求翻译：用半导体发光二级管将电信号转变成光信号，通过传输光纤传递到光接收机，并通过其光电转换电路将光信号转换成电信号，再经过功放电路将电信号放大，测量偏置电流值和光功率，并手动完成数据的分析及数据的处理。是什么意思？

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Shines two levels of tubes with the semiconductor to transform the electrical signal the light signal, through transmits the optical fiber to transmit the light receiver, and transforms through its photoelectricity switching circuit the light signal the electrical signal, again puts the electric cir

Semiconductor light-emitting diode electric signals into optical signals, passed through the fibre optical receiver and its photoelectric conversion circuit converting optical signals into electrical signals, and then after power amplifier circuit for signal amplification, and optical power measurem

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