An efficient link based model for routing, modulation format and spectrum allocation with quality of transmission consideration in elastic optical networks

2018 ◽  
Vol 11 (3) ◽  
pp. 137
Author(s):  
Sridhar Iyer ◽  
Shree Prakash Singh
Keyword(s):  
Optical Networks ◽  
Spectrum Allocation ◽  
Modulation Format ◽  
Quality Of Transmission

scholarly journals Raman Pumping as an Energy Efficient Solution for NyWDM Flexible-grid Elastic Optical Networks

2017 ◽  
Vol 7 (5) ◽  
pp. 2627
Author(s):  
Arsalan Ahmad ◽  
Andrea Bianco ◽  
Vittorio Curri ◽  
Guido Marchetto ◽  
Sarosh Tahir
Keyword(s):  
Optical Networks ◽  
Spectral Efficiency ◽  
Energy Efficient ◽  
Fiber Types ◽  
European Network ◽  
Modulation Format ◽  
Traffic Loads ◽  
Quality Of Transmission ◽  
Flexible Grid

<p>This paper investigates transparent wavelength routed optical networks using three different fiber types NZDSF, SMF and PSCF - and validates the effectiveness of Hybrid Raman/EDFA Fiber Amplification (HFA) with different pumping levels, up to the moderate 60% pumping regime. Nodes operate on the basis of flexible-grid elastic NyWDM transponders able to adapt the modulation format to the quality-of-transmission of the available lightpath, exploiting up to five 12.5 GHz spectral slots. Results consider a 37- node Pan-European network for variable Raman pumping level, span length and average traffic per node. We show that HFA in moderate pumping regime reduces the power consumption and enhances spectral efficiency for all three fiber types with particular evidence in NZDSF. In essence to that, introduction of HFA is also beneficial to avoid blocking for higher traffic loads.</p>

scholarly journals AI-Based Modeling and Monitoring Techniques for Future Intelligent Elastic Optical Networks

2020 ◽  
Vol 10 (1) ◽  
pp. 363 ◽  
Author(s):  
Xiaomin Liu ◽  
Huazhi Lun ◽  
Mengfan Fu ◽  
Yunyun Fan ◽  
Lilin Yi ◽  
...  
Keyword(s):  
Optical Networks ◽  
Performance Monitoring ◽  
Recent Progress ◽  
Optical Network ◽  
Data Driven ◽  
High Definition ◽  
Optical Performance Monitoring ◽  
Monitoring Tools ◽  
Quality Of Transmission

With the development of 5G technology, high definition video and internet of things, the capacity demand for optical networks has been increasing dramatically. To fulfill the capacity demand, low-margin optical network is attracting attentions. Therefore, planning tools with higher accuracy are needed and accurate models for quality of transmission (QoT) and impairments are the key elements to achieve this. Moreover, since the margin is low, maintaining the reliability of the optical network is also essential and optical performance monitoring (OPM) is desired. With OPM, controllers can adapt the configuration of the physical layer and detect anomalies. However, considering the heterogeneity of the modern optical network, it is difficult to build such accurate modeling and monitoring tools using traditional analytical methods. Fortunately, data-driven artificial intelligence (AI) provides a promising path. In this paper, we firstly discuss the requirements for adopting AI approaches in optical networks. Then, we review various recent progress of AI-based QoT/impairments modeling and monitoring schemes. We categorize these proposed methods by their functions and summarize advantages and challenges of adopting AI methods for these tasks. We discuss the problems remained for deploying AI-based methods to a practical system and present some possible directions for future investigation.

scholarly journals Enhancing GMPLS Signaling Protocol for Encompassing Quality of Transmission (QoT) in All-Optical Networks

2008 ◽  
Vol 26 (19) ◽  
pp. 3318-3328 ◽  
Author(s):  
Filippo Cugini ◽  
Nicola Sambo ◽  
Nicola Andriolli ◽  
Alessio Giorgetti ◽  
Luca Valcarenghi ◽  
...  
Keyword(s):  
Optical Networks ◽  
Signaling Protocol ◽  
All Optical ◽  
Quality Of Transmission
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