Leontios Stampoulidis

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efficient burst-level reservations and QoS differentiation in OBS networks Kostas Christodoulopoulos, Leontios Stampoulidis , Efstratios Kehayas, Kyriakos Vlachosand Emmanouel Varvarigos 1: Research Academic Computer Technology Institute and Dept. Computer Engineering and Informatics, University of Patras, GR-26500, Rio, Greece, email:(More)
We demonstrate a 40 Gb/s self-synchronizing, all-optical packet clock recovery circuit designed for efficient packet-mode traffic. The circuit locks instantaneously and enables sub-nanosecond packet spacing due to thelow clock persistence time. A low-Q Fabry-Perot filter is used as a passive resonator tuned to the line-rate that generates a retimed(More)
This paper presents an experimental performance characterization of all-optical subsystems at 40 Gb/s using interconnected hybrid integrated all-optical semiconductor optical amplifier (SOA) Mach–Zehnder interferometer (MZI) gates and flip-flop prototypes. It was shown that optical gates can be treated as generic switching elements and, when efficiently(More)
We demonstrate instantaneous 40 Gb/s clock extraction from 1 ns long data packets separated by 750 ps. The circuit comprises a Fabry-Perot filter and an all-optical power limiting gate and requires very short inter-packet guardbands. ©2005 Optical Society of America OCIS codes: (060.2330) Fiber optics communications; (230.1150) All-optical devices;(More)
We present recent advances in photonic integration introduced by integration-related European research project ISTMUFINS. The contribution of the project in the progress of a functional photonic integration is outlined, from device fabrication to device application focusing on photonic routing using multielement photonic chips. Specifically, we report on(More)
Two new architectures are proposed for designing physical network nodes in packet-switched structures. They allow transparent optical packet networking and are based on the association of various subsystems, which have previously been proposed, and demonstrated. These elements are mainly based on the application of nonlinear behavior in semiconductor(More)
We demonstrate an all-optical circuit capable of generating 40-GHz control signals from flag pulses that can be used to define the switching state of all-optical gates for use with optical packets. The circuit comprises a Fabry-Perot filter and a semiconductor optical amplifier, and with a single pulse it can generate 12 control pulses with 0.64-dB(More)
The objective of this research is to propose two new optical procedures for packet routing and forwarding in the framework of transparent optical networks. The single-wavelength label-recognition and packet-forwarding unit, which represents the central physical constituent of the switching node, is fully described in both cases. The first architecture is a(More)