H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/437 (2006.01) H04B 10/20 (2006.01) H04B 10/213 (2006.01)
Patent
CA 2196121
The optical node comprises two working directional switches (22,27) connected serially in a primary ring line (2), respectively ahead of and after an extracting and/or inserting unit (11), and further connected serially in a secondary ring line (3), which are adapted to controllably switch the optical signal path between the primary ring line (2) and the secondary ring line (3), and to the extracting and/or inserting unit (11). The node further comprises two backup directional switches associated with the working directional switches and connected operatively in the primary (2) and secondary (3) ring lines to restore the optical node (10) to proper operation on the occurrence of a failure at the working directional switches.
L'invention est un noeud optique comportant deux commutateurs directionnels (22-27) connectés en série dans une ligne de sonnerie primaire (2), l'un en amont et l'autre en aval de l'unité d'extraction et/ou d'insertion (11), et de plus connectés en série dans une ligne de sonnerie secondaire (3) et adaptés de façon à contrôler la commutation du trajet de signaux lumineux entre la ligne de sonnerie primaire (2) et la ligne de sonnerie secondaire (3) et le trajet de signaux lumineux allant à l'unité d'extraction et/ou d'insertion (11). Ce noeud comporte en plus deux commutateurs directionnels de secours associés aux commutateurs directionnels réguliers et connectés de façon opérationnelle dans les lignes de sonnerie primaire (2) et secondaire (3) pour remettre le noeud optique (10) en mode de fonctionnement normal après une défaillance des commutateurs directionnels réguliers.
Kirby Eades Gale Baker
Pirelli Cavi E. Sistemi S.p.a.
Pirelli Cavi S.p.a.
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