OPTICAL LINE FAULT DETECTION DEVICE AND OPTICAL LINE FAULT DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to collectively perform a fault detection test on all bands, regardless of a configuration of a WDN-PON system in an associated optical line fault detection device.;SOLUTION: The optical line fault detection device includes: wide band pulse generation means which generates a wide band optical pulse including all wavelengths of signal light to be used for the WDM-PON system; a first wavelength selector which outputs wide band inspection light removing a wavelength component corresponding to the wavelength of the signal light from the wide band optical pulse; an optical divider which leads the wide band inspection light to the WDM-PON system; a second wavelength selector which removes the signal light from return light from the WDM-PON system including the wide band inspection light and the signal light and outputs resultant light as return inspection light; and a return inspection light processing part which converts the return inspection light into an electric signal and compares the electric signal with a reference electric signal.;COPYRIGHT: (C)2015,JPO&INPIT