Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Bruno Romeira"'
Autor:
Artur Andrishak, Bejoys Jacob, Tiago L. Alves, Christian Maibohm, Bruno Romeira, Jana B. Nieder
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract Next-generation energy-efficient photonic integrated systems, such as neuromorphic computational chips require efficient heterogeneous integration of ultracompact light sources and photodetectors through highly dense waveguide circuits. Howe
Externí odkaz:
https://doaj.org/article/028c176e93994a139990265d4e5fd561
Autor:
Qusay Raghib Ali Al-Taai, Matěj Hejda, Weikang Zhang, Bruno Romeira, José M L Figueiredo, Edward Wasige, Antonio Hurtado
Publikováno v:
Neuromorphic Computing and Engineering, Vol 3, Iss 3, p 034012 (2023)
This work reports a nanostructure resonant tunnelling diode-photodetector (RTD-PD) device and demonstrates its operation as a controllable, optically-triggered excitable spike generator. The top contact layer of the device is designed with a nanopill
Externí odkaz:
https://doaj.org/article/78881eabfb114cbda5b810a584d63255
Autor:
Bruno Romeira, Ricardo Adão, Jana B Nieder, Qusay Al-Taai, Weikang Zhang, Robert H Hadfield, Edward Wasige, Matěj Hejda, Antonio Hurtado, Ekaterina Malysheva, Victor Dolores Calzadilla, João Lourenço, D Castro Alves, José M L Figueiredo, Ignacio Ortega-Piwonka, Julien Javaloyes, Stuart Edwards, J Iwan Davies, Folkert Horst, Bert J Offrein
Publikováno v:
Neuromorphic Computing and Engineering, Vol 3, Iss 3, p 033001 (2023)
Nanophotonic spiking neural networks (SNNs) based on neuron-like excitable subwavelength (submicrometre) devices are of key importance for realizing brain-inspired, power-efficient artificial intelligence (AI) systems with high degree of parallelism
Externí odkaz:
https://doaj.org/article/d4f44c3f09dc4100942fd993a58446d5
Autor:
Daniele Pellegrino, Pierre Busi, Francesco Pagliano, Bruno Romeira, Frank W. van Otten, Andrei Yu. Silov, Andrea Fiore
Publikováno v:
APL Photonics, Vol 5, Iss 6, Pp 066109-066109-9 (2020)
Due to their small sizes and low threshold, nanolasers play a pivotal role in the field of low-energy scalable photonic technologies. High-speed modulation of nanolasers is needed for their application in data communication, but its implementation ha
Externí odkaz:
https://doaj.org/article/af09395c75cf41e7aaa2e36f38c52180
Autor:
José M. L. Figueiredo, Charles N. Ironside, Henrique M. Salgado, Luis M. Pessoa, Bruno Romeira
Publikováno v:
Sensors, Vol 13, Iss 7, Pp 9464-9482 (2013)
We report on photo-detectors consisting of an optical waveguide that incorporates a resonant tunneling diode (RTD). Operating at wavelengths around 1.55 μm in the optical communications C band we achieve maximum sensitivities of around 0.29 A/W whic
Externí odkaz:
https://doaj.org/article/76629a0518164e05af4ce3537ffe8187
Autor:
Matej Hejda, Ekaterina Malysheva, Qusay Raghib Ali Al-Taai, Edward Wasige, Victor Dolores-Calzadilla, Jose Figueiredo, Bruno Romeira, Antonio Hurtado
Publikováno v:
2022 IEEE Photonics Conference (IPC).
This work employs spectral and spectral-temporal Photoluminescence (PL) spectroscopy techniques to study the radiative mechanisms in colloidal CdSe/ZnS Quantum Dot (QD) thin films without and with 1% PMMA polymer matrix embedding (QDPMMA). The observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a66f56312d160c90e67b12a54d0c16e4
https://hdl.handle.net/1822/81257
https://hdl.handle.net/1822/81257
Publikováno v:
Nanophotonics, Vol 9, Iss 13, Pp 4149-4162 (2020)
Event-activated biological-inspired subwavelength (sub-λ) photonic neural networks are of key importance for future energy-efficient and high-bandwidth artificial intelligence systems. However, a miniaturized light-emitting nanosource for spike-base
Autor:
Bejoys Jacob, Filipe Camarneiro, Jérôme Borme, Oleksandr Bondarchuk, Jana B. Nieder, Bruno Romeira
Numerous efforts have been devoted to improve the electronic and optical properties of III-V compound materials via reduction of their nonradiative states, aiming at highly-efficient III-V sub-micrometer devices. Despite many advances, there is still
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd20828487ac1fc7da80ed15095329ed
Autor:
Ricardo M. R. Adão, David Castro Alves, João Lourenço, Bruno Romeira, Ignacio Ortega, Jana B. Nieder, José Figueiredo, Juan Arturo Alanis, Filipe Camarneiro, Antonio Hurtado, Julien Javaloyes, Bejoys Jacob, Matej Hejda
Publikováno v:
Emerging Topics in Artificial Intelligence (ETAI) 2021.
Event-activated biological-inspired subwavelength (sub-λ) optical neural networks are of paramount importance for energy-efficient and high-bandwidth artificial intelligence (AI) systems. Despite the significant advances to build active optical arti