195 citations · 636 across the 12 of their papers we have counts for
14 papers
Training of Physical Neural Networks
Ali Momeni, Babak Rahmani, Benjamin Scellier +25
Physical neural networks (PNNs) are a class of neural-like networks that leverage the properties of physical systems to perform computation. While PNNs are so far a niche research…
Backpropagation-free Training of Deep Physical Neural Networks
Ali Momeni, Babak Rahmani, Matthieu Mallejac +2
Recent years have witnessed the outstanding success of deep learning in various fields such as vision and natural language processing. This success is largely indebted to the massi…
Roadmap on Wavefront Shaping and deep imaging in complex media
Sylvain Gigan, Ori Katz, Hilton B. de Aguiar +42
The last decade has seen the development of a wide set of tools, such as wavefront shaping, computational or fundamental methods, that allow to understand and control light propaga…
Variational framework for partially-measured physical system control: examples of vision neuroscience and optical random media
Babak Rahmani, Demetri Psaltis, Christophe Moser
To characterize a physical system to behave as desired, either its underlying governing rules must be known a priori or the system itself be accurately measured. The complexity of…
All-fiber spatiotemporally mode-locked laser with multimode fiber-based filtering
Uğur Teğin, Babak Rahmani, Eirini Kakkava +2
We demonstrate the first multimode fiber interference-based filtering in an all-fiber spatiotemporally mode-locked laser. The oscillator generates dissipative soliton pulses at 103…
Single mode output by controlling the spatiotemporal nonlinearities in mode-locked femtosecond multimode fiber lasers
Uğur Teğin, Babak Rahmani, Eirini Kakkava +2
The performance of fiber mode-locked lasers is limited due to the high nonlinearity induced by the spatial confinement of the single-mode fiber core. To massively increase the puls…
Wide-Band/Angle Blazed Dual Mode Metallic Groove Gratings
Omid Hemmatyar, Mohammad Ali Abbassi, Babak Rahmani +2
We introduce a new and simple approach to acquire wide-band/angle blazing operation in one-dimensional metallic gratings supported by equivalent circuit analysis. The gratings that…
Controlling spatiotemporal nonlinearities in multimode fibers with deep neural networks
Uğur Teğin, Babak Rahmani, Eirini Kakkava +3
Spatiotemporal nonlinear interactions in multimode fibers are of interest for beam shaping and frequency conversion by exploiting the nonlinear propagation of different pump regime…
Competing Neural Networks for Robust Control of Nonlinear Systems
Babak Rahmani, Damien Loterie, Eirini Kakkava +4
The output of physical systems is often accessible by measurements such as the 3D position of a robotic arm actuated by many actuators or the speckle patterns formed by shining the…
Spatiotemporal self-similar fiber laser
Uğur Teğin, Eirini Kakkava, Babak Rahmani +2
In this Letter, we demonstrate, to the best of our knowledge, the first spatiotemporally mode-locked fiber laser with self-similar pulse evolution. The multimode fiber oscillator g…
Multimode Optical Fiber Transmission with a Deep Learning Network
Babak Rahmani, Damien Loterie, Georgia Konstantinou +2
Multimode fibers (MMF) are an example of a highly scattering medium which scramble the coherent light propagating within them and produce seemingly random patterns. Thus, for appli…
Accurate Effective Medium Theory for the Analysis of Spoof Localized Surface Plasmons in Textured Metallic Cylinders
Babak Rahmani, Amirmasood Bagheri, Amin Khavasi
It has been recently demonstrated that textured closed surfaces which are made out of perfect electric conductors (PECs) can mimic highly localized surface plasmons (LSPs). Here, w…
Effect of Graphene on the Absorption and Extraordinary Transmission of Light in One Dimensional Metallic Gratings
Amirmasood Bagheri, Babak Rahmani, Amin Khavasi
Periodic metallic structures are known to support resonant extraordinary transmission (EOT). When covered with graphene, these structures can be employed to effectively manipulate…
Modeling of Periodic Array of Cut-through Slits with Periodic Surface Conductivity at the Interfaces of an Anisotropic Medium
Babak Rahmani, Khashayar Mehrany
A periodic arrangement of one-dimensional slits carved in perfect electric conductor is investigated and an equivalent model based on the effective medium theory is derived. The pr…