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2008 2nd ICTON Mediterranean Winter最新文献

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Simulation of mm-wave over fiber employing optical single sideband modulation combined with subcarrier multiplexing 利用光单边带调制结合子载波复用的毫米波在光纤上的仿真
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773081
R. Avó, P. Laurêncio, M. Medeiros
{"title":"Simulation of mm-wave over fiber employing optical single sideband modulation combined with subcarrier multiplexing","authors":"R. Avó, P. Laurêncio, M. Medeiros","doi":"10.1109/ICTONMW.2008.4773081","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773081","url":null,"abstract":"Access infrastructures combining fiber optic and wireless technologies can provide the necessary broadband access required by the convergence of wireless and wired networks. In this paper we discuss a mm-wave radio over fiber (RoF) optical access network architecture, which combines radio subcarrier multiplexing techniques to improve system efficiency with fiber dispersion mitigation provided by optical single sideband modulation techniques. The RoF access network is discussed and analyzed through simulation.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"177 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":"120913165","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
An integrated availability analysis of RoF networks RoF网络的综合可用性分析
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773049
G. Castañón, A. Aragón-Zavala, R. Ramirez-Velarde, G. Campuzano, O. Tonguz
{"title":"An integrated availability analysis of RoF networks","authors":"G. Castañón, A. Aragón-Zavala, R. Ramirez-Velarde, G. Campuzano, O. Tonguz","doi":"10.1109/ICTONMW.2008.4773049","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773049","url":null,"abstract":"The emerging vehicular applications such as active safety, infotainment, interactive games, and wireless Internet access might dictate very high reliability and availability in future radio over fiber networks. This paper provides an integrated analysis of availability of the optical fiber network and the wireless network, in future radio over fiber systems. We present an integrated comparative analysis of network topologies for radio over fiber networks. In particular, we present results that compare different topologies such as multilevel rings and hybrid multilevel ring-stars in terms of availability. Protection schemes are also considered and results on the protected versions of the aforementioned topologies are also presented.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"17 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":"120937934","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
Spatial solitons in chiral nematic liquid crystals 手性向列液晶中的空间孤子
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773066
U. Laudyn, M. Kwaśny, M. Karpierz
{"title":"Spatial solitons in chiral nematic liquid crystals","authors":"U. Laudyn, M. Kwaśny, M. Karpierz","doi":"10.1109/ICTONMW.2008.4773066","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773066","url":null,"abstract":"We demonstrate experimentally the existence of spatial solitons in a chiral nematic liquid crystal planar cell. Due to the optical reorientational nonlinearity there were created for a light power of a few milliwatts. The low absorption allows us to observe soliton propagation distance over lengths of a few millimeters.","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":"129198723","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
Integrated networks of wireless and fixed telecommunication 无线和固定通信的综合网络
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773087
Y. Gramakov, V. Shevtsov
{"title":"Integrated networks of wireless and fixed telecommunication","authors":"Y. Gramakov, V. Shevtsov","doi":"10.1109/ICTONMW.2008.4773087","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773087","url":null,"abstract":"This article deals with the following topics: radio communication, cellular communication, mobile communication, integrated networks, wireless communication, global satellite system, and global positioning system.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"121 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":"132055110","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
Digitization of chaotic signal for reliable communication in non-ideal channels 非理想信道下混沌信号的数字化可靠通信
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773123
R. Kharel, S. Rajbhandari, Zabih Ghassemlooy, K. Busawon
{"title":"Digitization of chaotic signal for reliable communication in non-ideal channels","authors":"R. Kharel, S. Rajbhandari, Zabih Ghassemlooy, K. Busawon","doi":"10.1109/ICTONMW.2008.4773123","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773123","url":null,"abstract":"A new method of chaotic communication system based on digitization of the chaotic signal is proposed. The digitally encoded chaotic signal is transmitted through a practical channel and recovered at the receiver. Simulation results show that despite being errors in the received bit sequence, the observer is able to synchronise and recover message signal with high accuracy provided bit error rate is < 10-4. The proposed method is compatible with the existing digital communication system and hence could be implemented in real scenario with no or little modification in the existing infrastructure.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"19 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":"127910211","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
Photonic-corral-mode quantum ring lasers investigated by laser scanning microscopy and near field microscopy 用激光扫描显微镜和近场显微镜研究了光子圈模量子环激光器
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773051
G. Stanciu, S. Stanciu, R. Hristu, D.K. Kim, O. Kwon
{"title":"Photonic-corral-mode quantum ring lasers investigated by laser scanning microscopy and near field microscopy","authors":"G. Stanciu, S. Stanciu, R. Hristu, D.K. Kim, O. Kwon","doi":"10.1109/ICTONMW.2008.4773051","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773051","url":null,"abstract":"Ultralow threshold microcavity lasers are ideal candidates for high-density optical interconnect light sources. Although they have been extensively studied for the last decade, muA-level electro-pumped quantum confined lasers are still under investigation. Photonic-corral-mode quantum ring (PQR) lasers with the linewidth narrower than 0.55 generate micro-to-nano-ampere thresholds, and become ideal for CMOS-driven high-density emitter arrays for intra-chip optical interconnect as well as other applications such as displays. By using laser beam induced current technique (LBIC) technique in laser scanning microscopy (LSM) we investigated the photocurrent confinement in the laser structure. The photocurrent map gives the possibility to analyze the laser structure uniformity. The emission spectra of a PQR laser was investigated by using of microscopic optical fiber probe.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"38 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":"116195358","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
The magneto-optic rotation in magnetised plasma study of magneto-optic isolator 磁光隔离器磁化等离子体中的磁光旋转研究
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773069
S. Naima Ghoutia, B. Tayeb
{"title":"The magneto-optic rotation in magnetised plasma study of magneto-optic isolator","authors":"S. Naima Ghoutia, B. Tayeb","doi":"10.1109/ICTONMW.2008.4773069","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773069","url":null,"abstract":"In this article, we propose a study of the propagation of an electromagnetic field in a magnetized plasma that puts in game the study of a magneto-optic phenomenon of magnetic rotational polarization results of the interaction of the electromagnetic field with the considered medium that is not other that magneto-optic rotation or the rotation of Faraday [1]. This effect is used extensively to solve different problems notably by the techniques laser. Among these most important applications, the magneto-optic isolator. The problem is solved according to a main method of resolution founded on the calculation of the eigenvalues and the eigenvectors, while using the model of the electron elastically bound from Maxwell equations.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"3 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":"127543392","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
Active and passive modulation methods for management of passive mode-locked fiber lasers 无源锁模光纤激光器管理的有源和无源调制方法
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773054
A. Komarov, K. Komarov, A. Haboucha, F. Sanchez
{"title":"Active and passive modulation methods for management of passive mode-locked fiber lasers","authors":"A. Komarov, K. Komarov, A. Haboucha, F. Sanchez","doi":"10.1109/ICTONMW.2008.4773054","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773054","url":null,"abstract":"On basis of numerical simulation we have studied the characteristic generation instability arising from inertial modulation of gain-losses and refractive index of an intracavity laser medium. Such modulation is used as a method for management of interaction of ultrashort pulses in the laser resonator. The modulation due to an electro-optical feedback loop is considered also. In the case of such modulation the analyzed instability can be suppressed.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"46 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":"127063420","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
Spectrum slicing for low cost wavelength division multiplexing 低成本波分复用的频谱切片
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773127
M. Leeson, S. Sun
{"title":"Spectrum slicing for low cost wavelength division multiplexing","authors":"M. Leeson, S. Sun","doi":"10.1109/ICTONMW.2008.4773127","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773127","url":null,"abstract":"The key features of spectrum slicing are discussed in the context of the provision of low cost customer access as an alternative to laser systems. The history of the method is presented followed by an outline of performance analysis techniques. Following from this, system results are introduced from on-off keying leading to promising outcomes from the use of more sophisticated coding and modulation methods. There is also discussion of the use of shared optical preamplifiers that can deliver increased throughput and sensitivity benefits of almost 11 dB.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"38 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":"125875368","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
Electrochemistry of functionalized azo azulenes 功能化偶氮偶氮烯的电化学研究
2008 2nd ICTON Mediterranean Winter Pub Date : 2008-12-01 DOI: 10.1109/ICTONMW.2008.4773097
E. Ungureanu, D. I. Caval, G. Buica, E. Diacu, D. Giol, C. Amarandei, A. Razus, L. Bîrzan
{"title":"Electrochemistry of functionalized azo azulenes","authors":"E. Ungureanu, D. I. Caval, G. Buica, E. Diacu, D. Giol, C. Amarandei, A. Razus, L. Bîrzan","doi":"10.1109/ICTONMW.2008.4773097","DOIUrl":"https://doi.org/10.1109/ICTONMW.2008.4773097","url":null,"abstract":"The electrochemical study of certain azulene bis azo derivatives meta or para substituted is connected to the potential applications (enhanced NLO coefficients [1] and electrochromic behaviour) of this type of compounds. New compounds were studied by cyclic (CV) and differential pulse voltammetry (DPV), in TBABF4 0.1 M, CH3CN or CH3CHCl2 in order to find some rules regarding the influence of substituents position versus azo groups on the redox behaviour of azulene and azo groups. These electrochemical methods allowed establishing the oxidation and reduction processes characteristic for this type of compounds. Comparisons with common azo derivatives lead to conclusions regarding the enhanced azulene electro-reactivity in respect with aromatic structures [2]. The presence of two azo groups, especially when are para orientated, increases the polarization of the molecule, fact that facilitates the electrochemical generation of radical-ions. The presence of the alkyl substituents modifies both the electron density and the planarity of the azulene moiety toward the rest of the molecule. The modification of the glassy carbon electrodes with the polyazulene films was tested in view of obtaining new electrode materials [3]. The modulation of the structure parameters lead to important changes in the polymerization process being connected to the redox potentials and concentration in the synthesis solution. The formation of substituted poly-azo-azulene films was accomplished through electrochemical oxidation by scanning or controlled potential electrolysis. Conductive or isolating films have been obtained on glassy carbon, using CH3CN or CH3CHCl2 as solvents and 0.1 M TBAP or TBABF4 as supporting electrolytes [2], starting from differently substituted bis azo azulenes.","PeriodicalId":298995,"journal":{"name":"2008 2nd ICTON Mediterranean Winter","volume":"200 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":"124477393","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
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