光学接收电路、光学接收元件及光学传输系统;OPTICAL RECEPTION CIRCUIT, OPTICAL RECEPTION DEVICE, AND OPTICAL TRANSMISSION SYSTEM

摘要

将为一经光电转换之光学信号之一单端电流信号输入至一电流电压转换单元中。该电流电压转换单元将该单端电流信号转换成一单端电压信号且自一输出端子输出该经转换之信号。;一放大器单元之一输入端子连接至该电流电压转换单元之该输出端子。该放大器单元将该单端电压信号放大至预先设定之预定振幅且自一输出端子输出该经放大之信号。接着，一差分转换单元之一输入端子连接至该放大器单元之该输出端子。该差分转换单元输出一差分电压信号，该差分电压信号系在该放大器单元中放大之一差分单端电压信号。例如，可将本发明之技术应用于一光学传输系统。;An input terminal of an amplifier unit is connected to the output terminal of the current-voltage conversion unit. The amplifier unit amplifies the single-end voltage signal to predetermined amplitude set in advance and outputs the amplified signal from an output terminal. Then, an input terminal of a differential conversion unit is connected to the output terminal of the amplifier unit. The differential conversion unit outputs a differential voltage signal which is a differentiated single-end voltage signal amplified in the amplifier unit. The present technique can be applied, for example, to an optical transmission system.