Tu2J: Co-packaged Optics and Die-to-Die Interfaces

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Tue 9 Jun | 10:10 - 11:50
255
Zeshan Ahmad
Coherent Corp
Bahar Farahani
Cisco Systems, Inc.
Emerging AI workloads demand an exponential increase in XPU and switch scale-up interconnect bandwidth, alongside high-density die-to-die interfaces. This session explores novel Co-Packaged Optics (CPO) link architectures designed to meet these challenges. Presentations will highlight the use of Micro-Ring Modulators (MRM) and the enhancement of bandwidth through ultra-low-power coherent optics. Key technical deep-dives include UCIe-inspired clock-forwarding and the development of compact, power-efficient building blocks, featuring innovative Phase Interpolator (PI) designs.
10:10 - 10:30
Tu2J-1 A 1.49 pJ/b 4-Channel 256-Gb/s MRM-Based Coherent Co-Packaged Optics with Linear Carrier Phase Recovery
ABSTRACT
Pengyu Zeng, Marziyeh Rezaei, Daniel Sturm, Asha Nayak, Hongyong Li, Sajjad Moazeni
Univ. of Washington, Univ. of Washington, Univ. of Washington, Univ. of Washington, Univ. of Washington, Univ. of Washington
10:30 - 10:50
Tu2J-2 A 200Gbps 0.67pJ/bit Transceiver Front-end for silicon-photonic with group delay and nonlinear adjustment in 28nm CMOS
ABSTRACT
Yihao Yang, Shenlei Bao, Chao Cheng, Binhao Wang
State Key Laboratory of Ultrafast Optical Science and Technology, Xi’an Institute of Optics and Prec, State Key Laboratory of Ultrafast Optical Science and Technology, Xi’an Institute of Optics and Prec, State Key Laboratory of Ultrafast Optical Science and Technology, Xi’an Institute of Optics and Prec, State Key Laboratory of Ultrafast Optical Science and Technology, Xi’an Institute of Optics and Prec
10:50 - 11:10
Tu2J-3 An 8×64 Gb/s PAM-4 Retimed Optical Receiver with Forwarded Clock for UCIe Compliant Optical I/O in 28-nm CMOS
ABSTRACT
Yukun He, Junhao Zhao, Zhouchi Duan, Puxi Tan, Yucong Li, Yujie Zeng, Zhihao Peng, Huanfa Sun, Shangjie Wei, Chenming Zhang, Dong Wang, Shiming Wu, Jian Luan, Hao Luo, Xiaoyan Gui
Xi'an Jiaotong Univ., Xi'an Jiaotong Univ., Xi’an Jiaotong University, Xi’an Jiaotong University, Xi’an Jiaotong University, Xi’an Jiaotong University, Xi’an Jiaotong University, Xi’an Jiaotong University, Xi’an Jiaotong University, Sanechips Technology Co., Ltd., Shenzhen, China, Sanechips Technology Co., Ltd., Shenzhen, China, Sanechips Technology Co., Ltd., Shenzhen, China, Sanechips Technology Co., Ltd., Shenzhen, China, Sanechips Technology Co., Ltd., Shenzhen, China, Xi'an Jiaotong Univ.
11:10 - 11:30
Tu2J-4 A 3.5-to-14GHz, Less-Than-0.81LSB-INLpp, 7b Adaptive Phase Interpolator with Segment-Squeeze INL Calibration Algorithm for Die-to-Die Interfaces
ABSTRACT
Shiju Li, Yihan Chen, Wei Deng, Nan QI, Haikun Jia, Liyuan Liu, Baoyong Chi
Tsinghua Univ., Institute of Semiconductors, CAS, Tsinghua Univ., Chinese Academy of Sciences, Tsinghua Univ., Institute of Semiconductors, CAS, Tsinghua Univ.