Search results for "Hollow core"

showing 3 items of 3 documents

Optical Amplification in Hollow-Core Negative-Curvature Fibers Doped with Perovskite CsPbBr3 Nanocrystals

2019

| openaire: EC/H2020/820423/EU//S2QUIP We report a hollow-core negative-curvature fiber (HC-NCF) optical signal amplifier fabricated by the filling of the air microchannels of the fiber with all-inorganic CsPbBr3 perovskite nanocrystals (PNCs). The optimum fabrication conditions were found to enhance the optical gain, up to +3 dB in the best device. Experimental results were approximately reproduced by a gain assisted mechanism based on the nonlinear optical properties of the PNCs, indicating that signal regeneration can be achieved under low pump powers, much below the threshold of stimulated emission. The results can pave the road of new functionalities of the HC-NCF with PNCs, such as op…

FabricationMaterials scienceperovskite nanocrystalsGeneral Chemical Engineeringnonlinear optical properties02 engineering and technology01 natural scienceslcsh:Chemistry010309 opticssignal regeneration/amplification0103 physical sciencesGeneral Materials ScienceStimulated emissionFiberPerovskite (structure)business.industryDopingÒpticahollow core fibers021001 nanoscience & nanotechnologyNonlinear systemlcsh:QD1-999NanocrystalOptoelectronicsMaterials nanoestructurats0210 nano-technologybusinessSignal regenerationNanomaterials
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Chalcogenide glass hollow core photonic crystal fibers

2010

International audience; We report the first hollow core photonic crystal fibers (HC PCF) in chalcogenide glass. To design the required HC PCF profiles for such high index glass, we use both band diagram analysis to define the required photonic bandgap and numerical simulations of finite size HC PCFs to compute the guiding losses. The material losses have also been taken into account to compute the overall losses of the HC PCF profiles. These fibers were fabricated by the stack and draw technique from Te20As30Se50 (TAS) glass. The fibers we drew in this work are composed of six rings of holes and regular microstructures. Two profiles are presented, one is known as a kagome lattice and the ot…

Microstructured optical fibersOptical fiberMaterials scienceChalcogenide glassPhysics::Optics02 engineering and technology01 natural scienceslaw.invention010309 opticsInorganic ChemistryOpticslawLattice (order)0103 physical sciencesBand diagramHexagonal latticeElectrical and Electronic EngineeringPhysical and Theoretical ChemistrySpectroscopyPhotonic crystalbusiness.industryPhotonic bandgapOrganic Chemistry[CHIM.MATE]Chemical Sciences/Material chemistry021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsPhotonic crystal fibersHollow coreFiber optic sensor[ CHIM.MATE ] Chemical Sciences/Material chemistryChalcogenide glassOptoelectronics0210 nano-technologybusinessInfraredPhotonic-crystal fiber
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Optical Amplification in Hollow-Core Negative-Curvature Fibers Doped with Perovskite CsPbBr

2019

We report a hollow-core negative-curvature fiber (HC-NCF) optical signal amplifier fabricated by the filling of the air microchannels of the fiber with all-inorganic CsPbBr3 perovskite nanocrystals (PNCs). The optimum fabrication conditions were found to enhance the optical gain, up to +3 dB in the best device. Experimental results were approximately reproduced by a gain assisted mechanism based on the nonlinear optical properties of the PNCs, indicating that signal regeneration can be achieved under low pump powers, much below the threshold of stimulated emission. The results can pave the road for new functionalities of the HC-NCF with PNCs, such as optical amplification, nonlinear frequen…

perovskite nanocrystalssignal regeneration/amplificationnonlinear optical propertieshollow core fibersArticleNanomaterials (Basel, Switzerland)
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