简介：Anovelbroadbandtransmissionmethodtodeterminepolymerfilmthicknessduringmanufacturingisproposed,andameasurementsystemisdevelopedbasedonthismethod.TherelationshipbetweenbroadbandopticalpowerandfilmthicknessisdeducedaccordingtotheLambert-Beerlaw.Thesystemiscomposedofahalogenlightandanopticalpowermeter.Resultsshowthatthemeasurementerrorofthismethodisapproximately1μm,andtheresolutionofthesystemisbelow0.4μmforpolymerfilmswithlessthan100-μmthickness.

简介：Theinterferenceofopticallyinducedelectricandmagneticresonancesinhigh-refractive-indexdielectricnanoparticlesprovidesanewapproachtocontrolandshapethescatteringpatternsoflightinthefieldofnanophotonics.InthisLetter,wespectrallytunetheelectricandmagneticresonancesbyvaryingthegeometryofasingleisolatedleadtelluride(PbTe)dielectricnanocube.Then,weoverlaptheelectricdipoleresonanceandmagneticdipoleresonancetosuppressbackwardscatteringandenhanceforwardscatteringintheresonanceregion.Furthermore,abroadbandunidirectionalscatteringisachievedbystructuringthedielectricnanocuboidsasatrimerantenna.

简介：Anultra-broadbandandfabrication-tolerantsiliconpolarizationrotatorsplitterisproposedinthisLetter.Benefittingfromthebroadbandandlow-losscharacteristicsofthebi-leveltaperandcounter-taperedcoupler,thedesigneddevicehasasimulatedinsertionlossandcrosstalkoflessthan0.2and-15dBinthewavebandfrom1290to1610nm.Thesecharacteristicsmakeitvaluableinapplicationswithlargebandwidthrequirements,suchasfull-gridCoarsewavelengthdivisionmultiplexer(CWDM)anddiplexer/triplexerfiber-to-the-homesystems.Thefabricationtoleranceofthedesignisalsoanalyzed,showingthatthedeviceperformanceisquitestablewithnormalmanufacturingerrorsinsiliconphotonicsfoundries.

简介：Er~(3+)-dopedphosphor-telluriteglassforbroadbandshort-lengthEr~(3+)-dopedfiberamplifier(EDFA)isfabricatedandcharacterized.Thedifferentialvalue(△T)ofonsetcrystallinetemperature(T_x)andglasstransitiontemperature(T_g)is206°C.ThestimulatedemissioncrosssectionofEr~(a+)iscalculatedfromab-sorptionspectrumbyMcCumbertheoryandis0.87×10~(-20)cm~2at1532nm.Abroad1.5-μmfluorescencespectrumwith54-nmfull-widthathalfmaximum(FWHM)isdemonstrated.Especially,themaximumphononenergyofundopedphosphor-telluriteglassis1100cm~(-1),whichrestrictstheupconversionlumines-cence.Itispossibletopumpefficientlyat980nm.TheseresultsindicateEr~(3+)-dopedphosphor-telluriteglassissuitableforfabricatingbroadbandshort-lengthEDFA.