An integrated optical control and communication system for free-space environments

Xian Jin; Jason E. Barg; Jonathan F. Holzman

doi:10.1117/12.837999

25 November 2009 An integrated optical control and communication system for free-space environments

Xian Jin, Jason E. Barg, Jonathan F. Holzman

Proceedings Volume 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 75060M (2009) https://doi.org/10.1117/12.837999
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

A corner-cube-based integrated retroreflective structure is introduced as a novel instrument for free-space optical (FSO) communications. The structure is composed of three independent and mutually-orthogonal silicon photodiodes (PDs) and is shown to have capabilities for real-time optimization and control by way of differential photocurrent sampling between adjacent PDs. A balanced system with minimal differential signal levels is ultimately indicative of perfect optical alignment and differential triangulation is used to obtain this optimized alignment. Such a scenario is ideallysuited to bi-directional FSO communication links with the fundamental requirements for optical retroreflection, detection, and modulation. Both active downlink and passive uplink FSO communications are demonstrated.

Citation Download Citation

Xian Jin, Jason E. Barg, and Jonathan F. Holzman "An integrated optical control and communication system for free-space environments", Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 75060M (25 November 2009); https://doi.org/10.1117/12.837999

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