FIELD: physics.
SUBSTANCE: multilayer optical disc consists of a series of alternating layers of optically transparent materials merged into groups. Each group of layers comprises a waveguide layer of material with refraction index n1. Said layer lies between an insulating layer of material with refraction index n2 and a layer of photochromic material with refraction index n3. The refraction indices satisfy the relationships n2<n1 and |n3-n1|<0.001.
EFFECT: high information capacity of the multilayer disc with increase in reliability of its reading.
4 cl, 3 dwg
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