A 10 Gb/s/pin Single-Ended Transmitter With Reflection-Aided Duobinary Modulation for Dual-Rank Mobile Memory Interfaces

Jeong, Yong-Un; Choi, Sungphil; Chae, Joo-Hyung; Yun, Jaekwang; Jeong, Shin-Hyun; Kim, Suhwan

doi:10.1109/tcsi.2021.3123753

Cited by 3 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1. The precoder ensures that the incoming data at the receiver side depends only on the current bit (and not simultaneously on the previous bit as well), thus preventing the propagation of bit errors within the duobinary system and reducing the complexity of the receiver design [17] [18]. As shown in Fig.…”

Section: Circuit Designmentioning

confidence: 99%

A High-Speed 130-nm SiGe BiCMOS Integrated Duobinary Driver for Data Rate Capacity Enhancement in VCSEL-Based Optical Links

Giuglea,

Belfiore,

Protze

et al. 2024

IEEE Access

View full text Add to dashboard Cite

Circumventing the data rate bottleneck due to the bandwidth limitation of optical devices is an imperative for today's fiber-optic communication systems. This paper investigates a two-stage laser driver consisting of a precoder and an encoder stage, capable of applying duobinary modulation to a bandwidth-limited verticalcavity surface-emitting laser (VCSEL). Thus, the transmitter's data rate capacity per cycle of bandwidth is significantly increased. By employing a cross-coupled architecture for the precoder stage, the output data rate of the driver is doubled with respect to the input data rate. Electro-optical measurements of the driver bonded to a VCSEL with inherent bandwidth of 20 GHz yielded duobinary eye diagrams at data rates up to 56 Gb/s, which represents a significant speed enhancement with regard to the laser's own bandwidth. To the best of the authors' knowledge, this is the fastest integrated duobinary VCSEL driver reported so far, as well as the first chip-to-chip integration of such an electrical driver with a VCSEL device.

show abstract

Section: Circuit Designmentioning

confidence: 99%