A superresolution optical disk with a combination of optical path filtering and saturable absorption techniques |
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Authors: | Yihong Wu Chong Tow Chong |
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Institution: | (1) Department of Electrical Engineering, National University of Singapore, 10 Kent Ridge Crescent, 19260, Singapore;(2) Data Storage Institute, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore |
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Abstract: | Calculations have been done for the modulation transfer function of a superresolution optical disk with a combination of optical
path filtering and saturable absorption techniques. The results reveal that optical path filtering alone can only equalize,
to a certain degree, the spatial frequency response of the opticaldisk system, but it can not attain any response beyond the
cutoff frequency. With an additional saturable absorption layer in-between the substrate and the information layer, it is
found that the optical response both under and beyond the cutoff frequency can be greatly improved. |
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Keywords: | optical disk superresolution optical path filtering saturable absorption |
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