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Proceedings Paper

Beam control of a 2D polarization maintaining fiber optic phased array with high-fiber count
Author(s): Jan E. Kansky; Charles X. Yu; Daniel V. Murphy; Scot E. J. Shaw; Ryan C. Lawrence; Charles Higgs
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Paper Abstract

We demonstrate, for the first time to our knowledge, successful beam control of a fiber optic phased array containing a large number of polarization maintaining fibers. As many as forty-eight fibers have been coherently combined via individual all-fiber phase modulators. The residual phase error is less than 1/30th of a wave. Results with both near-field interferometric control and target-in-the-loop control have been obtained. Experimental results are compared with numerical simulations and excellent agreement has been achieved. We investigated propagation of this phased array output through a turbulent atmosphere, and used the all-fiber phase modulators for the compensation of turbulence effects on the array output. This work paves the way towards scaling such fiber optic phased arrays to very high fiber count. Eventually thousand of fibers can be controlled via such a scheme.

Paper Details

Date Published: 29 August 2006
PDF: 11 pages
Proc. SPIE 6306, Advanced Wavefront Control: Methods, Devices, and Applications IV, 63060G (29 August 2006); doi: 10.1117/12.680571
Show Author Affiliations
Jan E. Kansky, MIT Lincoln Lab. (United States)
Charles X. Yu, MIT Lincoln Lab. (United States)
Daniel V. Murphy, MIT Lincoln Lab. (United States)
Scot E. J. Shaw, MIT Lincoln Lab. (United States)
Ryan C. Lawrence, MIT Lincoln Lab. (United States)
Charles Higgs, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 6306:
Advanced Wavefront Control: Methods, Devices, and Applications IV
Michael K. Giles; John D. Gonglewski; Richard A. Carreras, Editor(s)

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