← 返回 JSSC 论文列表JSSC 2007第4期RF & Wireless0.13μm CMOSCDREqualizer
A Fully Integrated 10-Gb/s Receiver With Adaptive Optical Dispersion Equalizer in 0.13-/22m CMOS Afshin Momtaz, David Chung, Namik Kocaman, Jun Cao, Mario Caresosa, Bo Zhang, and
一款集成自适应光学色散均衡器的10Gb/s接收器芯片，适用于长距离光纤通信。
10 Gb/s, 950 mW, 200 km单模光纤无差错运行
光纤通信自适应均衡器时钟数据恢复判决反馈均衡器色散补偿
▸自适应光学色散均衡器：采用连续时间滤波器和两抽头判决反馈均衡器（DFE）的组合方案，有效补偿长距离光纤传输中的色散和偏振模色散，实现200公里单模光纤无误码传输，显著提升系统容限（技术方法创新）
▸连续时间滤波器与两抽头判决反馈均衡器：通过模拟域连续时间滤波降低高频噪声，结合数字自适应DFE精确消除码间干扰，在140公里光纤下仅产生2dB光信噪比 penalty（电路架构创新）
▸自动阈值和相位调整嵌入CDR：在时钟数据恢复模块中集成自适应阈值检测和相位校准功能，可容忍100ps差分群时延，提升系统对动态信道变化的鲁棒性（系统级创新）
▸混合信号均衡方案：模拟均衡器与数字自适应算法协同工作，在0.13μm CMOS工艺下实现10Gb/s速率时总功耗仅950mW，达成能效与性能平衡（跨域设计创新）
Abstract
A 10 Gb/s receiver, containing an adaptive equalizer, a clock and data recovery, and a de-multiplexer, is implemented in 0.13- m CMOS. The chip is intended for long-haul optical fiber links where chromatic and polarization mode dispersions are reach-limiting factors. The equalization is performed by a continuous time filter and a two-tap decision feedback equalizer while automatic threshold and phase adjustments are embedded in the CDR. Use of an analog equalizer with digital adaptation garners total power dissipation of 950 mw. Error-free operation over 200 km of single mode fiber is demonstrated. With 140 km of single mode fiber, optical signal to noise ratio penalty is only 2 dB. Differential group delay of 100 ps can also be tolerated.