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A hybrid metropolitan and long‐haul WDM network with end‐to‐end optical channel layer protection performed by metropolitan WDM equipment
Author(s) -
Shi ChaoXiang,
Chen LiPing,
Hodgson Tom,
Koehler Steffen
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(20000220)24:4<260::aid-mop15>3.0.co;2-l
Subject(s) - wavelength division multiplexing , synchronous optical networking , metropolitan area , metropolitan area network , computer network , channel (broadcasting) , telecommunications , multiplexing , engineering , computer science , local area network , geography , wavelength , optics , physics , archaeology
We demonstrate a hybrid metropolitan and long‐haul wavelength‐division multiplexed (WDM) network. In this application, two metropolitan WDM rings are connected to each other by two optically amplified point‐to‐point WDM transmission systems. The metropolitan WDM equipment performs optical channel layer protection switching when a failure occurs in the metropolitan rings or in the long‐haul WDM transport system. This scheme provides an end‐to‐end protected network for the transport of high‐speed data traffic without requiring costly SONET terminals. The protection switching time with this scheme is shown to be much faster than traditional SONET protection times. ©2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 260–263, 2000.