A high-speed modulated retro-reflector communication link with a transmissive modulator in a cat's eye optics arrangement

Johan Öhgren; Fredrik Kullander; Lars Sjöqvist; Kun Wang; Qin Wang; Stéphane Junique; Susanne Almqvist; Bertrand Noharet

doi:10.1117/12.737959

5 October 2007 A high-speed modulated retro-reflector communication link with a transmissive modulator in a cat's eye optics arrangement

Johan Öhgren, Fredrik Kullander, Lars Sjöqvist, Kun Wang, Qin Wang, Stéphane Junique, Susanne Almqvist, Bertrand Noharet

Author Affiliations +

Proceedings Volume 6736, Unmanned/Unattended Sensors and Sensor Networks IV; 673619 (2007) https://doi.org/10.1117/12.737959
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

An optical communication link with a modulated retro-reflector in a cat's eye optics arrangement has been evaluated. A transmissive multiple quantum well modulator with a modulation bandwidth in excess of 10 MHz was placed in a wide field-of-view cat's eye optic system. A laser transceiver with one line and one broadband source around 1550 nm was used to interrogate the modulated retro-reflector and detect the reflected and modulated signal. Multi-level digital encoding was evaluated as a way to increase the information transfer rate in conditions with relatively high signal-to-noise ratio. The links were evaluated in indoor as well as outdoor conditions.

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Johan Öhgren, Fredrik Kullander, Lars Sjöqvist, Kun Wang, Qin Wang, Stéphane Junique, Susanne Almqvist, and Bertrand Noharet "A high-speed modulated retro-reflector communication link with a transmissive modulator in a cat's eye optics arrangement", Proc. SPIE 6736, Unmanned/Unattended Sensors and Sensor Networks IV, 673619 (5 October 2007); https://doi.org/10.1117/12.737959

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