A 4 x 25 Gb/s Optical Transmitter Using Low-Cost 10 Gb/s VCSELs in 40-nm CMOS

被引：5

作者：

Hu, Shang ^{[1
]}

Bai, Rui ^{[2
]}

Wang, Xin ^{[2
]}

Peng, Yi ^{[2
]}

Wang, Juncheng ^{[1
]}

Xia, Tao ^{[2
]}

Ma, Jianxu ^{[2
]}

Wang, Lei ^{[2
]}

Zhang, Yuanxi ^{[2
]}

Chen, Xuefeng ^{[2
]}

Qi, Nan ^{[3
]}

Chiang, Patrick Yin ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab ASIC & Syst, Shanghai 201203, Peoples R China

[2] PhotonIC Technol Inc, Shanghai 201203, Peoples R China

[3] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Driver; clock data recovery; asymmetric-pulsed equalizer; optical transmitter; vertical-cavity surface-emitting laser (VCSEL);

D O I：

10.1109/LPT.2019.2911971

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents a 4x25 Gb/s optical transmitter in 40-nm CMOS. Low-cost vertical cavity surface-emitting lasers (VCSELs) with 10-GHz bandwidth (BW) are employed, which are then overdriven to 25 Gb/s by the proposed pre-emphasized quad-channel driver. Digitally assisted asymmetric-pulsed equalization technique is proposed to overcome the VCSEL modulation non-linearity and maximize the eye-diagram margin against the 100-GbE standard mask. The measurement results show > 30% eye-mask margin and error-free (BER < 10(-12)) optical transmission for each 25-Gb/s channel, resulting in 280-mW power dissipation per channel under 1.2-/3.3-V dual supply.

引用

页码：967 / 970

页数：4

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