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1 May 1991 Novel optical-fiber-based conical scan tracking device
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Proceedings Volume 1522, Optical Space Communication II; (1991)
Event: Munich '91 (Lasers '91), 1991, Munich, Germany
A fast optical fiber based tracking detector has been developed, tested and characterized as a cmponent for a coherent Nd:YAG laser space communication system. A freely suspended and conductively coated single-mode fiber end is excited to a fast small amplitude conical motion when electrostatically deflected close to its mechanical resonances by the capacitive action of one or two electrodes. The induced intensity modulation of the laser light coupled into the fiber is phase-sensitively detected (optionally after coherent amplification) and used for spatial input coupling optimization in a servo loop steering the laser beam. Modulation frequencies higher than 10 kHz are feasible in a very compact, rugged device at low power consumption. The device can also be modified for scanning of a transmitter beam.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ulrich A. Johann, Klaus Pribil, and Heinz Sontag "Novel optical-fiber-based conical scan tracking device", Proc. SPIE 1522, Optical Space Communication II, (1 May 1991);

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