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Proceedings Paper

InGaAs multiple quantum well modulating retro-reflector for free-space optical communications
Author(s): William S. Rabinovich; G. Charmaine Gilbreath; Peter G. Goetz; Rita Mahon; D. Scott Katzer; Kiki Ikossi-Anastasiou; Steven C. Binari; Timothy J. Meehan; Mena Ferraro; Ilene Sokolsky; John A. Vasquez; Michael J. Vilcheck
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Paper Abstract

Modulating retro-reflectors provide means for free space optical communication without the need for a laser, telescope or pointer tracker on one end of the link. These systems work by coupling a retro-reflector with an electro- optic shutter. The modulating retro-reflector is then interrogated by a cw laser beam from a conventional optical communications system and returns a modulated signal beam to the interrogator. Over the last few years the Naval Research Laboratory has developed modulating retro-reflector based on corner cubes and large area Transmissive InGaAs multiple quantum well modulators. These devices can allow optical links at speeds up to about 10 Mbps. We will discuss the critical performance characteristics of such systems including modulating rate, power consumption, optical contrast ratio and operating wavelength. In addition a new modulating retro-reflector architecture based upon cat s eye retroreflectors will be discussed. This architecture has the possibility for data rates of hundreds of megabits per second at power consumptions below 100 mW.

Paper Details

Date Published: 22 January 2002
PDF: 12 pages
Proc. SPIE 4489, Free-Space Laser Communication and Laser Imaging, (22 January 2002); doi: 10.1117/12.453228
Show Author Affiliations
William S. Rabinovich, Naval Research Lab. (United States)
G. Charmaine Gilbreath, Naval Research Lab. (United States)
Peter G. Goetz, Naval Research Lab. (United States)
Rita Mahon, Naval Research Lab. (United States)
D. Scott Katzer, Naval Research Lab. (United States)
Kiki Ikossi-Anastasiou, Naval Research Lab. (United States)
Steven C. Binari, Naval Research Lab. (United States)
Timothy J. Meehan, Naval Research Lab. (United States)
Mena Ferraro, Naval Research Lab. (United States)
Ilene Sokolsky, Naval Research Lab. (United States)
John A. Vasquez, Naval Research Lab. (United States)
Michael J. Vilcheck, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 4489:
Free-Space Laser Communication and Laser Imaging
David G. Voelz; Jennifer C. Ricklin, Editor(s)

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