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一、原理FP-3型光功率计是应用光-电转换技术来实现光功率测量的,也就是使光辐射强度的变化线性地转换成电流信号的变化.实现这种特性在要求不太严格的情况下,可供选择的器件种类繁多,相应的光电探测器显然要求各自的前置电子电路,要满足阻抗匹配,使其输出满足线性要求.对于硅光电二极管(包括硅光电池,PIN管)而言,采用低阻“短路负载”是合适的.图1表示光敏元件在光辐照下产生光生电流,前置放
First, the principle FP-3-type optical power meter is the application of optical - electrical conversion technology to achieve optical power measurement, that is, the light intensity of the linear changes in the change of the current signal to achieve this property is less stringent requirements , There are a wide range of devices to choose from, and the corresponding photodetectors clearly require their own front-end electronics to meet the impedance matching requirements so that their outputs meet the linear requirements. For silicon photodiodes (including silicon cells, PIN tubes) , The use of low resistance “short circuit load ” is suitable Figure 1 shows the light-sensitive components in the light irradiation generated by photovoltaic current, pre placed