Free-space midinfrared optical links using quantum cascade lasers

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

doi:10.1117/12.478934

3 July 2003 Free-space midinfrared optical links using quantum cascade lasers

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

Author Affiliations +

Proceedings Volume 4975, Free-Space Laser Communication Technologies XV; (2003) https://doi.org/10.1117/12.478934
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

Abstract

We present experimental results for an optical free-space high-speed link using direct modulated mid-infrared (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 (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.

Citation Download Citation

Rainer Martini, Clyde G. Bethea, Federico Capasso, Claire F. Gmachl, Roberto Paiella, Edward A. Whittaker, Harold Y. Hwang, Deborah L. Sivco, James N. Baillargeon, and Alfred Y. Cho "Free-space midinfrared optical links using quantum cascade lasers", Proc. SPIE 4975, Free-Space Laser Communication Technologies XV, (3 July 2003); https://doi.org/10.1117/12.478934

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