Optical cross-connect system incorporated with newly developed operation and management system

Author

Shiragaki, Tatsuya ; Henmi, Naoya ; Kato, Tomoaki ; Fujiwara, Masahiko ; Misono, Masatoshi ; Shiozawa, Takahiro ; Suzuki, Shuji

Author_Institution

C&C Media Res. Labs., NEC Corp., Kawasaki, Japan

Volume

16

Issue

7

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

1179

Lastpage

1189

Abstract

The optical cross-connect (OXC) system described in this paper increases the operation flexibility and reliability of the trunk-line optical networks used for data communication. It features an OXC node comprised of a photonic switching network and a conventional electric switching network that are connected hierarchically. The operation and management scheme proposed for this OXC system uses the concept of an optical path and an optical section. The OXC system allows hitless network reconfiguration by switching the photonic switches gradually and without interference effects. An experimental OXC network showed that a broken optical path is restored, by rerouting, within 50 ms. Experiments using a LiNbO₃ 8×8 photonic switch matrix also showed that the OXC system provides photonic hitless switching. These results confirm the feasibility of flexibly reconfigurable and fast-restorable OXC systems

Keywords

data communication; maintenance engineering; photonic switching systems; telecommunication network management; telecommunication network routing; 50 sec; LiNbO₃; OAM scheme; data communication; electric switching network; experimental OXC network; fast-restorable OXC systems; hitless network reconfiguration; management system; operation system; optical cross-connect system; optical path; photonic switch matrix; photonic switching network; reconfigurable OXC systems; reliability; rerouting; trunk-line optical networks; Communication switching; Data communication; Laboratories; National electric code; Optical fiber networks; Optical switches; Photonics; Protection; Telecommunication network reliability; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.725188

Filename

725188