HAMED TARI

PhD Graduate

PhD program:: XXXVI


supervisor: Prof. Eugenio Fazio

Thesis title: Reconfigurable Plasmonic Networks Via Hybrid Plasmonic-Solitonic Interconnections

This thesis documents the culmination of an extensive research and development endeavor focused on the design, implementation, and optimization of a highly efficient and compact photonic system inspired by biological neural networks. The primary objective was to create a system capable of emulating the intricate functionalities of biological neurons and their interconnections while addressing inherent limitations through material adjustments and geometric refinements. The journey commenced with a fundamental goal of miniaturization and increased density of neurons and interconnections, guided by the aspiration to closely mimic biological neural networks. Central to our approach was the integration of memory and processing functions, achieved passively through the utilization of photorefractive materials. This passive integration, devoid of active control mechanisms, ensured seamless operation while enabling nuanced and adaptive responses to incoming signals. Key milestones in the development process included the introduction of solitonic waveguides within a simple geometry, demonstrating the feasibility of generating solitons from diffracted light of Surface Plasmon Polaritons (SPP). This milestone required addressing challenges related to diffraction losses and divergence angles, culminating in efficient soliton generation and distribution. Further refinements were achieved through innovative beam splitter designs, enabling balanced signal distribution over short distances and enhancing system compactness. Transitioning to Metal-Insulator-Metal (MIM) waveguides optimized signal propagation, reducing losses while facilitating angle-insensitive coupling and backpropagation procedures vital for photonic neural networks. The system's evolution culminated in the realization of increased interconnection density, enabling 4-digit configurations with supervised and unsupervised training capabilities. These advancements underscore the robustness and versatility of the developed system, which can accommodate a wide range of machine learning algorithms, demonstrating its potential in various applications requiring complex signal processing and decision-making tasks. This thesis contributes to the growing body of research in photonic systems and their application in computational and cognitive domains. The iterative process of innovation and refinement outlined herein serves as a blueprint for future endeavors aimed at pushing the boundaries of photonic technologies in advancing computational and cognitive systems.

Research products

11573/1708675 - 2024 - Photorefraction simulates well the plasticity of neural synaptic connections
Bile, Alessandro; Tari, Hamed; Pepino, Riccardo; Nabizada, Arif; Fazio, Eugenio - 01a Articolo in rivista
paper: BIOMIMETICS (Switzerland: MDPI AG Basel) pp. - - issn: 2313-7673 - wos: WOS:001210171100001 (0) - scopus: (0)

11573/1710216 - 2024 - Novel highly efficient buried gratings for selective coupling of SPP waves onto single interfaces
Nabizada, Arif; Tari, Hamed; Bile, Alessandro; Fazio, Eugenio - 01a Articolo in rivista
paper: NANOMATERIALS (Basel : MDPI) pp. - - issn: 2079-4991 - wos: WOS:001231325400001 (0) - scopus: (0)

11573/1711223 - 2024 - Immobilization of photorefractive solitons by charge anchoring on conductive walls: publisher’s note
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Fazio, E - 01f Lettera, Nota
paper: OPTICS LETTERS (Washington, D.C. : Optical Society of America) pp. - - issn: 1539-4794 - wos: (0) - scopus: (0)

11573/1675546 - 2023 - Innovative and non-invasive method for the diagnosis of dyschromatopsia and the re-education of the eyes
Bile, Alessandro; Bile, Gianmarco; Pepino, Riccardo; Tari, Hamed - 01a Articolo in rivista
paper: RESEARCH ON BIOMEDICAL ENGINEERING (Rio de Janeiro RJ: Sociedade Brasileira de Engenharia Biomédica) pp. - - issn: 2446-4740 - wos: (0) - scopus: 2-s2.0-85149037005 (0)

11573/1690459 - 2023 - Solitonic Neural Network: A novel approach of Photonic Artificial Intelligence based on photorefractive solitonic waveguides
Bile, Alessandro; Tari, Hamed; Pepino, Riccardo; Nabizada, Arif; Fazio, Eugenio - 04d Abstract in atti di convegno
conference: EOSAM 2023 (Dijon (France))
book: EPJ Web of Conferences - ()

11573/1697237 - 2023 - Design of a buried grating structure for the optimization of Surface Plasmon Polariton wave excitation at the lower interface of a metallic nanostrip
Nabizada, Arif; Tari, Hamed; Fazio, Eugenio - 04d Abstract in atti di convegno
conference: SPIE-Nonlinear Optics and Applications XIII, Published 2023 (Prague (Cech Republic))
book: SPIE-Nonlinear Optics and Applications XIII, Published 2023 - ()

11573/1685621 - 2023 - Ultra-broadband interconnection between two SPP nanostrips by a photorefractive soliton waveguide
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Fazio, Eugenio - 01a Articolo in rivista
paper: OPTICS EXPRESS (Optical Society of America:2010 Massachusetts Avenue Northwest:Washington, DC 20036:(800)762-6960, (202)223-8130, EMAIL: custserv@osa.org, INTERNET: http://www.osa.org, Fax: (202)223-1096) pp. 26092- - issn: 1094-4087 - wos: WOS:001051353100002 (3) - scopus: 2-s2.0-85168841583 (4)

11573/1695917 - 2023 - Immobilization of photorefractive solitons by charge anchoring on conductive walls
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Fazio, Eugenio - 01a Articolo in rivista
paper: OPTICS LETTERS (Washington, D.C. : Optical Society of America) pp. - - issn: 1539-4794 - wos: WOS:001150266200002 (3) - scopus: (0)

11573/1690460 - 2023 - Realization of tuneable ultrabroadband interconnection for solitonic-plasmonic synapsis by exploiting epsilon near zero conducting oxides
Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Pepino, Riccardo; Fazio, Eugenio - 04d Abstract in atti di convegno
conference: EOSAM 2023 (Dijon (France))
book: EPJ Web of Conferences - ()

11573/1638276 - 2022 - Episodic memory and information recognition using solitonic neural networks based on photorefractive plasticity
Bile, Alessandro; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: APPLIED SCIENCES (Basel: MDPI AG, 2011-) pp. - - issn: 2076-3417 - wos: WOS:000809946300001 (4) - scopus: 2-s2.0-85131759485 (5)

11573/1604047 - 2022 - Novel Model Based on Artificial Neural Networks to Predict Short-Term Temperature Evolution in Museum Environment
Bile, Alessandro; Tari, Hamed; Grinde, Andreas; Frasca, Francesca; Siani, Anna Maria; Fazio, Eugenio - 01a Articolo in rivista
paper: SENSORS (Basel : Molecular Diversity Preservation International (MDPI), 2001-) pp. - - issn: 1424-8220 - wos: WOS:000746934900001 (7) - scopus: 2-s2.0-85123680948 (9)

11573/1663008 - 2022 - Optical soliton neural networks
Fazio, Eugenio; Bile, Alessandro; Tari, Hamed - 02a Capitolo o Articolo
book: Artificial Neural Networks - Recent Advances, New Perspectives and Applications - ()

11573/1604653 - 2022 - Sigmoid type neuromorphic activation function based on saturable absorption behavior of graphene/PMMA composite for intensity modulation of surface plasmon polariton signals
Tari, Hamed; Bile, Alessandro; Moratti, Francesca; Fazio, Eugenio - 01a Articolo in rivista
paper: PLASMONICS (Norwell, MA : Springer Science + Business Media, c2006-) pp. - - issn: 1557-1955 - wos: WOS:000745434700001 (6) - scopus: 2-s2.0-85123233606 (7)

11573/1564460 - 2021 - Supervised and unsupervised learning using a fully-plastic all-optical unit of artificial intelligence based on solitonic waveguides
Bile, Alessandro; Moratti, Francesca; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: NEURAL COMPUTING & APPLICATIONS (Berlin, London, New York: Springer Verlag) pp. - - issn: 0941-0643 - wos: WOS:000678291400001 (6) - scopus: 2-s2.0-85111117022 (6)

11573/1540611 - 2021 - Plasmonic-Solitonic coupling structure
Camponeschi, Federico; Bile, Alessandro; Tari, Hamed; Fazio, Eugenio - 01a Articolo in rivista
paper: INTERNATIONAL JOURNAL OF SCIENTIFIC ENGINEERING AND APPLIED SCIENCE (Chennai: IJSEAS) pp. - - issn: 2395-3470 - wos: (0) - scopus: (0)

11573/1540606 - 2021 - Development of sol-gel based carbon ceramic electrode modified by graphene oxide - polypyrrole nanocomposite for simultaneous determination of uric acid and dopamine in presence of ascorbic acid
Reza Majidi, Mir; Tari, Hamed; Bile, Alessandro; Fazio, Eugenio - 01a Articolo in rivista
paper: INTERNATIONAL JOURNAL OF SCIENTIFIC ENGINEERING AND APPLIED SCIENCE (Chennai: IJSEAS) pp. - - issn: 2395-3470 - wos: (0) - scopus: (0)

11573/1481117 - 2020 - Implementation of neuromorphic activation function within Surface Plasmon Polariton circuits
Tari, Hamed; Bile, Alessandro; Moratti, Francesca; Fazio, Eugenio - 04f Poster
conference: ICOP2020 Italian Optics and Photonics Conference (Parma)
book: ICOP2020 Italian Optics and Photonics Conference - ()

11573/1481124 - 2020 - Surface Plasmon Polariton neuromorphic circuit with sigmoid activation function
Tari, Hamed; Bile, Alessandro; Moratti, Francesca; Fazio, Eugenio - 04f Poster
conference: EPS-QEOD Europhoton (Praga)
book: EPS-QEOD Europhoton - ()

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