Impact of Elastic Optical Paths That Adopt Distance Adaptive Modulation to Create Efficient Networks

Tatsumi TAKAGI
Ken-ichi SATO
Yoshiaki SONE
Masahiko JINNO

IEICE TRANSACTIONS on Communications   Vol.E95-B    No.12    pp.3793-3801
Publication Date: 2012/12/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3793
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission for Communications
elastic optical path network,  distance adaptive modulation,  routing and spectrum assignment,  network design,  

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We propose optical path routing and frequency slot assignment algorithms that can make the best use of elastic optical paths and the capabilities of distance adaptive modulation. Due to the computational difficulty of the assignment problem, we develop algorithms for 1+1 dedicated/1:1 shared protected ring networks and unprotected mesh networks to that fully utilize the characteristics of the topologies. Numerical experiments elucidate that the introduction of path elasticity and distance adaptive modulation significantly reduce the occupied bandwidth.