Comparison of node architectures for elastic optical networks with waveband conversion

Author

Zhang Ping ; Li Juhao ; Guo Bingli ; He Yongqi ; Chen Zhangyuan ; Wu Hequan

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China

Volume

10

Issue

8

fYear

2013

fDate

Aug. 2013

Firstpage

77

Lastpage

87

Abstract

In Elastic Optical Networks (EONs) with flexible bandwidth allocation, the blocking probability is high because of spectral contention. Similar to the functionality of wavelength conversion in Wavelength-Division-Multiplexing (WDM) networks, waveband conversion has been proposed to solve spectral contention in EONs. In this paper, we discuss the design of node architectures for an EON with waveband conversion. Four node architectures with shared Tuneable Waveband Converters (TWBCs) are proposed, and their blocking performances are evaluated by simulation. Simulation results show that the blocking probability of a node is significantly improved by waveband conversion. The sharing efficiency of waveband converters is also investigated. Simulation results show that at the same blocking rate, the node architecture with converters shared per node can save more than 20% waveband converters compared with that of the one with converters shared per link.

Keywords

bandwidth allocation; optical fibre networks; optical wavelength conversion; wavelength division multiplexing; blocking probability; elastic optical networks; flexible bandwidth allocation; node architectures; sharing efficiency; spectral contention; tuneable waveband converters; waveband conversion; wavelength division multiplexing networks; Optical fiber networks; Optical switches; Optical wavelength conversion; Ports (Computers); WDM networks; EON; TWBC; blocking probability; node architecture;

fLanguage

English

Journal_Title

Communications, China

Publisher

ieee

ISSN

1673-5447

Type

jour

DOI

10.1109/CC.2013.6633747

Filename

6633747