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医疗保健器具 2007年第11期14卷 48-51页

作者： Denis g.pelli Bart Farell Deborah C. Mooret 牛倩（译）不详广东省医疗器械研究所

我们是通过局部还是整体感知物体的呢？整体感知是有效力的，然而，人类是通过局部感知鉴别一个光暗相间的条纹光栅的。因此，当条纹数目增加时，感知效率会反比例下降，正如在各个特征检测器试验中总结出的可能解释那样。

关键词：文字识别感知反比例检测器条纹

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口服小剂量大麻延缓小鼠动脉粥样硬化进展

中国动脉硬化杂志 2005年第5期13卷 578-578页

作者： Steffens S Veillard NR Arnaud C pelli g Burger F Staub C 丁莉童中艺

Reproducibility of splicer-based long-period fiber gratings for gain equalization

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Optoelectronics Letters 2007年第3期3卷 203-206页

作者： I. Cacciari M. Brenci R. Falciai g. Nunzi Conti S. pelli g. C. Righini CNR-Institute of Applied Physics "Nello Carrara" Via Madonna del Piano 1050019 Sesto FiorentinoFirenzeItaly Centro Fermi Compendio Viminale 00184 RomaItaly CNR -Materials and Devices Department P.le Aldo Moro 700185 RomaItaly

We fabricated long-period fiber gratings （LPFgs） using electric arc discharges. We observed that the fiber becomes slightly tapered due to longitudinal tension during the arc： this effect depends on the arc current and time length. We experimentally investigated how these characteristics can influence grating＇s performances, especially in view of employing the LPFg as gain equalizer for an erbium-doped optical amplifier. As expected, we found that the spectral response of the grating depends on the period A, the intensity of the perturbation, the grating length and the type of mode-coupling induced. Since this last parameter cannot be estimated directly from the transmission spectra, we propose a method to determine the modecoupling occurring in the device and to assess the index modulation induced by the electric arcs. This method combines both experimental and simulated data, and can be used to characterize LPFgs made-up by any method.

关键词：长周期光纤光栅光纤接头增益均衡再现性电弧放电

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纽约世界金融中心,美国

世界建筑 1990年第4期 51-53页

作者： Ceasar pelli & Associates 佩利事务所

在世界贸易中心双塔的近旁,又兴建了一个规模相当庞大的建筑群——世界金融中心。它由四幢塔楼和它们的连接体组成,塔楼高度各不泪同,从33层至50层。建筑用地14英亩。总建筑面积700万平方英尺,其中包括10万平方英尺的零

关键词：金融中心世界贸易中心纽约美国

Diagnostic techniques for photonic materials based on Raman and Brillouin spectroscopies

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Optoelectronics Letters 2007年第3期3卷 188-191页

作者： M. Mattarelli S.Caponi A. Chiappini M. Montagna E. Moser F. Rossi C.Tosello C. Armellini A. Chiasera M. Ferrari Y. Jestin g. Nunzi Conti S. pelli g.C. Righini Dipartimento di Fisica Università di Trento CSMFO groupTrentoItaly INFM CRS-SOFT c/o Universita' di Roma "La Sapienza"I-00185RomaItaly CNR-IFN Istituto di Fotonica e NanotecnologieCSMFO groupTrentoItaly. Photonic Materials and Devices Laboratory IFAC-CNRSesto FiorentinoItaly. CNR Department of Materials and DevicesRomaItaly.

The elastic and vibrational properties of a material, bulk or planar waveguide, are studied by BriUouin and Raman spectroscopy to follow the process of nanocrystals growth in glass-ceramics. The nanoparticles cause the appearance, in the low frequency Raman spectrum, of characteristic peaks, whose position depends on the size of the crystals. At the same time, sharp crystal peaks, due to optical phonons, appear in the Raman spectra, allowing the determination of the nucleated phase, and a frequency shift of the BriUouin peaks is observed.

关键词：拉曼光谱布里渊光谱光子材料诊断技术

Er^(3+)-activated silica inverse opals synthesized by the solgel method

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Optoelectronics Letters 2007年第3期3卷 184-187页

作者： A. Chiappini C.Armellini A. Chiasera Y. Jestin M. Ferrari M. Mattarelli M. Montagna E. Moser C. Tosello L. Zampedri g. Nunzi Conti S. pelli R. M. Almeida g. C. Righini Dipartimento di Fisica Università di Trento CSMFO groupVia Sommarie 14 38050 TrentoItaly CNR-IFN Istituto di Fotonica e NanotecnologieCSMFO groupTrentoItaly Photonic Materials and Devices Laboratory IFAC-CNR50019 Sesto FiorentinoItaly Departamento de Engenharia de Materiais/ICEMS Instituto Superior Técnico Av. Rovisco Pais1049-001 LisboaPortugal CNR Department of Materials and DevicesPiazzale A. Moro 700185 RomaItalyand CNR-IFAC50019 Sesto FiorentinoItaly

We present the details of the sol-gel processing used to realize inverse silica opal,where the silica was activated with 0.3 mol% of Er3+ ions. The template(direct opal) was obtained assembling polystyrene spheres of the dimensions of 260 nm by means of a vertical deposition technique. The Er3+-activated silica inverse opal was obtained infiltrating,into the void of the template,the silica sol doped with Er3+ ions and subsequently removing the polystyrene spheres by means of calcinations. Scanning electron microscope showed that the inverse opals possess a fcc structure with a air hollows of about 210 nm and a photonic band gap,in the visible range,was observed from reflectance measurements. Spectroscopic properties of Er3+-activated silica inverse opal were investigated by luminescence spectroscopy,where,upon excitation at 514.5 nm,an emission of 4I13/2 → 4I15/2 of Er3+ ions transition with a 21 nm bandwidth was observed. Moreover the 4I13/2 level decay curve presents a single-exponential profile,with a measured lifetime of 18 ms,corresponding a high quantum efficiency of the system.

关键词：铒掺杂活性硅反opal结构溶胶-凝胶法合成

液相外延CdHgTe／CdZnTe／CdZnTe结构的生长和特性描述

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红外 1989年第12期10卷 17-22页

作者： pelli.,B 高国龙

Effect of Yb^(3+) concentration on Er^(3+) luminescence properties of sol-gelderived silica-alumina xerogels

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Optoelectronics Letters 2006年第5期2卷 354-357页

作者： K.Tran Ngoc H.Pham Thanh C.Nguyen Duc C.Armellini A.Chiasera M.Ferrari Y.Jestin M.Montagna E.Moser S.pelli g.C.Righini CNR-IFN Istituto di Fotonica e Nanotecnologie CSMFO groupvia Sommarie 14I-38050 PovoTrentoItaly ITIMS-Hanoi University of Technology No 1Dai Co VietHanoiVietnam Dipartimento di Fisica Università di TrentoCSMFO groupvia Sommarive 14I-38050 PovoTrentoItaly CNR-IFAC Nello Carrara Institute of Applied Physics Lab.of Optoelectronic TechnologiesVia Madonna del Piano 1050019 Sesto FiorentinoFirenzeItaly

Er^3- / Yb^3＋ co - doped silica - alumina monolithic xerogels were prepared with the same concentration on 2 000 Er/Si ppm and 6 000 AI/Si ppm. The Yb/Si content was varied from 0 to 4 000 ppm. Densification of the samples was achieved by thermal treatment in air at 950 ~C for 120 hours with a heating rate 0.1 ~C / min. Photoluminescence spectroscopy was used to obtain information about the effective excitation efficiency of Er^3＋ ions by co-doping with Yb^3- ions. The infrared-to-visible up-conversion luminescence has been investigated upon continuous wave excitation at 980 nm. The samples exhibit red, green and blue upconversion emission. It is found that the intensity of up-conversion luminescence increases with increasing Yb3- doping concentration. An opposite behavior is observed for the 4 I13/2 luminescence of the Er^3＋ ions.

关键词：铒离子二氧化硅干凝胶光致发光

Optical and spectroscopic properties of a new erbium-doped soda-lime-alumino-silicate glass for integrated optical amplifiers

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Optical and spectroscopic properties of a new erbium-doped s...

20th Congress of the International Commission for Optics

作者： S.Berneschi M.Bettinelli M.Brenci R.Calzolai A.Chiasera M.Ferrari M.Matterelli M.Montagna g.Nunzi Conti S.pelli S.Sebastiani S.Siligardi A.Speghini g.C.Righini Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Electronics Computer Science and Systems Department （DEIS） University of Bologna 40100 Bologna Italy Scientific and Technologic Department University of Verona 37134 Verona Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Institute of Photonics and Nanotechnology （IFN CNR） Trento Section 38050 Povo Italy Institute of Photonics and Nanotechnology （IFN CNR） Trento Section 38050 Povo Italy Physics Department University of Trento 38050 Povo （Trento） Italy Institute of Photonics and Nanotechnology （IFN CNR） Trento Section 38050 Povo Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy Material Engineering Department （DIMA） University of Modena-Reggio Emilia 41100 Modena Italy Scientific and Technologic Department University of Verona 37134 Verona Italy Optoelectronics ＆ Photonics Dept. "Nello Carrara" Institute of Applied Physics （IFAC CNR） 50127 Firenze Italy

Silicate glasses are among the best hosts for rare-earth ions, especially for the development of integrated optic amplifiers and lasers, due to their chemical robustness and adaptability to different

关键词： Alumino-Silicate glasses Ion-Exchange Erbium Optical Amplifier Integrated Optics

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明尼阿波利斯西北中心大厦,美国

世界建筑 1989年第5期 38-39页

作者：西塞·佩里事务所

关键词：明尼阿波利斯飞封日喻门目