Patch cord polarity detector

A patch cord polarity detector for detecting polarity of a patch cord that comprises a first connector having a plurality of first channels, a plurality of optical fibers installed at the first connector such that one ends of the optical fibers respectively communicate with the first channels, and a second connector installed at the other ends of the optical fibers and having a plurality of second channels respectively communicating with the other ends of the optical fibers,

• wherein the patch cord polarity detector comprises:
• a signal input unit that is connected to the first connector of the patch cord, and that sequentially inputs an optical signal into the first channels of the first connector;
• a signal detector that is connected to the second connector of the patch cord, and that detects the second channel outputting the optical signal that passed through the optical fiber, of the second channels of the second connector;
• and
• an information provider that provides discernment information for discerning the polarity of the patch cord, based on detection information being provided through the signal detector,
• the signal input unit comprising a first connection terminal for connecting the first connector of the patch cord;
• a light source for generating the optical signal to be input into the first connection terminal;
• and a signal outputter provided between the light source and the first connection terminal, to sequentially input the optical signal generated from the light source, into the first channels of the first connector connected to the first connection terminal,
• and the signal outputter comprising:
• an inputter connected to the light source for inputting the input optical signal from the light source;
• an optical distributer connected to the inputter, and provided with a plurality of output waveguides such that the input optical signal input through the inputter can be spectrally output as a plurality of unit optical signals, but with output ends of the output waveguides respectively connected to the first channels of the first connector connected to the first connection terminal;
• a plurality of optical attenuators respectively installed at the output waveguides, to block or pass the unit optical signal input into the output waveguide, by heat;
• and
• a controller that controls the optical attenuators.