16 August 1994 Experimental verification of an adaptive optical multiaperture receive antenna for laser space communications
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Klaus H. Kudielka, Wolfgang M. Neubert, Arpad L. Scholtz, 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); doi: 10.1117/12.184675; https://doi.org/10.1117/12.184675
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