IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Real-Time Experiment and Numerical Analysis of Highly-Survivable Adaptive Restoration for High-Capacity Optical Signal Transmission
Hiroki KAWAHARAKohei SAITOMasahiro NAKAGAWATakashi KUBOTakeshi SEKITakeshi KAWASAKIHideki MAEDA
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2021 Volume E104.B Issue 4 Pages 360-369

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Abstract

An optical-layer adaptive restoration scheme is validated by a real-time experiment and numerical analyses. In this paper, it is assumed that this scheme can adaptively optimize the bitrate (up to 600Gb/s) and an optical reach with 100Gb/s granularity to maintain high-capacity optical signal transmission. The practicality of 600-Gb/s/carrier optical signal transmission over 101.6-km field-installed fiber is confirmed prior to the adaptive restoration experiment. After modifying the field setup, a real-time experiment on network recovery is demonstrated with bitrate adaptation for 600-Gb/s to 400-Gb/s signals. The results indicate that this scheme can restore failed connections with recovery times comparable to those of conventional restoration scheme; thus 99.9999% system availability can be easily attained even under double-link failures. Numerical analysis clarifies that adaptive restoration can recover >80% of double-link failures on several realistic topologies and improvement amount against conventional scheme is semi-statistically characterized by restoration path length.

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© 2021 The Institute of Electronics, Information and Communication Engineers
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