Distance-Adaptive Path Allocation in Elastic Optical Path Networks

Bartlomiej KOZICKI
Hidehiko TAKARA
Takafumi TANAKA
Yoshiaki SONE
Kazushige YONENAGA
Masahiko JINNO

IEICE TRANSACTIONS on Communications   Vol.E94-B    No.7    pp.1823-1830
Publication Date: 2011/07/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1823
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
all-optical networks,  fiber optics links and subsystems,  adaptive modulation,  quadrature-amplitude modulation,  quadrature phase-shift keying,  

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We describe a concept and realization of distance-adaptive (DA) resource allocation in spectrum-sliced elastic optical path network (SLICE). We modify the modulation format and cross-connection bandwidth of individual fixed-bit rate optical paths to optimize performance with respect to transmission distance. The shorter paths are allocated a smaller amount of resources which allows reducing the spectrum occupied by the channel. We show in calculation a reduction in required spectral resources of more than 60% when compared to the traditional traffic allocation schemes based on ITU-T grid. The concept is verified experimentally.