光纤调幅有线电视外调制传输预失真补偿的理论分析及其实现(英文)

THEORETICAL ANALYSIS AND REALIZATION OF PREDISTORTION LINEARIZATION IN OPTICAL FIBER AM CATV EXTERNALLY MODULATED TRANSMISSION

在光纤调幅有线电视外调制传输中，由于所用调制器变换特性是非线性的，需要加以补偿，本文对预失真补偿进行了分析．介绍了基于热载流子二极管的具体预失真电路，该电路在50～200MHz范围可将三次谐波至少抑制到18dB。

In optical fiber AM CATV external modulating transmission,compensation is needed owingto an used modulator's nonlinear transfer characteristics. In the paper,the predistortion linearization is analysed. A concrete predistortion circuit based on hot carrier diode is presented. The circuit can suppress third harmonics at least 18dB from 50~200MHz.