Coherent optical transmission experiment using FSK modulation and heterodyne detection scheme

FSK/Heterodyne 변복조 방식에 의한 코히런트 광송수신 실험

A basic coherent optical transmission was demonstrated using FSK modulation and heterodyne detection scheme. Optical frequency of DFB LD light source at the transmitter side was stabilized with Fabry Perot etalon and bias feedback circuit. A tunable external cavity LD was used as a local oscillator at the receiver. Heterodyned output signal at IF frequency of 2GHz was measured and discussed.