Free-space mid-infrared optical links using quantum cascade lasers

  • Rainer Martini
  • , Clyde Bethea
  • , Federico Capasso
  • , Claire Gmachl
  • , Roberto Paiella
  • , Edward A. Whittaker
  • , Harold Y. Hwang
  • , Deborah L. Sivco
  • , James N. Baillargeon
  • , Alfred Y. Cho

Research output: Contribution to journalConference articlepeer-review

Abstract

We present experimental results for an optical free-space high-speed link using direct modulated mid-infrared (λ = 8.1 μm) quantum cascade lasers. A stable link was realized over a distance of 200m and QPSK encoded multimedia data were transmitted and received error-free, incorporating several hundred digitally encoded multimedia channels. The reliability of the system against weather influence (fog) was experimentally compared to that of a near-infrared (λ = 0.85 μm) link. Under clear weather conditions comparable results were obtained in both links. However, a higher stability of the MIR link was clearly observed under a dense fog situation.

Original languageEnglish
Pages (from-to)20-24
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4975
DOIs
StatePublished - 2003
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Free-Space Laser Communication Technologies XV - San Jose, CA, United States
Duration: 28 Jan 200328 Jan 2003

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