BIDIRECTIONAL REACH EXTENDER AND WAVELENGTH-DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORK BASED ON BROADBAND LIGHT SOURCE

摘要

PURPOSE: A bidirectional transmission distance extension module capable of reducing the waste of power is provided to create ASE beam of upper direction light source as well as amplifying the lost signal by dividing output optical wavelength band of an optical amplifier. CONSTITUTION: A first band splitter(21) divides an optical signal for transceiving signal with a central BS(Base Station) into an UL optical signal and a DL optical signal. A second band splitter(22) divides an optical signal for transceiving signal with an optical network unit(4) into the UL optical signal and the DL optical signal. A first amplifier(23) amplifies the DL optical signal which is divided from the first band splitter. A second amplifier(24) amplifies the UL optical signal from the second band splitter.