本文介绍以 LED 作光源在光缆中传输电视模拟信号的系统设计和装置。模拟信号的光传输系统,结构简单,易于实现,在电视、电话及其它信号的传输中有着广泛的应用前景,文中计算了基带传输系统中信道的信噪比,分析了对于 LED 的非线性所作的箝位、微分增益和微分相位的补偿,并叙述了试验系统和测试结果。 This article describes the LED as a light source in the cable analog television signal transmission system design and installation. The analog signal optical transmission system has a simple structure and is easy to implement. It has wide application prospects in the transmission of television, telephone and other signals. The signal-to-noise ratio of the channel in the baseband transmission system is calculated and the nonlinearity of the LED is analyzed The clamp, differential gain and differential phase compensation, and describes the test system and test results.