Multi-layer compact disc information detection device using multi-layer compact disc and three-dimensional multiwavelength whispering gallery laser

摘要

Provided are a multi-layer compact disc information detection apparatus using a multi-layer compact disc and a three-dimensional multi-wavelength whispering gallery laser according to the present invention. The multilayer compact disc according to the present invention comprises a first layer having a plurality of tracks and a second layer to an Nth layer having a plurality of tracks sequentially stacked on the first layer, wherein n is one or more. When the integer is equal to or less than (N-1), an n-th narrow band reflective coating for reflecting light of an nth wavelength and transmitting light of an n + 1th wavelength is provided below the nth layer, and the Nth layer The N-th narrowband reflective coating for reflecting light of the N-th wavelength is provided at the bottom of the multi-layered track layer of the compact disc to store a large amount of information. Stored information can be read in a simultaneous parallel processing method.