An Energy Efficient 56 Gbps PAM-4 VCSEL Transmitter Enabled by a 100 Gbps Driver in 0.25 µm InP DHBT Technology
Artikel i vetenskaplig tidskrift, 2016

Datacenters demand higher speed VCSEL-based optical interconnects at low power consumption. As a potential technology enabler, this paper presents a wide bandwidth and energy efficient multilevel PAM VCSEL driver implemented in an InP 0.25 μm double heterojunction bipolar transistor (DHBT) technology. The operational bandwidth of the driver is verified and error-free electrical data transmission up to 56 Gbps PAM-2 and 100 Gbps PAM-4 is demonstrated at a driver energy consumption less than 2 pJ/bit. The driver is integrated and tested with an in-house fabricated 850 nm VCSEL. Error-free 56 Gbps PAM-4 optical transmission at a transmitter energy consumption of 3.7 pJ/bit is demonstrated without equalization. This is the highest data rate reported for an integrated PAM-4 modulated VCSEL transmitter, while being the most energy efficient above 40 Gbps operation. Moreover, the VCSEL driver offers a pre-emphasis feature at PAM-2 operation for improved link throughput and receiver sensitivity.

DHBT technology

pre-emphasis

OOK

PAM-2

PAM-4

VCSEL driver

100 GbE

VCSEL transmitter

short-range optical communications

InP

optical interconnects

Författare

Jingjing Chen

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Zhongxia Simon He

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Tamas Lengyel

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Krzysztof Szczerba

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Petter Westbergh

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Johan Gustavsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Herbert Zirath

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Anders Larsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Journal of Lightwave Technology

0733-8724 (ISSN)

Vol. 34 21 954-4964

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Kollberglaboratoriet

Drivkrafter

Hållbar utveckling

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/JLT.2016.2600591

Mer information

Skapat

2017-10-08