Low-order adaptive optics for free-space optoelectronic interconnects

Gourlay, J.; Yang, Tzu-Ruei; Ishikawa, Masatoshi; Walker, Andrew

doi:10.1364/ao.39.000714

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…VI. EXPERIMENTS An adaptive alignment system using the variable angle prism (VAP) and electrical closed-loop feedback was demonstrated by us in another report [22]. However, the previous work, like most other reports in the literature, was concentrated only on compensating misalignments.…”

Section: Results Of Computer Simulationsmentioning

confidence: 99%

Adaptive alignment packaging for 2-D arrays of free-space optical-interconnected optoelectronic systems

Yang

Gourlay²,

Walker

2002

IEEE Trans. Adv. Packag.

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An adaptive alignment scheme for packaging two-dimensional (2-D) arrays of optoelectronic systems interconnected by free-space optics is presented. A method of using three quadrant detectors to detect alignment errors in six degrees of freedom is described. However, the complexity of this system increases due to the interactions among the detected error signals. A novel control algorithm is presented to eliminate the interaction and simplify the design of the closed-loop feedback control. A computer simulation compares different algorithms and shows the effectiveness of the proposed algorithm. An experimental closed-loop feedback system demonstrated the principle of the error detection and correction of the proposed system with initial errors in multiple degrees of freedom.Index Terms-Active alignment, adaptive alignment, closed-loop feedback control, free-space optical interconnections, free-space optical packaging.

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Section: Results Of Computer Simulationsmentioning

confidence: 99%

Adaptive alignment packaging for 2-D arrays of free-space optical-interconnected optoelectronic systems

Yang

Gourlay²,

Walker

2002

IEEE Trans. Adv. Packag.

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“…Also not directly addressed in this review are other important applications of AO, including laser communications [30], imaging of the retina of the eye [9] and consumer electronics [11]. Certain topics from this paper, like wavefront sensing and deformable mirrors, do pertain to these applications.…”

Section: Introductionmentioning

confidence: 99%

Inverse problems in astronomical adaptive optics

Ellerbroek

Vogel

2009

Inverse Problems

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Adaptive optics (AO) is a technology used in ground-based astronomy to correct for the wavefront aberrations and loss of image quality caused by atmospheric turbulence. Provided some difficult technical problems can be overcome, AO will enable future astronomers to achieve nearly diffractionlimited performance with the extremely large telescopes that are currently under development, thereby greatly improving spatial resolution, spectral resolution and observing efficiency which will be achieved. The goal of this topical review is to present to the inverse problems community a representative sample of these problems. In this review, we first present a tutorial overview of the mathematical models and techniques used in current AO systems. We then examine in detail the following topics: laser guidestar adaptive optics, multi-conjugate and multi-object adaptive optics, high-contrast imaging and deformable mirror modeling and parameter identification.

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