| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a passive optical network including a means capable of inexpensively monitoring networks in real time in a point-to-multi-point connection method passive optical network. <P>SOLUTION: The passive optical network includes: an optical line terminal (OLT) comprising an optical transceiver for generating a downstream optical signal and an optical monitoring signal and for detecting an upstream optical signal; a plurality of optical network units (ONUs) for detecting the downstream optical signal, reflecting the optical monitoring signal to the OLT, and transmitting a data-modulated upstream optical signal in a designated time slot; and an optical fiber for connecting the ONUs and the OLT. The optical monitoring signal to be used for an optical time domain reflectometer (OTDR) is generated using a transceiver for generating an optical signal, thereby facilitating network management and monitoring and providing a network in more simplified configuration. As a result, there are a lot of advantages in costs, time and man-power management. <P>COPYRIGHT: (C)2007,JPO&INPIT |
