| 摘要 |
PROBLEM TO BE SOLVED: To suppress side-to-side crosstalk by evaluating an input signal to be modulated on the side of a transmitter or receiver corresponding to the jitter impressed to the carrier frequency of a frequency deviation comb assembly or jitter in the frequency gap of frequency deviation comb assembly. SOLUTION: A signal 1 is inputted through an optical filter to a microwave oscillator 7, and the optical output of an optical filter 3 is inputted through a photodetector 4 to an amplifier 5. The output signal of the amplifier 5 is transmitted to a microwave detector 6, a sub carrier signal is converted again and electric output data can be utilized again. The modulation of the optical filter 3 is performed by an optical phase modulator. The frequency deviation comb assembly for transfer depends on the jitter. Thus, the optical transmission signal is affected and an electric signal can be evaluated on the side of reception while using the microwave detector 6. Therefore, the carrier frequency of the frequency deviation comb assembly is modulated or spectrum range of a transmitter filter is modulated on the side of a transmitter and the jitter can be prepared. |
