光电二极管（Photo-Diode）和普通二极管一样，也是由一个PN结组成的半导体器件，也具有单方向导电特性。但在电路中它不是作整流元件，而是把光信号转换成电信号的光电传感器件。
n. photodiode
雪崩光电二极管 [电子] avalanche photodiode ; APD ; PSAPD ; InGaAs APD
硅光电二极管 [电子] silicon photodiode ; [电子] silicon photoelectric diode ; SPD ; Si photodiode
充气光电二极管 [电子] photion ; gas diode phototube
光电二极管阵列检测器 photodiode array detector, DAD ; Photodiode array monitor
稼光电二极管 GPD
光电二极管阵列 photodiode array ; SSPA ; PDAD ; Self Scanned Photodiode Array
异质结光电二极管 heterojunction photodiode
分布发射光电二极管 distributed emission photodiode
肖特基势垒光电二极管 schottky barrier photodiode
该光电二极管安放在一个电屏蔽的暗箱中。
The photodiode is placed in an electrically shielded dark box.
该通信系统还受背景光、雪崩光电二极管（APD）增益和调制消光比等因素的影响。
The results also show that the performance of this communication system can be affected by background optical, APD gain and modulation extinction ratio.
考虑了工作信号躁声，感光光电二极管深嵌入硅片中，与芯片表面上产生噪声的元件相隔离。
Operating signal noise was also considered, and the sensor photodiodes were deeply embedded in silicon to isolate them from noise-causing elements on the chip surface.
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