← 返回 JSSC 论文列表JSSC 2011第4期RF & Wireless0.18μm
A 10-Gbs OEIC with Meshed Spatially-Modulated Photo Detector in 018- m CMOS Tech
一款采用0.18微米CMOS工艺的10Gb/s全集成光接收机，包含新型网状空间调制光电探测器和高增益跨阻放大器。
6.9GHz带宽/29mA/W响应度/-6dBm灵敏度@10-12 BER
光电子集成电路空间调制光电探测器跨阻放大器CMOS光接收机10Gb/s
▸创新点1：网状空间调制光电探测器(SMPD)采用创新的网状结构设计，在0.18微米CMOS工艺下实现6.9 GHz带宽和29 mA/W响应度，通过14.2 V反向偏压优化性能，显著提升高频光信号检测能力
▸创新点2：嵌套反馈与并联峰化高增益跨阻放大器(TIA)结合嵌套反馈结构和并联峰化技术，在1.8V供电下实现低噪声操作，有效补偿片上光电探测器低响应度问题，支持10 Gb/s高速数据传输
▸创新点3：单芯片集成光接收机将SMPD、TIA和后置限幅放大器集成于0.95mm×0.8mm芯片，实现25kΩ转换增益和-6dBm光灵敏度@10-12 BER，系统级优化解决光电混合集成挑战
▸创新点4：采用018微米标准CMOS工艺实现OEIC，突破传统III-V族材料限制，通过电路创新（如网格PD结构和复合反馈TIA）在低成本工艺达成10Gb/s性能
Abstract
This paper describes the design of a 10-Gb/s
fully integrated CMOS optical receiver, which consists of a
novel spatially-modulated photo detector (SMPD), a low-noise
trans-impedance ampli fier (TIA), and a post-limiting ampli fier
on a single chip. The bandwidth of proposed meshed SMPD
can be boosted up to 6.9 GHz under a reverse-biased voltage
of 14.2 V. The measured responsivity of the meshed SMPD is
29 mA/W as illuminated by 850-nm light source. To compensate
the relatively low responsivity of