Feedforward Optical Modulation Technology and its Application to Simultaneous Multi-channel BS Television Signal Modulation System

Abstract

This paper presents we added a feedforward circuit to improve the signal quality by adding a feedforward circuit to the third-order distortion caused by increasing the modulation index of the LiNbO₃(LN) optical modulator, and described its effect. Furthermore, we applied this optical modulator distortion reduction experimental device using this feedforward to a 5-channel simultaneous BS television information signal modulation system, and described its characteristics.