IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Special Section on Photonic Network Technology for Beyond 5G/6G Era
Bandwidth Abundant Optical Networking Enabled by Spatially-Jointed and Multi-Band Flexible Waveband Routing
Hiroshi HASEGAWA
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2024 Volume E107.B Issue 1 Pages 16-26

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Abstract

The novel optical path routing architecture named flexible waveband routing networks is reviewed in this paper. The nodes adopt a two-stage path routing scheme where wavelength selective switches (WSSs) bundle optical paths and form a small number of path groups and then optical switches without wavelength selectivity route these groups to desired outputs. Substantial hardware scale reduction can be achieved as the scheme enables us to use small scale WSSs, and even more, share a WSS by multiple input cores/fibers through the use of spatially-joint-switching. Furthermore, path groups distributed over multiple bands can be switched by these optical switches and thus the adaptation to multi-band transmission is straightforward. Network-wide numerical simulations and transmission experiments that assume multi-band transmission demonstrate the validity of flexible waveband routing.

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© 2024 The Institute of Electronics, Information and Communication Engineers
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