40-Gbit/s 850-nm VCSEL-Based Full-CMOS Optical Link with Power-Data Rate Adaptivity

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributedpeer-review


An optical link based on directly modulated vertical-cavity surface-emitting laser (VCSEL) at 850-nm wavelength using commercial VCSEL and photodiode operating error-free (BER < 10∼ 12 ) at 40 Gbit/s is reported. The transmitter is implemented in a 14-nm FinFET CMOS while the receiver (RX) in 28-nm digital bulk-CMOS technologies. This is the fastest 850-nm VCSEL-based single-lane non-return-to-zero optical link with all the analog front-end components fabricated in CMOS. An energy-per-bit of 3.4 pj/bit is measured at 40 Gbit/s. At lower data rates, the band widths of the circuits can be decreased adaptively to save power. This results in 2.7 pj/bit at 20 Gbit/s. A sensitivity of -1.9 dBm optical modulation amplitude could be measured at the RX for 40 Gbit/s.


Original languageEnglish
Title of host publicationIEEE Photonics Conference (IPC)
Place of PublicationReston
PublisherIEEE Xplore
ISBN (electronic)978-1-5386-5358-6
ISBN (print)978-1-5386-5359-3
Publication statusPublished - 2018

Publication series

SeriesIEEE Photonics Conference (IPC)


Title31st Annual Conference of the IEEE Photonics Society, IPC 2018
Duration30 September - 4 October 2018
CountryUnited States of America

External IDs

researchoutputwizard legacy.publication#82449
Scopus 85058293790
ORCID /0000-0002-1851-6828/work/142256644


Research priority areas of TU Dresden


  • CMOS integrated circuits, Laser driver, Optical interconnects, Optical receiver, VCSEL

Library keywords