OPTICAL SUBSCRIBER NETWORK SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an optical subscriber network system in which broadcast and communication signals are received.

SOLUTION: The optical subscriber network system is composed of a server side bidirectional optical transmitter including: a first semiconductor laser for transmitting a digital broadcast signal; a second semiconductor laser for transmitting down Internet data; a server side photo-diode for receiving up Internet data; a server side band filter for selecting only the up Internet data; and a server side multi-branch optical waveguide element for separation into the digital broadcast signal and the up and down Internet data, and a subscriber side bidirectional optical receiver including: a subscriber side multi-branch optical waveguide element for separating the data transmitted from the server side bidirectional optical transmitter; a first photo-diode for detecting the digital broadcast signal; a second photo-diode for receiving the down Internet data; and a subscriber side semiconductor laser for outputting the up Internet data.

COPYRIGHT: (C)2004,JPO