Conventional optical receivers are mostly optimized for single data rate. In this work, after examining conventional optical front-ends, we present the low-noise tunable front-end (LNTF) topology, which is able to achieve optimized noise performance at multiple data rates. In addition, colored noise optimization techniques including capacitive noise scaling and CMOS inverter based transimpedance amplifier (TIA) are also studied, which together with the LNTF form a low-noise design methodology for silicon photonics based CMOS optical receiver. Employing these techniques, the implemented 3D hybrid-integrated silicon photonics receiver achieves excellent noise performance of 0.91 μArms and 0.5 μArms input-referred noise current at 25 and 10 Gb/s, respectively, which enables high sensitivity of −14.6 dBm and −16.5 dBm OMA at BER = 10−12, correspondingly.

中文翻译：

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多速率低噪声光接收器前端

传统的光接收器大多针对单数据速率进行了优化。在这项工作中，在检查了传统的光学前端之后，我们提出了低噪声可调谐前端 (LNTF) 拓扑，它能够在多个数据速率下实现优化的噪声性能。此外，还研究了包括电容噪声缩放和基于 CMOS 逆变器的跨阻放大器 (TIA) 在内的有色噪声优化技术，这些技术与 LNTF 一起构成了基于硅光子学的 CMOS 光接收器的低噪声设计方法。采用这些技术，实现的 3D 混合集成硅光子接收器分别在 25 和 10 Gb/s 下实现了 0.91 μArms 和 0.5 μArms 输入参考噪声电流的出色噪声性能，从而实现了 -14.6 dBm 和 -16.5 dBm 的高灵敏度BER = 10−12 时的 OMA，