Aberration correction in an adaptive free-space optical interconnect with an error diffusion algorithm
Applied Optics, Vol. 45, Issue 16, pp. 3782-3792 (2006)
http://dx.doi.org/10.1364/AO.45.003782
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Abstract
Aberration correction within a free-space optical interconnect based on a spatial light modulator for beam steering and holographic wavefront correction is presented. The wavefront sensing technique is based on an extension of a modal wavefront sensor described by Neil et al. [J. Opt. Soc. Am. A 17, 1098 (2000)], which uses a diffractive element. In this analysis such a wavefront sensor is adapted with an error diffusion algorithm that yields a low reconstruction error and fast reconfigurability. Improvement of the beam propagation quality (Strehl ratio) for different channels across the input plane is achieved. However, due to the space invariancy of the system, a trade-off among the beam propagation quality for channels is obtained. Experimental results are presented and discussed.
© 2006 Optical Society of America
OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(050.1970) Diffraction and gratings : Diffractive optics
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(090.1000) Holography : Aberration compensation
(200.4650) Optics in computing : Optical interconnects
(230.6120) Optical devices : Spatial light modulators
History
Original Manuscript: June 16, 2005
Revised Manuscript: September 12, 2005
Manuscript Accepted: September 19, 2005
Citation
Diego Gil-Leyva, Brian Robertson, Timothy D. Wilkinson, and Charley J. Henderson, "Aberration correction in an adaptive free-space optical interconnect with an error diffusion algorithm," Appl. Opt. 45, 3782-3792 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-16-3782
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