News

PhosNet group at PIC 2017

Dr. Dimitris Tsiokos will give an invited talk at PIC 2017 that will be held during 7-8 March in Brussels, Belgium. The title of the talk will be "CMOS compatible plasmo-photonics for mass-manufactured, powerful PICs".

 
PhoeniX BV RAMPLAS Press Release

Read the press release from RAMPLAS consortium member PhoeniX B.V. More details can be found in the project's official website http://www.ict-ramplas.eu/.

 
The first Greek workshop on Photonics

The first Greek workshop on Photonics will take place at National Hellenic Research Foundation (NHR), 16-17 May 2016. Here the complete announcement.


 
PhosNet group at ICTON 2015

Ms. Theoni Alexoudi will give an invited talk at ICTON 2015 that will be held during 5-9 July in Budapest, Hungary. The title of the talk will be "WDM-enabled Optical RAM and Optical Cache memory architectures for Chip Multiprocessors"

 
Dimitrios Fitsios 2014 IEEE Graduate Student Fellowship

Phosnet member Mr. Dimitrios Fitsios has been awarded the very prestigious 2014 Graduate Student Fellowship from the IEEE Photonics Society. 

 

Contact Info

      Dr. Amalia Miliou
Telephone Number +30 2310 998407
E-mail Address amiliou[at]csd.auth.gr

       Dr. Nikos Pleros
Telephone Number +30 2310 998776
E-mail Address npleros[at]csd.auth.gr

PhosNET’s expertise proceeds along the complete chain from device and circuit technology up to systems and networks. Our main research interests are currently focused on:

researchoverview

Optical Interconnects

PhosNet Research - Optical InterconnectsAs the need for high aggregate traffic and low-energy transmission and routing in High Performance Computing Systems and Data Centers increases, data communications and data interconnects are rapidly adopting optical communication technologies as their mainstream infrastructure. The rapid progress in photonic integration technologies is coming with a great promise for ultra-high speed optical data transport and switching in computer-, backplane-, board-to-board, inter-chip and eventually also intra-chip interconnects. PhosNET’s current interests in this field lie in the employment of plasmonics into Tb/s on-chip routing fabrics and in the investigation of high-speed optical RAM-enabled computing and communications systems. PhosNET intends to turn the low-energy and small-footprint plasmonic elements into practical and highly functional data routing structures towards enabling Tb/s traffic routing with just a few mW/Gb/s energy requirements. On the same line, our aim is to exploit low-power and multi-Gb/s optical RAM technologies and architectures towards overcoming the “Memory Wall” problem witnessed since years in the computing community.

Optical Buffering and Optical RAM

Optical RAMPhosNET members have been the firsts to demonstrate an all-optical static RAM cell solving for the first time the problem of storing and retrieving light at will. This on-going activity aims at investigating alternative optical RAM architectures and technologies with the emphasis being on enabling read/write speeds up to 100Gb/s, chip-scale low-energy silicon integrated optical RAM designs and innovative optical RAM-enabled applications in the fields of communications and computing.

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Optical Access and Radio-over-Fiber networks

Optical Access Radio over FiberRadio-over-Fiber (RoF) networks offer a promising communication paradigm for transmitting broadband wireless signals as well as heterogeneous wireless technologies over optical fiber infrastructure. PhosNET’s aim is to build upon the remarkable progress of RoF physical layer technologies towards demonstrating innovative concepts and protocols for mobile 60GHz wireless LAN over fiber environments. PhosNET emphasizes currently in the implementation of 60GHz RoF networks that will be capable of transmitting 60GHz broadband wireless signals over fiber-based links down to the mobile end-user, retaining all the attractive aspects of wireless communications: seamless communication, mobility, medium-transparent dynamic capacity allocation and multiple-user access. The ultimate goal extends along the functional convergence of optical FTTx and heterogenous wireless services over the same fiber-based infrastructure, like Passive Optical Networks (PONs).

Optical Signal Processing for Data Routing and Switching

Data manipulation directly in the optical domain has raised expectations for high-speed processing well beyond 100 Gb/s. This belief has been revitalized during the last years due to the rapid progress of optical integration technologies that can yield miniaturized and highly functional optical circuits capable of performing almost any type of useful processing tasks Signal Processingfor data routing and switching purposes at rates greater than 40Gb/s. PhosNET is interested in several aspects of signal processing functionalities for datacom routing and switching, including wavelength conversion, clock recovery, contention resolution, header processing etc. PhosNET is continuously interested in adopting new, emerging optical technologies and transform them into high-end routing and switching systems.·

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Secure Optical Communication Systems using Chaos

Secure optical communications are targeted by PhosNET through the utilization of chaos as a means of data encryption. Chaotic signals are actually broadband information carriers providing enhanced security levels in data transmission at the physical layer. Key features of chaos are a noise-like time series and sensitive dependence on initial conditions. These characteristics give rise to a number of critical advantages when exploitedchaos in the context of chaotic transmissions: extremely low probability of detection of the information signal and extremely low probability of interception. Synchronization of dynamical systems is a challenging scientific pursuit and it has been realized that chaotic signals can also be used for synchronization with potential applications in fields like information processing and secure communications. PhosNET intends to exploit optical chaotic technologies towards increasing the level of security in optical transport, targeting also the combination of optical and wireless chaotic technologies towards strengthening the data privacy and security levels at the 60GHz mm-wave radio.

Biophotonics

Among PhosNET’s recently launched research activities is the application of concepts and technologies stemming from the optical telecommunications field into the field of biophotonics, primarily for imaging and for pressure/shear fiber-based sensing purposes. In this context, BiophotonicsPhosNET has established a close collaboration with the MOVE Laboratory of Prof. Yiorgos Papaioannou at the University of Wisconsin, Milwaukee and the company SAFE, and has demonstrated a 2x2 2-D PDMS-embedded Fiber Bragg Grating pressure sensing surface that provides real-time, high-sensitivity pressure measurements utilizing both power loss and wavelength shift measurement techniques. This sensor is suitable for Human Machine Interface systems that are considered vital in several areas of orthopedics, like clinical beds for pressure ulcer onset prevention and monitoring, wheelchairs, etc.