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2008 2nd ICTON Mediterranean Winter最新文献

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Electrochemical growth and physico-chemical characterization in organic medium of Nb2O5 thin films Nb2O5薄膜在有机介质中的电化学生长及物理化学表征
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773111
V. Figa, B. Kulyk, M. Bakasse, B. Sahraoui
{"title":"Electrochemical growth and physico-chemical characterization in organic medium of Nb2O5 thin films","authors":"V. Figa, B. Kulyk, M. Bakasse, B. Sahraoui","doi":"10.1109/ICTONMW.2008.4773111","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773111","url":null,"abstract":"Investigations about the energetics and the electrical properties of niobium thin film, electrochemically grown, were performed in an organic solution of acetonitrile and lithium perchlorate. The study of the energetics of the Nb2O5/organic solution interface was performed by means of a non-destructive optical technique, photocurrent spectroscopy. By means of this technique, it was possible estimating the value of the flat band potential and locating conduction and valence band. A more cathodic value of flat band potential in respect with acidic solution was found in organic medium. From impedance spectra, the electrical circuit that gives best fitting values is constituted by two resistances in parallel with two constant phase elements and in series with the resistance of the electrolyte. On considering the exponential coefficient, the constant phase elements model distorted capacitances.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"1165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121047574","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
Pre-planned Optical Burst Switching routing strategies 预先规划的光突发交换路由策略
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773125
A. Barradas, M. Medeiros
{"title":"Pre-planned Optical Burst Switching routing strategies","authors":"A. Barradas, M. Medeiros","doi":"10.1109/ICTONMW.2008.4773125","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773125","url":null,"abstract":"This paper addresses the problem of pre-planned optical burst switching (OBS) routing strategies. Pre-planned OBS routing strategies can be applied as static routes in normal network operation without the need for resource-update signalling messages, combined with dynamic contention resolution schemes, or when the network tries to recover from a congestion state. In this paper, we discuss the applicability and performance improvement, when compared with shortest path routing, of two path selection strategies, taking into account different network topologies and strategy parameters.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114910422","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
QoS-based RWA in DWDM optical networks using genetic algorithms 基于遗传算法的DWDM光网络qos RWA
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773098
Y. Kavian, H. Rashvand, M. Leeson, W. Ren, E. Hines, M. Naderi
{"title":"QoS-based RWA in DWDM optical networks using genetic algorithms","authors":"Y. Kavian, H. Rashvand, M. Leeson, W. Ren, E. Hines, M. Naderi","doi":"10.1109/ICTONMW.2008.4773098","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773098","url":null,"abstract":"This paper presents the integration of quality of service (QoS) requirements in routing and wavelength assignment (RWA) problems to design wavelength-routed dense wavelength division multiplexing (DWDM) optical networks. A genetic algorithm (GA) optimization approach is employed to solve this complex and multi-constraint problem under heavy load demand matrices employing the COST239 test bench. Simulation results demonstrate that the GA is efficient to establish both bandwidth and propagation delay optimization lightpaths.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122172309","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
Comparison of unipolar codes for DS-OCDMA system DS-OCDMA系统单极码的比较
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773064
A. Farhat, M. Menif, C. Lepers, H. Rezig, P. Gallion
{"title":"Comparison of unipolar codes for DS-OCDMA system","authors":"A. Farhat, M. Menif, C. Lepers, H. Rezig, P. Gallion","doi":"10.1109/ICTONMW.2008.4773064","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773064","url":null,"abstract":"In this work, we describe a Direct Sequence Optical Codes Division Multiple Access (DS-OCDMA) system using unipolar codes which are the Prime Sequence (PS), the Quadratic Codes (QC) and the Extended Quadratic Codes (EQC). The performances comparison of the three family codes, for coherent and incoherent source, shows that the EQC codes offer better results on term of Bit Error Rate (BER) than the two others family codes. In fact this family codes presents the better correlation properties. Moreover, we demonstrate that by controlling the optical bandwidth of the encoders/decoders, we can improve system performances in the case of incoherent source.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117015441","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
Erbium-activated silica-hafnia: A reliable photonic system 铒活化硅-铪:一个可靠的光子系统
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773075
G. Alombert-Goget, C. Armellini, S. Bhaktha, B. Boulard, A. Chiappini, A. Chiasera, C. Duverger-Arfuso, P. Féron, M. Ferrari, R. Gonçalves, P. T. Huy, Y. Jestin, T. N. Khiem, L. Minati, A. Monteil, E. Moser, G. Nunzi Conti, R. Osellame, S. Pelli, A. Quandt, R. Ramponi, D. N. Rao, G. Righini, G. Speranza, K. Vishnubhatla
{"title":"Erbium-activated silica-hafnia: A reliable photonic system","authors":"G. Alombert-Goget, C. Armellini, S. Bhaktha, B. Boulard, A. Chiappini, A. Chiasera, C. Duverger-Arfuso, P. Féron, M. Ferrari, R. Gonçalves, P. T. Huy, Y. Jestin, T. N. Khiem, L. Minati, A. Monteil, E. Moser, G. Nunzi Conti, R. Osellame, S. Pelli, A. Quandt, R. Ramponi, D. N. Rao, G. Righini, G. Speranza, K. Vishnubhatla","doi":"10.1109/ICTONMW.2008.4773075","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773075","url":null,"abstract":"Sol gel-derived silica-hafnia is a reliable and flexible binary system that has proved to be suitable for rare earth doping and fabrication of amorphous and glass ceramic planar waveguides as well as for improving thermal stability of spherical microresonators. Here we present an overview concerning fabrication protocols and structural, optical and spectroscopic assessment of SiO2-HfO2 waveguides activated with Er3+ ions. In order to put in evidence the reliability and versatility of the silica-hafnia system for photonics applications three different confined structures are briefly presented: i) amorphous waveguides; ii) glass-ceramic waveguides; iii) coated microspheres.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"37 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128228827","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
Performance study of high bit rate indoor wireless optical networks 高比特率室内无线光网络的性能研究
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773089
M. Najjar, H. Rezig
{"title":"Performance study of high bit rate indoor wireless optical networks","authors":"M. Najjar, H. Rezig","doi":"10.1109/ICTONMW.2008.4773089","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773089","url":null,"abstract":"In this paper, we propose a high bit rate system by using a LASER diode in wireless optical communication technique. Two applications are studied, the home network and local area network. For the different applications, the quality of transmission depends on the system parameters that must be selected by precision. From numerical simulation results, it is confirmed that as the bit rate increase as the system parameters selection becomes more critical. The lasers used in these systems have a high power output and good directivity which minimize the loss of the link in comparison with the classical emitters utilized in the infrared wireless optical communication links. Our system can give a good quality of transmission with a bit rate until 40 Gbit/s.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114832905","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
A novel design of MMI 1530/1565 nm wavelength division demultiplexer based on effective method 一种基于有效方法的mmi1530 / 1565nm波分解复用器的新设计
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773055
S. Triki, M. Najjar, H. Rezig
{"title":"A novel design of MMI 1530/1565 nm wavelength division demultiplexer based on effective method","authors":"S. Triki, M. Najjar, H. Rezig","doi":"10.1109/ICTONMW.2008.4773055","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773055","url":null,"abstract":"In this paper, we designed a novel 1times2 1530/1565 nm wavelength division demultiplexer based on silicon-on-insulator (SOI) substrate. Our model is based on MMI region with a tilted facet. Tuning the angle of the tilted MMI facet, can adjust the output wavelength, power ratio and polarization deviations. The simulations of the designed structure show that the insertion loss is -0.58 dB and -0.23 dB for 1530 nm and 1565 nm respectively and the extinction ratio is -3.42 and -13.86 dB. These results are obtained for component length 14.175 mm and width 30 mum.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134117671","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
Photochemical properties of side-chain coumarin polymers 侧链香豆素聚合物的光化学性质
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773084
O. Krupka, F. Derf, D. Gindre, M. Sallé
{"title":"Photochemical properties of side-chain coumarin polymers","authors":"O. Krupka, F. Derf, D. Gindre, M. Sallé","doi":"10.1109/ICTONMW.2008.4773084","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773084","url":null,"abstract":"Photosensitive materials attract many attention due to their potential application in optical devices such as optical data storage, optical communication, ...[1]. Coumarines and their analogues are well-known for their reversible photoinduced cyclodimerisation properties, leading to cyclobutane-based dimers (scheme) [2]. This equilibrium can be tuned according to the wavelength which is applied, and the resulting systems are of course dramatically structurally and electronically different. Therefore, the coumarine system offers a unique opportunity for applications in various fields involving conjugated molecular frameworks. In the area of photonics and nonlinear optics one of the great advantages of functionalized materials lies on the photochemical properties of the polymer. In the present work, homo- and copolymers built from the free radical polymerization of methacrylic monomers incorporating a coumarin side-group have been synthesized and structurally characterized. Results of photochemical and optical activities of the corresponding polymers will be presented.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134166068","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
About nanometer sized analogues of basic electronic and optical components 关于基本电子和光学元件的纳米尺寸类似物
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773047
A. Quandt, C. Ozdoğan, M. Ferrari, G. Speranza
{"title":"About nanometer sized analogues of basic electronic and optical components","authors":"A. Quandt, C. Ozdoğan, M. Ferrari, G. Speranza","doi":"10.1109/ICTONMW.2008.4773047","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773047","url":null,"abstract":"We discuss a downsizing of optical components into the nanometer range. It presupposes the substitution of photons by ballistic electrons, but it also requires a simple and robust concept to assemble the analogues of basic electronic and optical components on such a tiny length scale. Here, one of the most promising candidate schemes employs graphene as a basic nanosubstrate. We elucidate the suggested behaviour of graphene as an electronic metamaterial [1], and show that other desired electronic or optical functionalities may be obtained through a patterning with sub-nanometer sized boron clusters [2].","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132257470","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
Compensating the effects of light attenuation in confocal microscopy by histogram modelling techniques 用直方图建模技术补偿共聚焦显微镜中光衰减的影响
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773118
S. Stanciu, J. Friedmann
{"title":"Compensating the effects of light attenuation in confocal microscopy by histogram modelling techniques","authors":"S. Stanciu, J. Friedmann","doi":"10.1109/ICTONMW.2008.4773118","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773118","url":null,"abstract":"Confocal Laser Scanning Microscopy (CLSM) enables us to capture images representing optical section on the volume of a specimen. The images captured from different layers have a different contrast: the images obtained from the deeper layers of the specimen will have a lower contrast and will present a certain degree of blur in respect to the images obtained from the topmost layers. The main reasons responsible for the effects described above are light absorption and scattering by the objects and particles that are present in the volume through which the light passes. Also light attenuation can be caused by the inclination of the observed surface. In the case of the surfaces that have a steep inclination the reflected light will have a different direction than the one of the detector. We propose a technique that can be used to compensate the effects of light attenuation based on histogram operations. We will consider two types of histogram operations: histogram equalization and histogram specification. A discussion of the results that were obtained using the two types of operations will be presented.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"348 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116318115","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: 8
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