Mid Term Review

Integrated plasmonic metadevices on dielectric waveguides

Mr Rui Guo
PhD student, Nonlinear Physics Center

Integrated photonics has been a very hot topic in the last two decades, and it plays a very important role in telecommunications, integrated sensing devices, optical interconnectors just to name a few. Traditionally, integrated photonic crystals, Mach Zehnder waveguides interferometers, ring resonators, gratings are the key elements for integrated photonic circuits, however, they are bulky and there is a room to decrease further the functional areas to make more compact integrated photonic chips. Due to their ability to confine light to sub-wavelength volumes plasmonic nanoparticles and nanoantennas can serve as a fundamental link between electronic and photonic circuits as they can bridge large size mismatch between the electronic and optical wave function. Thus, plasmonic elements can be utilized to increase the integration density and performance of active and passive photonic devices as well as to include new functionalities and concepts for photonic chips. Therefore, our goal is to design subwavelength functional areas by utilizing plasmonic meta atoms to manipulate both farfield and localized light and integrate these plasmonic functional areas into dielectric optical waveguides. In this seminar, I will present my work on the integration of plasmonic elements with dielectric waveguides, such as the band spectrum splitting by using a single Fano nanoantenna, waveguide modes splitting, and directional coupling of the localized source (quantum dots, semiconductor emitters, fluorophores) to waveguides by using optical Yagi-Uda nanoantennas.

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