Estimation of Number of Bits of Multi-valued Optical Memory by SNR Equalization and Extension to Two-layer Recording

Haruhi Morimoto; Kouichi Nitta; Osamu Matoba

Presentation information

Oral presentation

3 Optics and Photonics » 3.3 Information photonics and image engineering

[21p-S224-1~15] 3.3 Information photonics and image engineering

Mon. Mar 21, 2016 1:45 PM - 6:45 PM S224 (S2)

Tsutomu Shimura(Univ. of Tokyo), Hirotsugu Yamamoto(Utsunomiya Univ.), Tatsuki Tahara(Kansai Univ.), Yasuhiro Takaki(TUAT)

6:15 PM - 6:30 PM

[21p-S224-14] Estimation of Number of Bits of Multi-valued Optical Memory by SNR Equalization and Extension to Two-layer Recording

Haruhi Morimoto¹, Kouichi Nitta¹, 〇Osamu Matoba¹ (1.Kobe Univ.)

Keywords:optical memory,multi-valued

In this research, we evaluate the number of bits in multi-valued optical memory by using convex-shaped marks fabricated by two-photon absorption. Minimum Signal-to-Noise Ration (SNR) can be increased by equalizing the all SNRs by controlling the intervals and the standard deviations of the multi-valued data. From the numerical results, 6 bits are possible when the minimum SNR is larger than 2. We also extend the two-layer recording to increase the storage capacity.