| 摘要 |
<p>The system of the invention, comprising: - at least one wavelength division multiplexed passive optical network (WDM- PON) with a head-end optical line terminal (OLT) termed as WDM-PON OLT, arranged to a remote node (RN); and - a plurality of optical network units (ONUs), further comprising a: - at least one primary passive assembly installed in a manhole/handhole, adapted to select a WDM downstream optical band and/or a seed signal, to receive a WDM upstream optical band with data to and from a group of said plurality of ONUs, and to let a plurality of other group of signals to be bidirectionally transmitted through a primary single fibre bus, and -at least one secondary passive assembly remotely installed in a manhole/handhole, adapted to demultiplex and multiplex a downstream and/or a seed signal and an upstream band, and provided by a remote primary assembly to which it is connected through a single fibre, to deliver a single pair of wavelengths to each one of said plurality of ONUs of the group.</p> |
