CAJ | 학술논문

为了避免传统光功率计测量误差较大、测量范围较窄等缺点，文中对光功率计的测量精度及范围进行了优化设计。设计中使用 PIN 光电二极管将光电流转化为电压值，并采用 AD8304对数放大器进行对数放大，避免了使用线性放大器时显示转换误差和烦琐的对数运算。给出了光功率计的设计思路，重点讨论了 AD8304对数放大器的特性及在光功率计中的应用，并通过软件对本设计的计算精确性进行了验证。
위료피면전통광공솔계측량오차교대、측량범위교착등결점，문중대광공솔계적측량정도급범위진행료우화설계。설계중사용 PIN 광전이겁관장광전류전화위전압치，병채용 AD8304대수방대기진행대수방대，피면료사용선성방대기시현시전환오차화번쇄적대수운산。급출료광공솔계적설계사로，중점토론료 AD8304대수방대기적특성급재광공솔계중적응용，병통과연건대본설계적계산정학성진행료험증。
In order to avoid the disadvantages of the traditional Optical Power Meter Method,such as the large measuring error and the narrow measuring range,this paper is deigned to explore the measurement accuracy of the Optical Power Meter and the optimization of the measuring range.In this design,photodiode PIN is used to convert light current into voltage values.And the employment of the log-arithmic amplifier AD8304 can avert the sophisticated logarithm operation and the error by using the linear amplifier.The design thought of the Optical Power Meter is provided in this paper,which focuses on the special characteristics of the logarithmic amplifier AD8304 and the application of the Optical Power Meter.And the calculation accuracy of this design has been verified by software.