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Dr. Chris Vagionas becomes a Fulbright Visiting Scholar 2023-2024

WinPhoS research group member and visiting lecturer at the Dep. of Informatics at the Univ. of Western Macedonia, Dr. Chris Vagionas, received the prestigious Fulbright Visiting Scholarship 2023-2024 to act as a visiting scholar at the Department of Material Science and Engineering of the University of Maryland during the winter semester between Sep. – Dec. 2023.

Dr. Vagionas’ scholarship was entitled “Vespucci – IC, Non-VolatilE materialS and Photonic memory elements for Ultra-fast optical Computing and Communication applICations”, focusing on designing, integrating, characterizing and demonstrating Electrically Programmable Non-Volatile Silicon Photonic Memory Arrays based on Sb2Se3 Phase Change Materials.

His scholarship intensified a prior collaboration of WinPhoS Research group with the group of Prof. Carlos Rios Ocampo at University of Maryland and Prof. Nathan Youngblood at University of Pittsburg focused on photonic (computational) memories: tunable nanophotonics for data storage and computing. Dr’ Vagionas scholarship forms the ideal complementarity between Materials Sciences and Photonic Integration of the U.S. with the Computing and Communications Sciences of WinPhoS research group, promoting bilateral exchange of knowledge and strengthening the bonds between the three aspiring young academics and investigators.

Fulbright in Greece (https://www.fulbright.gr/en/) provides up to 10 scholarships (only) to Greek professors and researchers of any discipline on an annual basis, to conduct research and lectures at US universities, to promote mutual understanding and long-term research collaborations, with Dr. Vagionas ranking among the top ten to receive the scholarship for 2023-2024.

Many thanks to Prof. Carlos Rios and Prof. Nathan Youngblood for the excellent collaboration and to the UMD’s PhD team members Chuanyu Lian and Sun Hongyi for the great hospitality and fun time in the lab!






We were delighted to welcome last week Dr. Hideyuki Nasu from Furukawa Electric, Japan, to our lab in Thessaloniki, Greece!

During his visit, Dr. Nasu introduced the company’s work and highlighted recent advancements and research directions in optical communications through his presentation titled: “Introduction to Furukawa Electric and FITEL Products – Research on VCSEL-based Transceivers and High Optical Power External Laser Sources for Co-Packaged Optics (CPO)”.

We sincerely thank Dr. Nasu for his visit and valuable contribution, as we are exploring future perspectives in photonics technologies.




WinPhoS researcher Mr. Theodoros Moschos presented the paper "A zero-electrical-power Silicon Photonic Ternary Content Addressable Memory Bank" at OFC 2026 (March 7-11) in Los Angeles, California, USA.





Paper link: https://winphos.web.auth.gr/index.php/pdf/[OFC] A zero-electrical-power Silicon Photonic Ternary Content Addressable Memory Bank.pdf


Presentation link: https://winphos.web.auth.gr/index.php/ppt/[OFC_2026]A zero electrical power Silicon Photonic Ternary Content Addressable Memory Bank.pptx

Our Postdoctoral Researcher Dr. Apostolos Tsakyridis, will deliver an invited talk at OFC 2026 focusing on Hyperdimensional Photonic AI Computing.

All Authors: Apostolos Tsakyridis, Miltiadis Moralis-Pegios, Stefanos Kovaios, Antonios Prapas, Theodoros Moschos, Christos Pappas, Nikos Pleros.

📚 Session: Photonic AI Computing (W3C)

📅 March 18, 2026 🕝 3:15–3:30 PM (PDT) 📍 Room 408A

Many thanks to HAETAE, STARLight and GATEPOST projects for supporting this work!

✨ Don’t miss this exciting talk if you’re interested in the future of photonic AI computing!


We’re thrilled to announce that our team will be actively participating in OFC 2026 next week in Los Angeles, California, USA, contributing three papers and one poster.


1️⃣ Paper: A Zero-Electrical-Power Silicon Photonic Ternary Content Addressable Memory Bank

Presenting Author: Theodoros Moschos

All Authors: Stelios Simos, Theodoros Moschos, Stefanos Kovaios, Apostolos Tsakyridis, Miltiadis Moralis-Pegios, Isaac Johnson, Theo Rangarajan, Thalia-Dominguez Bucio, James Gates, Frederic Gardes, Nikos Pleros.

Session: Optical Computing (M1G)

📅 March 16, 2026 🕝 8:30–8:45 AM (PDT) 📍 Room 502A


2️⃣ Paper: Photonic Kolmogorov–Arnold Networks Utilizing SOA-Based SPM Broadening and Filtering Learnable Activations

Presenting Author: Themistoklis Chrysostomidis

All Authors: Stefanos Kovaios, Themistoklis Chrysostomidis, Dimitrios Spanos, Apostolos Tsakyridis, Miltiadis Moralis-Pegios, Nikolaos Passalis, Charis Mesaritakis, Adonis Bogris, Anastasios Tefas, Konstantinos Vyrsokinos, Nikos Pleros.

Session: Photonic AI Computing (W3C.3)

📅 March 18, 2026 🕝 2:45–3:00 PM (PDT) 📍 Room 408A


3️⃣ Paper: Photonic Analog-to-Digital Conversion (ADC) using Photonic Neural Network-assisted Quantization

Presenting Author: Antonios Prapas

All Authors: Antonios Prapas, Georgios Tsamis, Apostolos Tsakyridis, Miltiadis Moralis-Pegios, David Lazovsky, Nikos Pleros

Session: Photonic AI Computing (W3C)

📅 March 18, 2026 🕝 3:15 PM – 3:30 PM (PDT)📍 Location: Room 408A


4️⃣ Poster: Photonic Deep Learning Using In-Situ Optical Backpropagation for Training Photonic Linear Neural Layers

Presenting Author: Odysseas Asimopoulos

All Authors: Odysseas Asimopoulos, Stefanos Kovaios, Apostolos Tsakyridis, Miltiadis Moralis-Pegios, Loukia Avramelou, Nikolaos Passalis, Anastasios Tefas, Konstantinos Vyrsokinos, Nikos Pleros.

Session: Poster Session II (Th2A)

📅 March 19, 2026 🕝 10:30 AM 📍 Petree Hall C


🙏 Many thanks to the European Commission for supporting this research through the projects GATEPOST, ALLEGRO, HAETAE, SYMPHONY, AMBROSIA, and OCTAPUS.

Christos Pappas, WinPhoS researcher, was awarded the 2025 Awards of Excellence for Young Researcher, conferred by the Faculty of Sciences at a special ceremony organized by the Dean’s Office of the Faculty. The event took place on Wednesday, 17 December 2025, at 12:00, in the “Alexandros Papanastasiou” Ceremonial Hall of the Old Building of the Faculty of Philosophy.

The Awards of Excellence aim to recognize the continuous efforts of the members of the Faculty of Sciences toward contribution and excellence, through outstanding achievements that highlight the Faculty’s work both in Greece and internationally.

Link: https://www.sci.auth.gr/wp-content/uploads/sites/117/2025/11/%CE%91%CF%80%CE%BF%CF%84%CE%B5%CE%BB%CE%AD%CF%83%CE%BC%CE%B1%CF%84%CE%B1_%CE%91%CF%80%CE%BF%CE%BD%CE%BF%CE%BC%CE%AE-%CE%92%CF%81%CE%B1%CE%B2%CE%B5%CE%AF%CF%89%CE%BD-%CE%91%CF%81%CE%B9%CF%83%CF%84%CE%B5%CE%AF%CE%B1%CF%82-%CE%9D%CE%AD%CE%BF%CF%85-%CE%95%CF%81%CE%B5%CF%85%CE%BD%CE%B7%CF%84%CE%AE-2025_%CE%B3%CE%B9%CE%B1-%CE%B9%CF%83%CF%84%CE%BF%CF%83%CE%B5%CE%BB%CE%AF%CE%B4%CE%B1.pdf

Contact Us

  • Wireless and Photonic Systems and Networks Research Group
  • Balkan Center, Building A
  • 10th klm Thessalonikis - Thermis
  • 57001 - Greece
  • +30 2310 990588
  • +30 2310 990589

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