只要输入信号落在检测器的频率范围内，则功率计就能给出准确的的功率。
If the input signal is anywhere in the frequency range of the detector, the meter will make a valid power measurement.
为了在变化的输入光电平上保持输出信号电平恒定，用于检测光接收机的输出功率电平的设备和方法。
An apparatus and method for detecting an output power level of an optical receiver, in order to hold output signal levels constant over changing input optical levels.
介绍一种紧凑的、能以较低输入光功率工作的光学双稳器件，由光电检测器、光纤定向耦合器和半导体激光二极管组合而成的。
A compact, low input power optical bistable device, combined with photodetector and optical fiber directional coupler and semiconductor laser diode, was presented.
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