Abstract
A large advanced optical network was assembled and operated in the
field,featuring access, metropolitan, and core optical networks with advanced
functionality and technology in all parts of the network. It demonstrates the
reliability and viability of photonic technologies and management functions in
a trial representative of a global network infrastructure. The core network is
a transparent all-optical meshed network with wavelength crossconnects partly
2R-regenerating, operating at 2.5 and 10 Gb/s, and supporting various
protection schemes including 1: N shared OCH protection. The metropolitan
network is a ring composed of OADMs supporting OMS protection. The
interconnection to the SuperPON access network is made through an ATM switch.
The ATM-based SuperPON supports a dynamic Medium Access Control (MAC)
protocol. For the first time, a 10 Gb/s wavelength-converted connection was
demonstrated in the field in a transparent all-optical managed network. The
field trial has demonstrated many points of progress as compared to the
previous state of the art: cascadability experiments in a real network with
reasonable distances and low compensation, various node functions,
interworking of various equipment types, new optical protection, and dynamic
MAC protocol. The (transport) TMN/Q3 integrated management system played an
important role to achieve the network experiments: it allowed us to provision
and reconfigure the end-to-end optical paths very quickly (<3 s) from the
centralized management platform. This trial is also the first one
representative of an advanced global optical network infrastructure including
core, metro, and access networks, supporting end-to-end multimedia services.
This article reports the project results before the field deployment which
took place in April 2000.
© 2000 IEEE
PDF Article
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