Passive optical network

H - Electricity – 04 – B

Patent

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Details

H04B 10/20 (2006.01) H04B 10/14 (2006.01) H04B 10/207 (2006.01)

Patent

CA 2092298

A head-end station (1) is provided for a passive optical network system arranged to transmit downstream TDMA frames and receive upstream TDMA frames. The head-end station (1) comprises a TDMA master (5) and a plurality of optical stages (4a, 4b) connected in common to the TDMA master (5). The TDMA master (5) assembles incoming data into downstream TDMA frames and demultiplexes upstream TDMA frames. Each optical stage (4a, 4b) is arranged to be connected to a different respective fibre network (3a, 3b) and includes an optical transmitter which modulates an optical signal with downstream TDMA frames from the TDMA master (5) together with an optical receiver arranged to detect an optical signal carrying upstream TDMA frames.

L'invention est une station de tête (1) pour réseau optique passif utilisé pour transmettre des trames AMRT via une liaison descendante et recevoir des trames AMRT via une liaison ascendante. Cette station comporte une unité maîtresse AMRT (5) et une pluralité d'étages optiques (4a, 4b) tous connectés à l'unité maîtresse AMRT (5). Celle-ci assemble les données incidentes en trames AMRT de liaison descendante et démultiplexe les trames AMRT de liaison ascendante. Chaque étage optique (4a, 4b) est installé de façon à pouvoir être connecté à un réseau de fibres différent (3a, 3b) et comporte un émetteur optique qui module un signal lumineux avec des trames AMRT de liaison descendante provenant de l'unité maîtresse AMRT (5), ainsi qu'un récepteur optique pouvant détecter un signal lumineux contenant des trames AMRT de liaison ascendante.

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