Experimental verification of an adaptive optical multiaperture receive antenna for laser space communications

Klaus H. Kudielka; Wolfgang M. Neubert; Arpad L. Scholtz; Walter R. Leeb

doi:10.1117/12.184675

16 August 1994 Experimental verification of an adaptive optical multiaperture receive antenna for laser space communications

Klaus H. Kudielka, Wolfgang M. Neubert, Arpad L. Scholtz, Walter R. Leeb

Author Affiliations +

Proceedings Volume 2123, Free-Space Laser Communication Technologies VI; (1994) https://doi.org/10.1117/12.184675
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The feasibility of phased telescope arrays for coherent optical space communications is demonstrated by a proof-of-concept laboratory experiment. The incident optical power is collected by four subtelescopes and coherently combined into a single monomode output fiber. The implemented optical receive array antenna is self-phasing, i.e. the optical subfield pistons are automatically adapted with respect to the direction of the incident wavefront. The telescope array is completely independent of any subsequent receiver and of the data modulation format employed. Our experimental setup operates at a wavelength of 1064nm. With an optical input power of 1nW per subaperture, the system efficiently combines the optical input subwaves and responds to a step- shaped change of the input wavefront direction within 1ms.

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Klaus H. Kudielka, Wolfgang M. Neubert, Arpad L. Scholtz, and Walter R. Leeb "Experimental verification of an adaptive optical multiaperture receive antenna for laser space communications", Proc. SPIE 2123, Free-Space Laser Communication Technologies VI, (16 August 1994); https://doi.org/10.1117/12.184675

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