简介：Thepropagationpropertiesofthebreatherinbirefringentfibersareinvestigated.Thebreathercanpropagatestablyinstronglybirefringentfibers.Thepropagationlawcanbeexpected.However,randombirefringencemakesthepropagationofthebreathermorecomplex.Thebreatherwillpartlydisappearandpartlyappear,evenmaysplitintotwosmallerbreathers.Inaddition,thevaryingrangeofrelativetimedisplacementbetweentwocomponentsofthebreatherbecomesnarrowerwiththeeffectofthird-orderdispersion.Ifthird-orderdispersionistoostrong,thebreatherbehaviorwilldisappeargraduallyduringthetransmission.Thebreathercanexistinrandombirefringentfiberwithdispersionmanagementratherthaninstronglybirefringentfiber.

简介：Activatedcarbonfiberisonekindofimportantadsorptionmaterials.Thesenovelfibrousadsorbentshavehighspecificsurfaceareasorabundantfunctionalgroups,whichmakethemhavegreateradsorption/desorptionratesandlargeradsorptioncapacitiesthanotheradsorbents.Theycanbepreparedasbundle,paper,clothandfelttomeetvarioustechnicalrequirement.Theyalsoshowreductionproperty.Inthispaperthelatestprogressonthestudiesofthepreparationandadsorptionpropertiesofactivatedcarbonfibersisreviewed.Theapplicationofthesematerialsindrinkingwaterpurification,environmentalcontrol,resourcerecovery,chemicalindustry,andinmedicineandhealthcareisalsopresented.

简介：一步舞预告的处理，阳极化，被用来激活基于的polyacrylonitrile(平底锅)碳纤维而不是平淡的二拍子的圆舞预告的处理，有SnCl2的促进感受性和有PdCl2的激活。基于平底锅的碳纤维的graphitization上的阳极化预告的处理的效果作为功能被调查捏催化剂。基于平底锅的碳纤维在导致活跃地点的形成的H3PO4电解质被阳极化，它从而便于下列无电捏涂层。碳纤维当面并且缺席捏涂层热被对待，结构的变化被X光检查衍射和拉曼光谱学描绘，哪个显示基于平底锅的碳纤维的graphitization被阳极化处理和催化剂加速捏。用阳极化的碳纤维，平淡的二拍子的圆舞预告的处理，促进感受性和激活，不被需要。

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简介：Inthispaper,fibrouschelatingexchangerswith-N(CH2COOH)2grouphavebeenpreparedforthefirsttimebyaweaklybasicanionexchangefiber(aminatedfiber)asthestartingmaterials.ThefiberswerequiteeffectivefortheadsorptionofheavymetalionsuchasCu^2+.Inaddition,IRspectrumofthestructureoffibersconfirmsthatitisfeasibletoprepareiminocarboxylicchelatingfiberthroughdirectcarboxylationreaction.

简介：Theadsorptionbehaviorofdyesonavarietyofsisalbasedactivatedcarbonfibers(SACF)hasbeenstudiedinthispaper.TheresultsshowthatthiskindofACFhasexcellentadsorptioncapacitiesforsomeorganic(dye)molecules.SACFcanremovenearlyallmethyleneblue,crystalviolet,bromophenolblueandEriochromeblueblackRfromwaterafterstaticadsorptionfor24h.at30℃.Theadsorptionamountscanreachmorethan400mg/gwhenadding50mgSACFinto50mldyesolution.Underthesameconditions,theadsorptionamountsofxylenolorangefluoresceinandEriochromeblackTwreelower.Ontheotherhand,theadsorptionamountschangealongwiththecharacteristicsofadsorbents.TheSACFsactivatedabove840℃,whichhavehigherspecificsurfaceareasandwiderporeradii,havehigheradsorptionamountsforthedyes.TheresearchingresultsalsoshowthattheadsorptionratesofdyesontoSACFsdecreasebytheorderofmethyleneblue,EriochromeblueblackRandcrystalviolet.

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简介：有在短波长区域的异常分散的Photonic水晶纤维(PCF)为一些应用是重要的，例如短波长soliton繁殖，超级连续统产生和放射激光的短脉搏纤维。在这份报纸，为与要求的异常分散区域设计PCF的一个系统的方法被使用一个有限差别解答者和PCF的波导分散的可伸缩的转变建议。设计PCF能在这个区域是反常地散的不到1.3渭m，它是很困难的在传统的标准单个模式的纤维认识到。建议方法的有效性被数字结果同意。CLC数字TN253-TQ342+.82文件代码A这个工作被中国(号码60407011和号码60277018)和浙江的国家自然科学基础支持中国的省的自然科学基础(没有。Y104073）

简介：Thecavitatedbifurcationprobleminasolidspherecomposedoftwocompressiblehyper-elas-ticmaterialsisexamined.Thebifurcationsolutionforthecomposedsphereunderauniformradialtensileboundarydead-loadisobtained.Thebifurcationcurvesandthestresscontributionssubsequenttothecavita-tionaregiven.Therightandleftbifurcationaswellasthecatastropheandconcentrationofstressesareana-lyzed.Thestabilityofsolutionsisdiscussedthroughanenergycomparison.

简介：把光纤维(PMOF)和选择液体水晶注射技术基于聚合物microstructured，新奇温度控制悦耳的衰减器在这篇论文理论上被设计。在我们的实验，有高效的光纤维成功地被拉的PMMAmicrostructured和进microholes的液体水晶5CB的选择注射被认识到。悦耳的衰减器与扑灭比率被制作在60dB上，它与设计同意很好。CLC数字TN715这个工作被国家基本研究程序支持中国(973程序)(2003CB314907)，为信息科技(TNList)的清华国家实验室，和国家天赋中国的科学基础。

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简介：Anewpyrometer,whichcansolvetheaffectionofemissivitychangeintemperaturemeasuring,hasbeendevelopedbydoubleY-typeopticalfibers.Themathematicalmodelofthenewpyrometerispresentedandtheerrorsofthenewpyrometerareanalyzed.

简介：Theeffectsofhighdrawingspeedsonparametersofholeyfibersarepresented.Aholeyfiberpreformstructurewasmadebyusingtube-in-tubemethodandwasdrawnathighspeedswithanaimofmassproductiontomeetthedemandofnextgenerationcommunicationsystems.Transmissionparameterssuchasnumericalapertureandnormalizedfrequencyofthefabricatedholeyfibershavebeenmeasuredandcomparedwiththeoreticalvaluesbasedoneffectiveindexmethod.Althoughthefabricatedholeyfiberswerenotofhighquality,theanalysesoftheparametershaveshownpromisingoutlookforfabricationofsuchfibers.

简介：A2-cmlongBragggratingwithreflectivityof～99.95%inB/Gecodopedopticalfiberwithouthydrogenloadingwascreatedbyphase-maskmethodwithapulsedKrFexcimerlaserat248nm.DCandACcomponentsofrefractiveindexchangewereanalyzedbymonitoringtransmissionspectrumevolutionduringthewritingprocessoffiberBragggrating.Therelationsoftheevolutionofcenterwavelengthandreflectivitywithnumberofpulseswererespectivelyinvestigated.

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简介：Thepulseamplificationinthedispersion-decreasingfiber(DDF)isinvestigatedviasymboliccomputationtosolvethevariable-coefficienthigher-ordernonlinearSchr(o|¨)dingerequationwiththeeffectsofthird-orderdispersion,self-steepening,andstimulatedRamanscattering.Theanalyticone-solitonsolutionofthismodelisobtainedwithasetofparametricconditions.Basedonthissolution,thefundamentalsolitonisshowntobeamplifiedintheDDF.ThecomparisonoftheamplitudeofpulsesfordifferentdispersionprofilesoftheDDFisalsoperformedthroughthegraphicalanalysis.Theresultsofthispaperwouldbeofcertainvaluetothestudyofsignalamplificationandpulsecompression.

简介：Anoverviewoftheprogressonpulse-preserving,coherent,nonlinearfiber-basedsupercontinuumgenerationispresented.Thecontextencompassesvariouswavelengthrangesandpumpsources,startingwithsilicaphotoniccrystalfiberspumpedwith1.0μmfemtosecondlasersuptochalcogenidestep-indexandmicrostructuredfiberspumpedfromopticalparametricamplifierstunedtomid-infraredwavelengths.Inparticular,silicaandsilicatebasedall-normaldispersion(ANDi)photoniccrystalfibershavebeendemonstratedforpumpingwithfemtosecondlasersoperatingat1.56μmwiththerecordedspectracovering0.9–2.3μm.Thismatchesamplificationbandsofrobustfiberamplifiersandfemtosecondlasers.Thereviewthereforefocusesspecificallyonthiswavelengthrange,discussingglassandnonlinearfiberdesigns,experimentalresultsonsupercontinuumgenerationuptothefundamentallimitofoxideglassfibertransmissionaround2.8μm,andvariouslimitationsofsupercontinuumbandwidthandcoherence.Specifically,theroleofnonlinearresponseagainsttheroleofdispersionprofileshapeisanalyzedfortwodifferentsoftglassANDifiberspumpedatmorethan2.0μm.Aspatio-temporalinteractionofthefundamentalfibermodewithmodespropagatinginthephotoniclatticeofthediscussedANDifibersisshowntohavepositiveeffectsonthecoherenceofthesupercontinuumatpumppulsedurationsof400fs.Finally,thedesignanddevelopmentofgraded-index,nanostructuredcoreopticalfibersarediscussed.Insuchstructuresthearbitraryshapingofthecorerefractiveindexprofilecouldsignificantlyimprovetheengineeringflexibilityofdispersionandeffectivemodeareacharacteristics,andwouldbeaninterestingplatformtofurtherstudytheintermodalinteractionmechanismsandtheirimpactonsupercontinuumcoherenceforsubpicosecondlaserpumpedsetups.

简介：Supercontinuum(SC)generationhasattractedasignificantscientificinterestinthepastdecadesduetoitspromisingapplicationscoveringthefieldsofmetrology,spectroscopy,defense,aswellasmedicaltreatments.Todate,researchersaredevotedtoimprovingthespectralwidthandflatnessofSCgenerationbyusingspecialtyopticalfibers.Theflatnessofthespectrumisofimportancebecauseitcanimprovetheaccuracyofmeasurementinpracticalapplications.ThispapersummarizesthetheoryofSC,thestateoftheartofflatSCgenerationusingopticalfiberincludingphotoniccrystalfibers,softglassfibersaswellasgermania-dopedfibers,andsuggeststhefutureresearchdirectionofflatSClightsource.