CATV OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION SYSTEM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a CATV optical transmission device capable of simultaneously performing video signal and CM communication and OLT-ONT communication by an FTTH system.;SOLUTION: A WDM filter 26 is provided in the CATV optical transmission device 3 and light-wavelength multiplex signals of 1.55 μm in downlink, 1.31 μm in downlink, and 1.31 μm in uplink are divided and multiplexed, and transmitted to opposite homes 8 and 9 or a center 1. This WDM filter 26 is thus provided in the CATV optical transmission device 3 to install the FTTH system additionally to the conventional HFC system.;COPYRIGHT: (C)2006,JPO&NCIPI