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We show on-demand multi-wavelength spectrum and space defragmentation in an SDM and elastic network with four programmable nodes and two multi-core fiber links. The combined approach is shown to reduce blocking and hardware requirements in small nodes.
We present candidate optical node architectures for the implementation of elastic networks. The proposed architectures are compared in terms of their performance, flexibility and functionality, which ranges from flexible spectrum switching to the provisioning of adaptive architectures with support of elastic multi-dimensional switching. Results show that high node flexibility is advantageous for implementing...
In this paper, we propose and experimentally demonstrate simultaneous format and wavelength conversion of multiple fragmented signals suitable for gridless and multi-granular networks. Conversion of NRZ and large-RZ to short-RZ-OOK by means of a single commercial Quad SOA-MZI is demonstrated for grooming 85.4 Gb/s frame. The output RZ-OOK signal is suitable for further tributary multiplexing onto...
A new flexible networking infrastructure able to provide on-demand services and functionalities is proposed. The benefits of the proposed approach in terms of scalability, resiliency and the flexibility to provide various levels of bandwidth virtualisation and arbitrary topology implementation are discussed in the paper.
An enhanced version of hardware accelerated QoT estimation tool in impairment-aware optical network to support Cloud Computing is designed and evaluated against the different number of lightpaths and wavelengths per link. It outperforms the software version by 28 times in the order of millisecond for a single computation, and up to 3 times more for multiple computations. It sharply decreases the lightpath...
Energy efficiency is becoming an increasingly important factor to consider in day-to-day operations, and the Information, Communication and Technology (ICT) arena is no exception. The energy consumption in the ICT sector is increasing at a rate that deems energy consumption a possible limitation to the continuous fast growth of the future Internet. We address this limitation in two ways. (1) We propose...
This paper presents three innovative GMPLS/PCE/OBST interworking archi-tectures for mesh metro networks which deliver guaranteed contention-free sub-wavelength services with enhanced channel utilization, yet enabling multi-technology interoperability.
A gridless dynamic multi-granular optical network supporting flexible spectrum allocation is proposed and experimentally demonstrated to efficiently accommodate high-speed traffic and increase channel density for lower speed traffic leading to improved network efficiency and scalability.
This paper presents the TSON metro mesh network architecture for guaranteed, statistically-multiplexed services. It proposes tunable time-wavelength assignment, one-way tree-based reservation and node architecture. Results demonstrate high network efficiency, fast service delivery and guaranteed QoS.
An adaptive gridless OXC is demonstrated using field fiber. The OXC adapts its architecture on demand to switch variable type signals in frequency, time and space domain with 1000-fold bandwidth granularity and 1.5 Tb/s throughput.
An enhanced version of hardware accelerated QoT estimation tool in impairment-aware optical network is demonstrated and evaluated against the different number of lightpaths and wavelengths per link. It outperforms the software version by 28 times in the order of millisecond.
This paper proposes an innovative self-managed optical network architecture for heterogenous transparent optical networks. A self-optimized dynamic network testbed that comprises multiple multi bit-rate ligthpaths on a mesh topology that utilizes a dark fiber link has been implemented and evaluated.
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