METHOD OF TRANSMITTING BROADCASTING SIGNAL IN PASSIVE OPTICAL SUBSCRIBER NETWORK SYSTEM, AND THE PASSIVE OPTICAL SUBSCRIBER NETWORK SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a passive optical subscriber network system and a method of transmitting a broadcast signal in the same system.

SOLUTION: The passive optical subscriber network system comprises: a central office that generates a broadcasting signal and a downstream optical data signal using a coding method guaranteeing a run-length, multiplexes and transmits the downstream optical data signal and the broadcasting signal; a remote node that transmits the multiplexed downstream optical data signal and broadcasting signal received from the central office to one or more optical subscriber units; and a gain medium which is located on a transmission line between the central office and the remote node, and amplifies the broadcasting signal using the downstream optical data signal as a pump light source. Accordingly, a high gain can be obtained by amplifying the broadcasting signal using the gain medium located on the transmission line without a separate pump light source for the broadcasting signal.

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