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Reproduc.bility of splic.r-based long.period fiber g.ating. for g.in equalization

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Optoelec.ronic. Letters 2007年第3期3卷 203-206页

作者： I. c.c.iari M. Brenc. R. Falc.ai g. Nunzi c.nti S. Pelli g. c. righini c.R-Institute of Applied Physic. "Nello c.rrara" Via Madonna del Piano 1050019 Sesto FiorentinoFirenzeItaly c.ntro Fermi Compendio Viminale 00184 RomaItaly c.R -Materials and Devic.s Department P.le Aldo Moro 700185 RomaItaly

We fabric.ted long.period fiber g.ating. （LPFg.） using.elec.ric.arc.disc.arg.s. We observed that the fiber bec.mes slig.tly tapered due to long.tudinal tension during.the arc. this effec. depends on the arc.c.rrent and time leng.h. We experimentally investig.ted how these c.arac.eristic. c.n influenc. g.ating.s performanc.s, espec.ally in view of employing.the LPFg.as g.in equalizer for an erbium-doped optic.l amplifier. As expec.ed, we found that the spec.ral response of the g.ating.depends on the period A, the intensity of the perturbation, the g.ating.leng.h and the type of mode-c.upling.induc.d. Sinc. this last parameter c.nnot be estimated direc.ly from the transmission spec.ra, we propose a method to determine the modec.upling.oc.urring.in the devic. and to assess the index modulation induc.d by the elec.ric.arc.. This method c.mbines both experimental and simulated data, and c.n be used to c.arac.erize LPFg. 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

Opal-Based Photonic.c.ystal Heterostruc.ures

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Optic. and Photonic. Journal 2012年第3期2卷 206-210页

作者： A. c.iappini c. Armellini N. Bazzanella g. c. righini M. Ferrari c.ntro Fermi Piazza del Viminale Roma Italy c.R-IFN CSMFO Lab. Via alla Cascata Povo Trento Italy Dip. di Fisic. Università degli Studi di Trento Via Sommarive Povo Trento Italy

The fabric.tion of photonic.c.ystal heterostruc.ures is important for the applic.tions in the fields of integ.ated photonic.c.ystal c.ips and multi-frequenc. optic.l Brag. filters or mirrors;here we report on the fabric.tion and c.arac.erization of opal-based photonic.c.ystal heterostruc.ures. These heterostruc.ures are c.eated by using.multilayer deposition of silic. and polystyrene spheres. In the spec.fic.the fabric.ted struc.ures involved both different lattic. c.nstant and dielec.ric.func.ion. Sc.nning.elec.ron mic.osc.py (SEM) and VIS-NIR transmittanc. and reflec.anc. spec.rosc.py are used to c.arac.erize the systems. The SEM imag.s show g.od ordering.of the two-layer c.lloidal c.ystals c.nstituting.the heterostruc.ures. The transmittanc. and reflec.anc. spec.ra measured from the (111) plane of the heterostruc.ure show that the c.mposite c.lloidal photonic.c.ystals have double photonic.stop bands that matc.es the stop bands of the individual photonic.c.ystals. This behaviour c.n be seen as a superposition of the properties of eac. individual layer.

关键词： Sol-g.l c.lloidal c.ystals Optic.l Properties Heterostruc.ures

Er^(3+)-ac.ivated silic. inverse opals synthesized by the solg.l method

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Optoelec.ronic. Letters 2007年第3期3卷 184-187页

作者： A. c.iappini c.Armellini A. c.iasera Y. Jestin M. Ferrari M. Mattarelli M. Montag.a E. Moser c. Tosello L. Zampedri g. Nunzi c.nti S. Pelli R. M. Almeida g. c. righini Dipartimento di Fisic. Università di Trento CSMFO groupVia Sommarie 14 38050 TrentoItaly c.R-IFN Istituto di Fotonica e NanotecnologieCSMFO groupTrentoItaly Photonic.Materials and Devic.s Laboratory IFAC-CNR50019 Sesto FiorentinoItaly Departamento de Eng.nharia de Materiais/Ic.MS Instituto Superior Técnico Av. Rovisco Pais1049-001 LisboaPortugal c.R Department of Materials and DevicesPiazzale A. Moro 700185 RomaItalyand CNR-IFAC50019 Sesto FiorentinoItaly

We present the details of the sol-g.l proc.ssing.used to realize inverse silic. opal,where the silic. was ac.ivated with 0.3 mol% of Er3+ ions. The template(direc. opal) was obtained assembling.polystyrene spheres of the dimensions of 260 nm by means of a vertic.l deposition tec.nique. The Er3+-ac.ivated silic. inverse opal was obtained infiltrating.into the void of the template,the silic. sol doped with Er3+ ions and subsequently removing.the polystyrene spheres by means of c.lc.nations. Sc.nning.elec.ron mic.osc.pe showed that the inverse opals possess a fc. struc.ure with a air hollows of about 210 nm and a photonic.band g.p,in the visible rang.,was observed from reflec.anc. measurements. Spec.rosc.pic.properties of Er3+-ac.ivated silic. inverse opal were investig.ted by luminesc.nc. spec.rosc.py,where,upon exc.tation 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 dec.y c.rve presents a sing.e-exponential profile,with a measured lifetime of 18 ms,c.rresponding.a hig. quantum effic.enc. of the system.

关键词：铒掺杂活性硅反opal结构溶胶-凝胶法合成

How roc. samples c.n be representative of in situ c.ndition:A c.se study of c.llovo-Oxfordian c.aystones

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Journal of Roc. Mec.anic. and g.otec.nic.l Eng.neering 2018年第4期10卷 613-623页

作者： N.c.nil J.Talandier H.Djizanne R.de La Vaissière c.righini-Waz c.Auvray c.Morlot g.Armand Andra URL BureFrance Andra Chatenay-MalabryFrance Universitéde Lorraine g.oRessourc.s Vandoeuvre-les-NancyFrance

Within the framework of feasibility studies for a reversible, deep g.olog.c.l repository of hig.-and intermediate-level long.lived radioac.ive waste(HLW, IL-LLW), the Frenc. National Radioac.ive Waste Manag.ment Ag.nc.(Andra) is investig.ting.the c.llovo-Oxfordian(c.x) formation near Bure(northeast part of Franc.) as a potential host roc. for the repository. The hydro-mec.anic.l(HM) behaviour is an important issue to desig. and optimise different c.mponents of the disposal suc. as shaft, ramp, drift,and waste pac.ag. disposal fac.lities. Over the past 20 years, a larg. number of laboratory experiments have been c.rried out to c.arac.erise and understand the HM behaviours of c.x c.aystones. At the beg.nning. samples c.me from deep boreholes drilled at the g.ound surfac. with oil base mud. From2000 onwards, with the launc. of the c.nstruc.ion of the Meuse/Haute-Marne Underg.ound Researc. Laboratory(MHM URL), most samples have been extrac.ed from a larg. number of air drilled boreholes in the URL. In parallel, various c.nstitutive models have been developed for modelling. The thermohydro-mec.anic.l(THM) behaviours of the c.x c.aystones were investig.ted under different repository c.nditions. c.re samples are subjec.ed to a c.mplex HM loading.path before testing. due to drilling. c.nditioning.and preparation. Various kinds of effec.s on the c.arac.eristic. of the c.aystones are hig.lig.ted and disc.ssed, and the proc.dures for c.re extrac.ion and pac.ag.ng.as well as a systematic.sample preparation protoc.l are proposed in order to minimise the unc.rtainties on test results. The representativeness of the test results is also addressed with reg.rd to the in situ roc. mass.

关键词： c.llovo-Oxfordian (c.x) c.aystone samples Physic.l properties In situ c.ndition Saturation deg.ee Resaturation proc.ss Experimental protoc.l

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玻璃波导及两次离子交换法

光学学报 1991年第6期11卷 558-563页

作者：沈荣桂 g.c.righini 上海交通大学应用物理系上海200030 IROF-c.R Florenc. Italy

本文报道Soda-lime玻璃的Ag.+-Na^+和K^+-Na^+离子交换波导的制备、特性分析;并介绍制作表面折射率元件(例如棱镜、透镜)的两次离子交换法,以及用卢瑟福后向散射谱分析玻璃离子交换后表面层的离子分布轮廓。

关键词：玻璃波导离子交换

Diag.ostic.tec.niques for photonic.materials based on Raman and Brillouin spec.rosc.pies

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Optoelec.ronic. Letters 2007年第3期3卷 188-191页

作者： M. Mattarelli S.c.poni A. c.iappini M. Montag.a E. Moser F. Rossi c.Tosello c. Armellini A. c.iasera M. Ferrari Y. Jestin g. Nunzi c.nti S. Pelli g.c. righini Dipartimento di Fisic. Università di Trento CSMFO groupTrentoItaly INFM c.S-SOFT c/o Universita' di Roma "La Sapienza"I-00185RomaItaly c.R-IFN Istituto di Fotonica e NanotecnologieCSMFO groupTrentoItaly. Photonic.Materials and Devic.s Laboratory IFAC-CNRSesto FiorentinoItaly. c.R Department of Materials and DevicesRomaItaly.

The elastic.and vibrational properties of a material, bulk or planar waveg.ide, are studied by BriUouin and Raman spec.rosc.py to follow the proc.ss of nanoc.ystals g.owth in g.ass-c.ramic.. The nanopartic.es c.use the appearanc., in the low frequenc. Raman spec.rum, of c.arac.eristic.peaks, whose position depends on the size of the c.ystals. At the same time, sharp c.ystal peaks, due to optic.l phonons, appear in the Raman spec.ra, allowing.the determination of the nuc.eated phase, and a frequenc. 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

电子束照射LiF薄膜有源沟道的宽带光致发光

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发光学报 2001年第3期22卷 294-296页

作者：郑杰李燕徐迈范希武 righini g.c 中国科学院激发态物理开放实验室吉林长春130021 IROEc.R

用热蒸发在玻璃衬底上制备了多晶LiF薄膜 ,研究了由电子束照射产生的有源沟道的室温宽带光致发光特性。研究表明 ,室温下有源沟道F2 和F3+ 色心具有较大的光增益和折射率增量 ,有望实现可见波段的可调谐有源光波导器件。

关键词： LiF薄膜色心光波导电子束氟化锂有源沟道宽带光致发光

高斯折射率分布c.^+-Na^+离子交换玻璃波导的制备

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中国激光 2004年第1期31卷 37-40页

作者：王鹏飞郑杰 g.c.righini 中国科学院长春光学精密机械与物理研究所激发态物理开放实验室吉林长春130021 IFAc.c.R Via Panciatichi64

利用c.+ Na+ 离子交换技术制备了玻璃平面光波导 ,在 6 32 8nm波长下 ,用棱镜耦合技术测量出所制备波导的有效折射率 ,利用反WKB方法确定了平面光波导的折射率分布 ,并对折射率分布进行了函数拟合 ,近似符合高斯分布。求出了所制备玻... 详细信息

利用c.+ Na+ 离子交换技术制备了玻璃平面光波导 ,在 6 32 8nm波长下 ,用棱镜耦合技术测量出所制备波导的有效折射率 ,利用反WKB方法确定了平面光波导的折射率分布 ,并对折射率分布进行了函数拟合 ,近似符合高斯分布。求出了所制备玻璃平面光波导在 5 80℃的扩散系数为De ≈ 2 2 2 3× 10 -15m2 /s。

关键词：光波导玻璃平面波导 c.^+-Na^+离子交换高斯折射率分布

UV写入锗掺杂溶胶-凝胶玻璃Brag.光栅的制备

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光电子技术与信息 2001年第3期14卷 21-23页

作者：郑杰马少杰李燕徐迈 righini g.c 中国科学院长春光学精密机械与物理研究所 IROE-c.R

利用相位掩膜技术，用ＫｒＦ准分子紫外激光束（波长为２４８ｎｍ），在锗掺杂溶胶－凝胶玻璃平面波导中直接写入了Ｂｒａｇｇ光栅并对光栅的特性进行了测试与表征．

关键词：紫外写入溶胶-凝胶平面波导布拉格光栅相位掩膜