22,929 research outputs found
Evolution towards Smart Optical Networking: Where Artificial Intelligence (AI) meets the World of Photonics
Smart optical networks are the next evolution of programmable networking and
programmable automation of optical networks, with human-in-the-loop network
control and management. The paper discusses this evolution and the role of
Artificial Intelligence (AI)
Entanglement Distribution in Optical Networks
The ability to generate entangled photon-pairs over a broad wavelength range
opens the door to the simultaneous distribution of entanglement to multiple
users in a network by using centralized sources and flexible
wavelength-division multiplexing schemes. Here we show the design of a
metropolitan optical network consisting of tree-type access networks whereby
entangled photon-pairs are distributed to any pair of users, independent of
their location. The network is constructed employing commercial off-the-shelf
components and uses the existing infrastructure, which allows for moderate
deployment costs. We further develop a channel plan and a network-architecture
design to provide a direct optical path between any pair of users, thus
allowing classical and one-way quantum communication as well as entanglement
distribution. This allows the simultaneous operation of multiple quantum
information technologies. Finally, we present a more flexible backbone
architecture that pushes away the load limitations of the original network
design by extending its reach, number of users and capabilities.Comment: 26 pages, 12 figure
Triple Play Services in XG-PON Network.
This paper focuses on Triple Play services in XG-PON networks and their implementation and analysis in NS-3. Nowadays, Triple Play services dominate copper/optical networks. The network simulator allowed simulation of Passive Optical Networks (PON), especially XG-PON. Each service in the XG-PON simulation is represented OnOff application with different parameters. This article describes implementation and analysis of these services in basic topology of the XG-PON network
Optical Network Models and their Application to Software-Defined Network Management
Software-defined networking is finding its way into optical networks. Here,
it promises a simplification and unification of network management for optical
networks allowing automation of operational tasks despite the highly diverse
and vendor-specific commercial systems and the complexity and analog nature of
optical transmission. A fundamental component for software-defined optical
networking are common abstractions and interfaces. Currently, a number of
models for optical networks are available. They all claim to provide open and
vendor agnostic management of optical equipment. In this work, we survey and
compare the most important models and propose an intent interface for creating
virtual topologies that is integrated in the existing model ecosystem.Comment: Parts of the presented work has received funding from the European
Commission within the H2020 Research and Innovation Programme, under grant
agreeement n.645127, project ACIN
Adaptive optical networks using photorefractive crystals
The capabilities of photorefractive crystals as media for holographic interconnections in neural networks are examined. Limitations on the density of interconnections and the number of holographic associations which can be stored in photorefractive crystals are derived. Optical architectures for implementing various neural schemes are described. Experimental results are presented for one of these architectures
Topological Phenomena in Classical Optical Networks
We propose a scheme to realize a topological insulator with optical-passive
elements, and analyze the effects of Kerr-nonlinearities in its topological
behavior. In the linear regime, our design gives rise to an optical spectrum
with topological features and where the bandwidths and bandgaps are
dramatically broadened. The resulting edge modes cover a very wide frequency
range. We relate this behavior to the fact that the effective Hamiltonian
describing the system's amplitudes is long-range. We also develop a method to
analyze the scheme in the presence of a Kerr medium. We assess robustness and
stability of the topological features, and predict the presence of chiral
squeezed fluctuations at the edges in some parameter regimes.Comment: 18 pages, 9 figure
Computing matrix inversion with optical networks
With this paper we bring about a discussion on the computing potential of
complex optical networks and provide experimental demonstration that an optical
fiber network can be used as an analog processor to calculate matrix inversion.
A 3x3 matrix is inverted as a proof-of-concept demonstration using a fiber
network containing three nodes and operating at telecomm wavelength. For an NxN
matrix, the overall solving time (including setting time of the matrix elements
and calculation time of inversion) scales as O(N^2), whereas matrix inversion
by most advanced computer algorithms requires ~O(N^2.37) computational time.
For well-conditioned matrices, the error of the inversion performed optically
is found to be less than 3%, limited by the accuracy of measurement equipment.Comment: 5 page
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