Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Optimization of Diffractive Optical Elements by Genetic Algorithm

  • Yoon, Jin-Seon (School of Electrical & Electronics Eng., Chungbuk Nat'l Univ) ;
  • Kim, Nam (School of Electrical & Electronics Eng., Chungbuk Nat'l Univ)
  • Received : 1999.12.17
  • Published : 2000.03.01
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Abstract

In this paper, a method based on the Genetic Algorithm(GA) for phase optimization is proposed. The programmable hybrid optical interconnection system implemented by the spatial light modula-tor is tested for a near-real-time optical processing. Designed diffractive grating has a 74.7[%] high diffraction efficiency and a $1.73 {\times}10^{-1}$ uniformity quantitatively. The dependence of characteris-tics on several parameters in the grating design are analyzed. Also, as a result of the geometrical transformation to obtain quantitative data for $3 {\times} 3$ spot beams, an objective optical experiment using CCD array detector produces the mean of beam intensity as a gray level of 202, the maximum value is 225, the minimum value is 186, and uniformity is quantitatively $1.93 {\times} 10^{-1}$, similar to the simulation result.

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References

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