Theoretical Study on Data Transfer Rate of Near-Field Photochromic Memory

The data transfer rate of near-field photochromic memory was theoretically studied. The data transfer rate for the medium with the sensitivity eB=104 and BA=0.1 in the recording process was about 1 kilo bps (bits per second) at the light power density of 102 W/cm2, but it increased to over 1 Mbps at 105 W/cm2. Fluorescence and reflectance detection readout methods of a near-field photochromic optical memory were also theoretically studied. The data transfer rate at the light power of 10-6 W in the readout process was around 1–10 Mbps. When the average reflectance is high, there is a benefit of using a fluorescence detection method for obtaining a high data transfer rate.