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논문 기본 정보

자료유형
학술저널
저자정보
Suying Cui (Jilin University) Xiaohui Zhao (Jilin University) Xu He (Jilin University) Jilin University (Jilin University)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.2 No.6
발행연도
2018.12
수록면
612 - 622 (11page)

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초록· 키워드

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In wave-front-sensor-less adaptive optics (WFS-less AO) systems, the Jacopo Antonello (JA) method belongs to the model-based class and requires few iterations to achieve acceptable distortion correction. However, this method needs a lot of measurements, especially when it deals with moderate or severe aberration, which is undesired in free-space optical communication (FSOC). On the contrary, the stochastic parallel gradient descent (SPGD) algorithm only requires three time measurements in each iteration, and is widely applied in WFS-less AO systems, even though plenty of iterations are necessary. For better and faster compensation, we propose a WFS-less hybrid approach, borrowing from the JA method to compensate for low-order wave front and from the SPGD algorithm to compensate for residual low-order wave front and high-order wave front. The correction results for this proposed method are provided by simulations to show its superior performance, through comparison of both the Strehl ratio and the convergence speed of the WFS-less hybrid approach to those of the JA method and SPGD algorithm.

목차

I. INTRODUCTION
II. ABERRATION ELIMINATION BY A WFS-LESS HYBRID METHOD
III. SIMULATION RESULTS
V. CONCLUSION
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