Publications de Banafsheh Abasahl

Fabrication of plasmonic structures with well-controlled nanometric features: a comparison between lift-off and ion beam etching

Olivier Martin, Christian Santschi, Banafsheh Abasahl

After providing a detailed overview of nanofabrication techniques for plasmonics, we discuss in detail two different approaches for the fabrication of metallic nanostructures based on e-beam lithography. The first approach relies on a negative e-beam resis ...

IOP PUBLISHING LTD2021

MORPHIC: Programmable photonic circuits enabled by silicon photonic MEMS

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Banafsheh Abasahl

In the European project MORPHIC we develop a platform for programmable silicon photonic circuits enabled by waveguide-integrated micro-electro-mechanical systems (MEMS). MEMS can add compact, and low-power phase shifters and couplers to an established sili ...

SPIE-INT SOC OPTICAL ENGINEERING2020

Silicon Photonic MEMS: Exploiting Mechanics at the Nanoscale to Enhance Photonic Integrated Circuits

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Banafsheh Abasahl, Yu Zhang, Shiv Ashish Kumar

With the maturing and the increasing complexity of Silicon Photonics technology, novel avenues are pursued to reduce power consumption and to provide enhanced functionality: exploiting mechanical movement in advanced Silicon Photonic Integrated Circuits pr ...

IEEE2019

Surface-to-volume ratio controls the radiation of stratified plasmonic antennas

Olivier Martin, Christian Santschi, Banafsheh Abasahl

Surface plasmons are excited at a metal/dielectric interface, through the coupling between conduction electrons and incident photons. The surface plasmon generation is therefore strongly determined by the accessibility of the surface to the incoming electr ...

2017

Interaction of LSP resonances and Fabry-Perot cavity modes

Olivier Martin, Shourya Dutta Gupta, Banafsheh Abasahl

2015

Cavity-Coupled Plasmonic Device with Enhanced Sensitivity and Figure-of-Merit

Olivier Martin, Shourya Dutta Gupta, Banafsheh Abasahl, Mohsen Bahrami Panah

Using full-wafer processing, we demonstrate a sophisticated nanotechnology for the realization of an ultrahigh sensitive cavity-coupled plasmonic device that combines the advantages of Fabry-Perot microcavities with those of metallic nanostructures. Coupli ...

American Chemical Society2015

Design and Fabrication of Plasmonic Nanoantennas to Control Light at the Nanoscale

Banafsheh Abasahl

EPFL2014

Quantitative Extraction of Equivalent Lumped Circuit Elements for Complex Plasmonic Nanostructures

Olivier Martin, Christian Santschi, Banafsheh Abasahl

We establish a general method to bridge the gap between full-field electromagnetic calculations and equivalent lumped circuit elements to describe the optical response of plasmonic nanostnictures. The exact value of each lumped element is extracted from on ...

Amer Chemical Soc2014

Coupling Strength Can Control the Polarization Twist of a Plasmonic Antenna

Olivier Martin, Christian Santschi, Shourya Dutta Gupta, Banafsheh Abasahl

The far-field polarization of the optical response of a plasmonic antenna can be tuned by subtly engineering of its geometry. In this paper, we develop design rules for nano antennas which enable the generation of circular polarized light via the excitatio ...

American Chemical Society2013

Engineering absorption losses in plasmonic nanostructures

Olivier Martin, Theo Lasser, Krishnan Thyagarajan, Banafsheh Abasahl

2013