Optical signal transmitter using the as well as pre-distortion circuit, and distortion generation circuit and optical signal transmission system

摘要

Even in case of a frequency modulated by FM batch conversion circuit input electrical signal over a wide frequency range, the present invention is aimed at providing a distortion generation circuit for generating a substantially equal distortion and distortion of the FM batch conversion circuit to. Another object of the present invention that the pre-distortion circuit for compensating for distortion of the FM batch conversion circuit using the distortion generating circuit, an optical signal transmitter with less distortion, and to provide an optical signal transmission system. FM batch conversion circuit that outputs the frequency modulation distribution circuit for distributing the electrical signals of the two electrical signals to be input (21), the output of one of the distribution circuit distortion generating circuit of the present invention, and (12), amplitude delay adjustment circuit FM demodulator circuit and outputs the frequency demodulation output of the FM batch conversion circuit (92), and outputs the delay adjustment and amplitude adjustment and the other output of the distribution circuit (38, 39), and a (37) combining circuit output by combining the output from the amplitude adjustment delay circuit with the output from the FM demodulation circuit.