An asymmetric access strategy with propagation delay analysis for bandwidth utilization improvement in WDM networks

2011 ◽  
Author(s):  
P. A. Baziana ◽  
I. E. Pountourakis
Keyword(s):  
Propagation Delay ◽  
Wdm Networks ◽  
Delay Analysis ◽  
Bandwidth Utilization

Elastic Optical Networks

2021 ◽  
pp. 537-574
Author(s):  
Debasish Datta
Keyword(s):  
Optical Networks ◽  
Optical Fibers ◽  
Network Capacity ◽  
Wdm Networks ◽  
Bandwidth Utilization ◽  
Waveform Generation ◽  
Frequency Grid ◽  
Effective Network ◽  
Set Up ◽  
Arbitrary Waveform

In WDM networks using a fixed frequency grid, transmission rates can vary for different connections, leading to inefficient bandwidth utilization in optical fibers with lower-rate connections using wide frequency slots. In elastic optical networks (EONs), the frequency grid is made flexible, thereby improving the effective network capacity. A flexible frequency grid consists of smaller frequency slots, and a transmitting node can use multiple slots using suitable modulation techniques, such as optical OFDM, Nyquist-WDM and optical arbitrary waveform generation (OAWG). However, this requires bandwidth-variable transceivers (BVTs) and other devices to set up variable-rate connections. First we discuss the design challenges in EONs and describe the evolving technologies for the network elements. Then we present some offline (LP-based and heuristic) design methodologies for EONs to carry out routing and spectral allocation (RSA) for the required connections. Finally, we present some online fragmentation-aware RSA schemes for the operational EONs. (146 words)

scholarly journals Propagation Delay Analysis of a Soft Open Defect inside a TSV

2011 ◽  
Vol 4 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Shohei Kondo ◽  
Hiroyuki Yotsuyanagi ◽  
Masaki Hashizume
Keyword(s):  
Propagation Delay ◽  
Delay Analysis ◽  
Open Defect

Signal integrity and propagation delay analysis using FDTD technique for VLSI interconnects

2013 ◽  
Vol 13 (1) ◽  
pp. 300-306 ◽  
Author(s):  
Devendra Kumar Sharma ◽  
Brajesh Kumar Kaushik ◽  
R. K. Sharma
Keyword(s):  
Signal Integrity ◽  
Propagation Delay ◽  
Delay Analysis ◽  
Vlsi Interconnects

WDM Long-Haul Networks

2021 ◽  
pp. 371-396
Author(s):  
Debasish Datta
Keyword(s):  
Wavelength Conversion ◽  
Mesh Networks ◽  
Routing And Wavelength Assignment ◽  
Wavelength Assignment ◽  
Wdm Networks ◽  
Analytical Models ◽  
Effective Solution ◽  
Bandwidth Utilization ◽  
Online Routing ◽  
Design Challenges

Ever-increasing traffic in the long-haul networks called for WDM-based transmission, all the more when compared to the metro and access segments. Further, although the interconnected WDM rings served the needs of long-haul networks for some time, mesh-connected WDM networks appeared as a natural and more effective solution, with enhanced connectivity and resilience against network failures. In this chapter, we first examine the basic design challenges and the candidate node configurations for WRON-based mesh networks. Next we present various offline design methodologies for this class of networks using LP-based and heuristic schemes. Impact of wavelength conversion (WC) in mesh-configured WRONs is also examined by using analytical models, and the gain in bandwidth utilization is assessed in WRONs with full WC as compared to those without any WC. Finally, we examine some online routing and wavelength assignment schemes that can be used for operational WRONs. (143 words)

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