On-axis servo control in pickup actuator for disk type holographic data storage

Autor: Hong-Seok Lee, Seok Ho Song, Ji-Deog Kim, Sung-Phil Kim, Pill-Soo Kim, Cha-Hwan Oh
Rok vydání: 2003
Předmět:
Zdroj: Korean Journal of Optics and Photonics. 14:58-64
ISSN: 1225-6285
DOI: 10.3807/kjop.2003.14.1.058
Popis: In order to read correct data from a disk-type holographic storage medium, it is very important to implement a servo-control in the pick-up module, as in a conventional CD-ROM. We propose a novel servo-control method using a glass plate on the optical axis, which is able to compensate the mechanical errors coming from wobbling of holographic disk and spindle motor. By rotating the glass plate within 10 degrees, we can reduce the reading errors of 200 to 15 .
Databáze: OpenAIRE