A 28-nm CMOS EML Driver for 50G-PON Applications
Targeting the low-cost demands of 50G PON infrastructure, a 28-nm CMOS EML driver is presented. A novel DC-guarded-stack (DG-Stack) output stage is proposed to solve the inconsistency between low and high frequency steady state for improved robustness. An overlapped concentric T-Coil (OC-T-Coil) is designed to enhance bandwidth with half the area. The laser and SOA bias circuits are also integrated to reduce system cost. With low power consumption of 373 mW in a compact 0.586-mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> die area, this design achieves a 50-Gbps NRZ modulation with 2-Vpp single-ended output swing and 7-dB extinction ratio, delivering >11-dBm average launch power.
Authors
- Donghe Tu (ORCID: https://orcid.org/0000-0001-6272-079X)
- Li Geng (ORCID: https://orcid.org/0000-0003-4002-9281)
- Yifei Xia (ORCID: https://orcid.org/0009-0008-9637-6710)
- Ruixuan Yang (ORCID: https://orcid.org/0009-0001-0049-2645)
- Dan Li (ORCID: https://orcid.org/0000-0003-0721-3167)
- Zhiyong Li (ORCID: https://orcid.org/0000-0003-3106-4333)
- Cong Li (ORCID: https://orcid.org/0000-0003-4420-8623)
- Y. Dang
Institutions
- Chinese Academy of Sciences (CN)
- State Key Laboratory on Integrated Optoelectronics (CN)
- Institute of Semiconductors (CN)
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- IEEE Photonics Technology Letters
- Published
- 2025-06-24
- DOI
- https://doi.org/10.1109/lpt.2025.3582785
- Citations
- 1
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China