wideband, high directivity microstrip coupler on FR4 一种新型小型化、宽频带、高指向性的FR4微带耦合器
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733509
Vinit Kumar Gupta, P. Kumar, C. Rao
{"title":"A novel miniaturized, wideband, high directivity microstrip coupler on FR4","authors":"Vinit Kumar Gupta, P. Kumar, C. Rao","doi":"10.1109/ICMAP.2013.6733509","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733509","url":null,"abstract":"Directional couplers realized in microstrip parallel coupled line configuration exhibits very poor directivity. Inhomogeneous nature of microstrip circuits generate even and odd modes of wave propagation having different phase velocities, which in turn leads to the degradation in directivity. This paper presents the design and development of a compact, wideband, low insertion loss 20 dB microstrip coupler on FR4 substrate having better than 25 dB directivity at L band. Idea is based on the fact that the wiggly or slotty structure raises the odd mode inductance more strongly than that of the even mode due to the different field distributions between both modes and equalizes the even and odd mode characteristic impedances. Reactive loading based slow wave structure is used to further miniaturize the circuit. Directivity of better than 28 dB, maximum insertion loss of 0.4 dB, coupling flatness of ± .25 dB and 25 % reduction in size w.r.t. conventional parallel coupled line coupler were observed in the fabricated circuit over the band of 1250±500 MHz.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127392561","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
Compact dual segment cylindrical dielectric resonator antenna for X-band applications 用于x波段应用的紧凑型双段圆柱形介质谐振器天线
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733497
B. Sahu, R. Singh, S. Singh, P. Tripathi
{"title":"Compact dual segment cylindrical dielectric resonator antenna for X-band applications","authors":"B. Sahu, R. Singh, S. Singh, P. Tripathi","doi":"10.1109/ICMAP.2013.6733497","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733497","url":null,"abstract":"The simulation and experimental studies of a compact dual segment cylindrical dielectric resonator antenna (DRA) for X-band applications are presented in this paper. The antenna consists of Teflon (εr = 2.1) as lower segment and ceramic material (Sr La2 Mg2 W2 O12) of dielectric constant εr = 22 and loss tangent tan δ = 0.0021 as upper segment. The simulation study of the antenna is carried out using Ansoft's HFSS software. Parametric study of the antenna has been carried out by varying the Teflon and probe heights. The simulated and measured bandwidths of the proposed antenna are 1.11 GHz and 1.69 GHz respectively whereas corresponding values of average gain are 6.39 dB and 6.43 dB. The broadside radiation patterns are obtained (in both E-and H-planes) in the applicable frequency range with fairly low cross-polarization levels in E-plane. The experimental results are in good agreement with simulated results.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130558855","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
Effect of Ge-composition on the frequency response of a thin layer Si1−yGey avalanche photodiode 锗成分对薄层Si1−yGey雪崩光电二极管频率响应的影响
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733538
K. Majumder, N. Das
{"title":"Effect of Ge-composition on the frequency response of a thin layer Si1−yGey avalanche photodiode","authors":"K. Majumder, N. Das","doi":"10.1109/ICMAP.2013.6733538","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733538","url":null,"abstract":"Bandwidth calculation of Si1-yGey n+-i-p+ avalanche photodiode (APD) is described for multiplication layer down to tens of nanometers considering dead-space effect. In the analysis, the depletion region is discretized into equal energy segments to take into account the discontinuous nature of impact ionization in the multiplication layer due to dead-space effect, and carrier diffusion from undepleted regions is considered to study the effect of low bias on the frequency response. Carrier distribution within the structure is obtained by numerical solution of coupled equations and recurrence relations. The computed results are used to investigate the effect of Ge-composition (y) on the bandwidth of a Si1-yGey APD having thin multiplication layer. Results show that at high gain region, for a fixed applied bias, frequency response decreases with the increase in Ge-content. It is also seen that at moderate gain region, if the bandwidth is RC dominated then the bandwidth decreases with increase in Ge-content.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130601938","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
MATLAB simulink based test bed of QW LASER for optical communication system 基于MATLAB simulink的光通信系统QW激光器试验台
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733515
Reena Sharma, S. Raghuwanshi
{"title":"MATLAB simulink based test bed of QW LASER for optical communication system","authors":"Reena Sharma, S. Raghuwanshi","doi":"10.1109/ICMAP.2013.6733515","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733515","url":null,"abstract":"Optical fiber is the medium in which signals can be transmitted and distributed with high bandwidth and very low losses. The main optical sources are LED and LASER. A semiconductor laser typically has spectral width about 20 to 100 times less compared to LED. The laser was the first device capable of amplifying light waves themselves. The emitted laser light is a spatially coherent, narrow low-divergence beam. There are lasers that emit a broad spectrum of light or emit different wavelengths of light simultaneously. Thus improving the efficiency of lasers is of great importance through the entire optoelectronics field, as laser based communication can support much higher data rates. In this work Quantum-Well LASER model based on the standard rate equations is being developed for analyzing and improving the efficiency using the MATLAB Simulink platform. The presented model can be incorporated for the simulation of the optimized optical system for future need of high data rate.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"2017 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131682974","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
Electric field effect on intersubband oscillator strength of semiconductor quantum disk 电场对半导体量子盘子带间振荡强度的影响
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733541
S. Bhattacharyya, A. Deyasi, N. Das
{"title":"Electric field effect on intersubband oscillator strength of semiconductor quantum disk","authors":"S. Bhattacharyya, A. Deyasi, N. Das","doi":"10.1109/ICMAP.2013.6733541","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733541","url":null,"abstract":"In this paper, intersubband transition energy and oscillator strength of a semiconductor quantum disk are analytically computed by solving time-independent Schrödinger equation in presence of axial electric field. Results show that transition energy increases with increase of thickness but decreases with increasing radius. The external field alters the potential energy profile of the structure and thus controls the intersubband oscillator strength inside the disk. The oscillator strength between the two lowest subbands decreases with electric field, and increases with thickness of the disk. Results are computed considering first-order band nonparabolicity, and compared with parabolic overestimation. Change in oscillator strength indicates the possibility of wavelength tuning by electric field.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125548628","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
RF emissions from laser breakdown of target materials 激光击穿目标材料产生的射频辐射
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733512
L. Kumar, E. Manikanta, C. Leela, P. P. Kiran
{"title":"RF emissions from laser breakdown of target materials","authors":"L. Kumar, E. Manikanta, C. Leela, P. P. Kiran","doi":"10.1109/ICMAP.2013.6733512","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733512","url":null,"abstract":"The detection and analysis of the radio frequency (RF) waves emitted by the nanosecond laser breakdown of atmospheric air and metal (aluminum and copper) targets is presented. The emissions from different target materials were observed to be spectral selective with specific dependence on laser and antenna polarization. From the laser produced plasma (LPP) of atmospheric air, the RF output was found to be increasing with the input laser energy up to certain value, beyond which almost no emission was observed over the frequency range used in this study. This effect is attributed to the modification in the net induced dipole moment due to the multiple plasma sources in the LPP at higher input laser energies. Between the metals studied, RF emissions from copper were relatively higher than that of aluminum because of the better plasma conductivity of copper. Further studies may lead to an efficient technique for standoff material identification from the RF signature peaks.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"60 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126089763","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
Estimation of crosstalk in α-index profile multicore fibers for optical interconnect applications 用于光互连的α-折射率型多芯光纤串扰估计
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733522
J. Mishra, V. Priye
{"title":"Estimation of crosstalk in α-index profile multicore fibers for optical interconnect applications","authors":"J. Mishra, V. Priye","doi":"10.1109/ICMAP.2013.6733522","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733522","url":null,"abstract":"A space division multiplexed 1 × 4 and 2 × 4 multicore fiber with α-index profile is designed to meet the stringent requirements of high bandwidth density optical interconnects. By employing the proposed model, the effect of index parameter α on the crosstalk of multicore fiber is investigated under bent condition. Attributes of bend induced crosstalk is evaluated for variation in core to core pitch distances.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123849505","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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