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APD直接检测接收器OEIC在射击噪声量子极限以上运行14.1dB

Simon Michael Laube, Christoph Gasser, Kerstin Schneider-Hornstein

|November 11, 2025

概括

本研究介绍了一种使用雪崩光二极管 (APD) 的高灵敏光电子集成电路接收器. 该APD接收器表现出卓越的性能,达到-56.6 dBm的灵敏度,显著超过传统PIN光二极管接收器.

科学领域:

光电学是指光电子产品.
集成电路设计集成电路设计
光子学是一个光子学.

背景情况:

直接检测接收器对于光通信系统至关重要.
雪崩光二极管 (APD) 与PIN光二极管相比,具有提高灵敏性的潜力.
高压CMOS技术可以集成敏感的光探测器.

研究的目的:

介绍一款新型光电子集成电路 (OEIC) 接收器,采用一个点阴极雪崩光二极管 (APD).
为了评估和比较基于APD的接收器与参考PIN光二极管接收器的灵敏度.
为了评估APD接收器的性能,根据其接近射击噪声量子极限的情况进行评估.

主要方法:

在相同的180nm高压CMOS晶圆上集成点阴极APD和PIN光二极管.
两种光二极管接收器都使用相同的整合和丢弃源-追随器前端.
在642 nm波长,100 Mb/s比特率和80% RZ OOK调制下对接收器灵敏度的实验性表征.

主要成果:

该APD接收器实现了-56.6 dBm的灵敏度,位误差率 (BER) 为0.002.
这种灵敏度距离射击噪声量子极限为14.1dB,相当于平均每位71光子.
在APD接收器与PIN接收器相比,观察到最低4dB的正常化灵敏度改善.

结论:

开发的APD接收器OEIC显示了适合先进光通信的高灵敏度.
在180nm高压CMOS中集成是实现敏感光探测器电路的有效方法.
APD接收器在PIN接收器上显示了显著的性能优势,接近量子有限检测.

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