25 Gbit/s adaptive 3-tap FFE VCSEL driver in 28-nm CMOS for data center communications

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in KonferenzbandBeigetragenBegutachtung

Abstract

This paper presents the design and measurement of an adaptive 3-tap feed-forward equalizer (FFE) integrated circuit (IC) manufactured in 28-nm digital bulk CMOS technology. The driver consumes only 100 mW from a single 1.5 V supply including the vertical-cavity surface-emitting laser (VCSEL) and excluding the input matching circuitry. The 50 Ω input baluns, necessary only for the measurement, are not power optimized and consume 60 mW. The driver was assembled on a printed circuit board (PCB) with DC connections and bonded to a commercially available 7.5 GHz VCSEL diode. An error-free (BER < 10-12) optical transmission with a data rate (DR) of 25 Gbit/s was achieved. It is proven that the 3-tap FFE improves the quality of the optical eye diagram at a cost of eye amplitude. When not needed, the circuitry of the FFE can be switched off saving 22.5 mW of power.

Details

OriginalspracheEnglisch
Titel19th International Conference on Transparent Optical Networks (ICTON)
ErscheinungsortGirona
Herausgeber (Verlag)IEEE Xplore
ISBN (elektronisch)978-1-5386-0859-3
ISBN (Print)978-1-5386-0860-9, 978-1-5386-0858-6
PublikationsstatusVeröffentlicht - 2017
Peer-Review-StatusJa

Publikationsreihe

ReiheInternational Conference on Transparent Optical Networks

Konferenz

Titel19th International Conference on Transparent Optical Networks, ICTON 2017
Dauer2 - 6 Juli 2017
StadtGirona, Catalonia
LandSpanien

Externe IDs

ORCID /0000-0002-1851-6828/work/142256650

Schlagworte

Forschungsprofillinien der TU Dresden

Schlagwörter

  • adaptivity, data centre communications, driver, integrated circuit, optical interconnect, VCSEL