Results 21 to 30 of about 261 (83)
Key technologies development and application prospect of ROADM all-optical switching network
Dianxin kexue, 2022 The development history of reconfigurable optical add/drop multiplexer (ROADM) networks, ROADM technical solutions and the deployment of ROADM networks in China were described.And the development direction of the key technologies of ROADM was described ...
Kai LV +4 more
doaj +2 more sources
After Failure Repair Optimization in Dynamic Flexgrid Optical Networks [PDF]
Optical Fiber Communication Conference, 2014 We introduce the problem of reoptimizing the network after a link failure has been repaired as an effective way for reducing capacity usage and improving network performance. Numerical results show gains higher than 42%.
Marc Ruiz 0001 +5 more
openaire +2 more sources
Link Design and Legacy Amplifier Limitation in Flex-Grid Optical Networks
IEEE Photonics Journal, 2016 Flex-grid technology is an effective means to improve the spectral efficiency of optical communication. For a given amplifier spectral bandwidth, it gives rise to the increase in the number of optical channels as it reduces channel spacing. Therefore, in
Djamel Amar +6 more
doaj +1 more source
In-operation planning in flexgrid optical core networks
, 2023 New generation applications, such as cloud computing or video distribution, can run in a telecom cloud infrastructure where the datacenters (DCs) of telecom operators are integrated in their networks thus, increasing connections' dynamicity and resulting in time-varying traffic capacities, which might also entail changes in the traffic direction along ...
openaire +4 more sources
Performance Evaluation of Light-Tree Schemes in Flexgrid Optical Networks
IEEE Communications Letters, 2014 Peer ...
Ruiz Ramírez, Marc +1 more
openaire +3 more sources
Filter optimization in SDN-based flexgrid networks
, 2014 The novel super-filter technique for flexgrid optical networks is proposed to compact spectrum-contiguous lightpaths. The technique is applied in a specifically extended SDN architecture, showing significant gains in terms of spectral efficiency.Peer ...
Cugini, Filippo +17 more
core +1 more source
Effect of Link Margin and Frequency Granularity on the Performance of a Flexgrid Optical Network
39th European Conference and Exhibition on Optical Communication (ECOC 2013), 2013 We show how dynamically adjustable modulation formats can be used to reduce link margins in flexgrid networks, reverting to lower order QAM due to reduced OSNR, if ageing occurs. Spectral savings amount to as much as 63% gain in capacity across a network using 64QAM with a fine frequency granularity of 6.25 GHz, with variable baud rate transponder ...
Abhijit, Mitra +3 more
openaire +2 more sources
Planning fixed to flexgrid gradual migration: drivers and open issues
, 2014 Flexgrid technology has recently been presented as the most promising option for upgrading the currently operating fixed grid optical networks and extending their capacity to be able to deal with the massive traffic volumes forecast for the next decade ...
Ruiz Ramírez, Marc +14 more
core +1 more source
Cognitive Control-Loop for Elastic Optical Networks with Space-Division Multiplexing. [PDF]
Sensors (Basel), 2021 Trindade S +3 more
europepmc +1 more source
, 2014 A PCE-based strategy for LSP re-optimization in flexgrid optical networks is experimentally validated. A front- and back-end stateful PCE architecture is deployed, wherein automatic and coordinated operations (e.g., computation delegation, database ...
Gifre Renom, Lluís +5 more
core +1 more source