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RESEARCH PRODUCT
Continuous Broadband MWP True-Time Delay with PbS-PMMA and -SU8 waveguides
Isaac SuárezAmelia Lavinia RicchiutiSalvador SalesJavier HervasJuan P. Martínez-pastorJoaquín Pérezsubject
Materials scienceOptical fiber02 engineering and technologyOptical signal processingIntegrated microwave photonics7. Clean energySignalOptical waveguide componentsÒptica quànticalaw.inventionNanocompositesOptical pumping020210 optoelectronics & photonicsOpticslawDispersion (optics)TEORIA DE LA SEÑAL Y COMUNICACIONES0202 electrical engineering electronic engineering information engineeringColloidal quantum dots (QDs)Electrical and Electronic EngineeringNanotecnologiabusiness.industryTrue time delayAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsOptical delay linesSemiconductorsOptoelectronicsPhotonicsbusinessWaveguideMicrowavedescription
[EN] A new microwave true-time delay (TTD) photonic unit based on the dispersion of PbS colloidal quantum dots (QDs) in a Polymethyl methacrylate (PMMA) and the SU8 photoresist is presented. With this aim, the PbS-PMMA and PbS-SU8 nanocomposites are integrated on a silicon platform in the form of a planar and ridge waveguides, respectively. When PbS QDs on those structures are pumped below their band-gap, a phase shift and a temporal delay in an optically conveyed (at 1550 nm) microwave signal is performed. The results of these devices show potential benefits over current TTD technologies, since the proposed photonic waveguide structures allows real-time adjustment of the temporal delay by tuning the power of the pumping signal, more than 3.5 ps over 25 GHz, and a high level of integration due to the novel proposed photonic waveguide structures and the materials used.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-08-01 |