雪崩光电二极管
单光子雪崩二极管
可见光通信
光电探测器
二极管
噪音(视频)
光电二极管
光学
光子计数
传输(电信)
散粒噪声
雪崩二极管
光通信
计算机科学
光电子学
物理
探测器
发光二极管
电信
人工智能
图像(数学)
击穿电压
量子力学
电压
作者
Yu Mu,Chao Wang,Jiawei Ren,Yi-Jun Zhu
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2021-09-08
卷期号:60 (09)
被引量:7
标识
DOI:10.1117/1.oe.60.9.096101
摘要
Positive-intrinsic-negative diode (PIN), avalanche photodiode (APD), and single photon avalanche diode (SPAD) are commonly used optoelectronic receivers with different characteristics in practical visible light communication system. To determine the most appropriate candidate, different signal and ambient light strength in the communication scenarios should be taken into account. APD and SPAD receivers have higher sensitivities than PIN, but there are still some defects that restrain their operation performance. APD receiver may generate excessive shot noise, whereas SPAD is limited by the dead time, afterpulsing, and smaller detection area. We initially analyze the noise characteristics of PIN, APD, and SPAD receivers. SNR models are established, and the main factors affecting the performance of APD and SPAD receivers are concluded. Then, the comparison experiments of three kinds of receivers in various transmission distances are conducted, respectively. Finally, the experimental results show that: short and mid distance conditions, PIN and APD are better choices, whereas SPAD performs better in long-distance communication. In addition, if a certain intensity of ambient light is introduced, APD is still better than SPAD even in long distance.
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