Multilayered Optical Memory for High Density Data Storage in the Next Generation

We have developed a multilayered medium in which photosensitive recording layers and transparent layers are piled up alternately in order to increase signal to noise ratio. We fabricated multilayered medium by wet coating and laminating process using pressure sensitive adhesives (PSAs). We succeeded in recording and reading of bit data in a 20 layers medium. As a conclusion we may say that the multilayered medium fabricated by wet coating and laminating process is advantageous as the medium of optical memory