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We report on an integrated optoelectronic regenerative pulse generator comprising an excitable resonant tunneling diode photo-detector, a laser diode, and an optical fiber in a delayed feedback loop enabling signal buffering and robust addressing.
Wireless broadband technologies operating in the 60 GHz range are currently reaching a mature state. Devices with wireless high definition multimedia interfaces (HDMI), operating at 60 GHz, are already commercially available and standards supporting high bit rate operation at 60 GHz, both for personal area networks (PANs) and local area networks (LANs) have already been approved. The widely available...
Optical mm-wave signal generation and up-conversion using external modulation of an optical carrier by means of LiNbO3 Mach-Zehnder (MZ) modulators have proven to be reliable approaches due to the frequency range, excellent system stability, and high spectral purity of the generated signal. The objective of this paper is to compare the performance of different up-conversion strategies in terms of...
In this paper we focus on WDM-PONs employing directly modulated low cost reflective semiconductor optical amplifiers (RSOAs) with modulation bandwidth around 1 GHz. As in all access networks, cost is a key factor for their implementation which can be minimized by network resource sharing with multiple fixed and wireless services. The objective of this paper is to analyze the feasibility and limitations...
Access infrastructure combining fiber optic and millimeter-wave wireless technologies can provide the necessary broadband access required by convergence of wireless and wired networks. Optical millimetre-wave generation using upconversion is considered a cost-effective solution in radio over fiber systems. In this paper we propose a frequency multiplication technique using two Mach-Zehnder in parallel...
The recent advances reported in low cost production components and circuits operating at 60 GHz combined with the increasing consumer demands for wireless high speed applications have lead to a boost in research of millimeter-wave (mm-wave) systems and networks operating in the 60 GHz region. The abundant unlicensed spectrum around 60 GHz have the potential to support consumer demands that require...
Access infrastructure combining fiber optic and wireless technologies can provide the necessary broadband access required by convergence of wireless and wired networks. Optical millimetter-wave generation using up-conversion is considered as a cost-effective solution in radio over fiber systems. In this paper we discuss and compare the robustness against dispersion of three millimetter-wave generation...
This paper discusses hybrid fiber optic access network architectures combining baseband wireline and mm-wave channels. We focus on mm-wave radio over fiber (RoF) optical access network architectures which combine radio subcarrier multiplexing techniques to improve system efficiency with fiber dispersion mitigation provided by optical single sideband modulation techniques. Besides discussing the network...
This paper introduces the basic operational concepts of the RoFnet - reconfigurable radio over fiber network, which is a project supported by the Portuguese Foundation forScience and Technology. This project proposes an innovative radio over fiber optical access network architecture, which combines a low cost base station (BS) design, incorporating reflective semiconductor optical amplifiers, with...
Access infrastructures combining fiber optic and wireless technologies can provide the necessary broadband access required by the convergence of wireless and wired networks. In this paper we discuss a mm-wave radio over fiber (RoF) optical access network architecture, which combines radio subcarrier multiplexing techniques to improve system efficiency with fiber dispersion mitigation provided by optical...
This paper introduces the RoFnet-Reconfigurable Radio over Fiber network, which is a project supported by the Portuguese Foundation for Science and Technology. This project proposes an innovative radio over fiber optical access network architecture, which combines a low cost Base Station (BS) design, incorporating reflective semiconductor optical amplifiers, with fiber dispersion mitigation provided...
This paper presents a signaling architecture for consumer oriented photonic grids. We propose to decrease the end-to-end transmission job delay, by exploring the potential of advanced grid network architectures based on active optical burst switching and active routers. The proposed scheme is discussed in detail and it is shown that conceptually it performs always better than the conventional just...
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