OPTICAL TRANSMISSION NETWORK SYSTEM INCLUDING MICRO PHOTONIC BANDPASS FILTER REDUCTING OPTICAL BEATING INTERFERENCE

摘要

Disclosed is an optical transmission network system. According to one embodiment of the present invention, the optical transmission network system comprises: an optical transmission unit generating a first optical signal based on a clipping tone signal of a first frequency; an optical recirculation delay line repeatedly outputting the first optical signal at a cycle in accordance with the length of an optical path to generate a second optical signal; and an optical reception unit converting components of a second frequency interval of the second optical signal into electrical signals. A micro photonic bandpass filter function can be performed by the optical transmission unit, the optical recirculation delay line, and the optical reception unit.