Fast aberration-correcting algorithm for an SLM-based optical switch

IEICE Electronics Express

Keisuke Sorimoto³  Hitoshi Kawashima¹  Kenji Kintaka¹  Hiroyuki Tsuda³  Hisato Uetsuka²  Hiroshi Ishikawa¹  Masahiko Mori¹  Toshifumi Hasama¹ 

[1] National Institute of Advanced Industrial Science and Technology (AIST);Hitachi Cable, Ltd.;Graduate School of Science and Technology, Keio University

关键词: spatial light modulator;    optical switch;    aberration correction;    particle swarm optimization;   

DOI  :  10.1587/elex.7.1728

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)Cited-By(2)We propose a novel method to efficiently correct the aberration in a free-space optical switch, where a spatial light modulator (SLM) is used to control wavefronts. A particle swarm optimization (PSO) method is applied to finding the optimum set of Zernike modes to compensate the aberration. We find out that the obtained coefficients of the lower-order modes and those of the higher-order ones exhibit a linear relationship when the optimization flow is interrupted by the local optima. We can drastically reduce the time for the calibration by using this relationship among the Zernike coefficients.

【 授权许可】

Unknown