FM-MRR analog audio system

J. L. Murphy; G. C. Gilbreath; W. S. Rabinovich; M. M. Sepantaie; P. G. Goetz

doi:10.1117/12.639991

12 September 2005 FM-MRR analog audio system

J. L. Murphy, G. C. Gilbreath, W. S. Rabinovich, M. M. Sepantaie, P. G. Goetz

Proceedings Volume 5892, Free-Space Laser Communications V; 58921X (2005) https://doi.org/10.1117/12.639991
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

In this work, we describe a hybrid free-space infrared communications link that supports audio transmission. The technique combines conventional frequency modulation (FM) techniques with optical amplitude modulation (AM) with a Multiple Quantum Well (MQW) Modulating Retroreflector (MRR) technology. The method has produced a robust, low power system capable of transmitting high quality audio information over a free space infrared link extending to multiple kilometers, depending on the characteristics of the Transmit/Receiver (interrogator) and the sensor/ MRR unit at the data source.

Citation Download Citation

J. L. Murphy, G. C. Gilbreath, W. S. Rabinovich, M. M. Sepantaie, and P. G. Goetz "FM-MRR analog audio system", Proc. SPIE 5892, Free-Space Laser Communications V, 58921X (12 September 2005); https://doi.org/10.1117/12.639991

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