Impact of Damping on 50 Gbps 4-PAM Modulation of 25G Class VCSELs
Journal article, 2017

We present an investigation into the effects of photon lifetime and the associated damping of the modulation response on 50 Gbps 4-PAM signal generation with directly modulated 25G class VCSELs. While 4-PAM benefits from higher slope efficiency and output power, it is shown that the greater impact of intensity noise and dynamic nonlinearities implies that a VCSEL with a longer photon lifetime and more damped response is needed when transitioning from existing 25 Gbps OOK to 50 Gbps 4-PAM using the 25G VCSEL technology.

interconnects

MMF

OOK

fiber-optical communication

inter-symbol interference

850 nm

IM/DD

Data communication

4-PAM

short-range

VCSEL

Author

Tamas Lengyel

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Krzysztof Szczerba

Emanuel Haglund

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Petter Westbergh

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Anders Larsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Journal of Lightwave Technology

0733-8724 (ISSN)

Vol. 35 19 4203-4209

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

DOI

10.1109/JLT.2017.2727549

More information

Latest update

5/2/2018 1