Matching for realizing high-speed reading in holographic data storage system

In the era of big data, data storage density, and reading speed are becoming increasingly important. Therefore, achieving high-speed data reading in the holographic data storage system is particularly crucial. The key to realizing high-speed data reading in the holographic data storage system is to ensure frame rate matching among key devices. In this paper, we research the frame rate matching of the digital micro-mirror device (DMD), the acousto-optic modulator (AOM), the high-speed camera, and the electric displacement table loaded with materials. We have determined the maximum matching frame rate of the system with respect to changes in the exposure time and resolution of the camera, as well as the phase difference between the AOM and DMD. By finely adjusting the parameters of key devices in the system, we can ultimately achieve a matching frame rate of 18kHz. Under conditions where the electric displacement table speed is 40 mm/s, and the light intensity of the incident materials is 0.6 mW, the holographic data storage system can attain a reading frame rate of up to 8kHz, resulting in a data transfer rate of 5.8GB/s.