| 摘要 |
PURPOSE: A light signal processing device is provided to seclude degradation of whole data providing quality according to mutual interference of unnecessary UL/DL optical signals. CONSTITUTION: An OLT(Optical Line Terminal)(140) transmits a multiplexed DL(DownLink) optical signal to an ONU(Optical Network Unit) or a WDM(Wavelength Division Multiplexing) data repeater(130). The OLT transmits demultiplexed UL(UpLink) optical signal to a signal converter(104). An optical signal repeater(120) transmits a demultiplexed DL optical signal to the ONY or the WDM data repeater. The light signal repeater transmits a multiplexed UL optical signal to the OLT.
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