Abstract
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.
Original language | English |
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Pages (from-to) | 1728-1734 |
Number of pages | 7 |
Journal | IEICE Electronics Express |
Volume | 7 |
Issue number | 23 |
DOIs | |
Publication status | Published - 2010 Dec |
Keywords
- Aberration correction
- Optical switch
- Particle swarm optimization
- Spatial light modulator
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering