Angled launch techniques using vertical cavity surface emitting lasers for gigabit data links

M. Webster, I. H. White, R. V. Penty

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report experimental evidence for bandwidth collapse occurring in links employing vertical cavity lasers under conventional launching conditions. Small launch misalignments are found to result in link bandwidths up to 40% below the modal bandwidth of the fibre with eye closure penalties of 4 dB. This effect can cause gigabit/s link lengths to be limited to less than previously thought. By implementing restricted mode launches using angled launch techniques we show that significant performance improvements are achievable. In particular, by adopting an angle of 8° between the launch axis and the fibre end face we show that the transmission bandwidth is 100% greater than the 550 MHz.km fibre bandwidth for a wide range of launch misalignments.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Pages159-171
Number of pages13
ISBN (Print)0819430978
Publication statusPublished - 1 Jan 1999
EventProceedings of the 1999 Vertical-Cavity Surface-Emitting Lasers III - San Jose, CA, USA
Duration: 25 Jan 199926 Jan 1999

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3627
ISSN (Print)0277-786X

Conference

ConferenceProceedings of the 1999 Vertical-Cavity Surface-Emitting Lasers III
CitySan Jose, CA, USA
Period25/01/9926/01/99

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Webster, M., White, I. H., & Penty, R. V. (1999). Angled launch techniques using vertical cavity surface emitting lasers for gigabit data links. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 159-171). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3627). SPIE.