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一、前言光衰减器是一种光学无源器件,其功能是在光纤传输线路中对光功率进行预定量的衰减,其作用是在光纤通信系统或光纤传输装置中代替相应长度的光纤或光缆用来调整和测量系统(或装置)的性能参数。光衰减器按衰减量的变化方式分类,可分为固定式、阶跃可变式和连续可变式三种类型。
I. Introduction Optical attenuator is an optical passive device whose function is to attenuate a predetermined amount of optical power in an optical fiber transmission line. Its function is to replace the corresponding length of optical fiber or optical cable in an optical fiber communication system or an optical fiber transmission device Used to adjust and measure the system (or device) performance parameters. Optical attenuators by attenuation changes in the way of classification, can be divided into fixed, step variable and continuous variable three types.