Infrared and Laser Engineering, Volume. 45, Issue 9, 935006(2016)
High density holographic versatile disc (HVD) system using collinear technologies
Collinear Holography was proposed by OPTWARE Corporation, in which the information and reference beams were aligned co-axially and modulated by the same SLM. With this unique configuration the optical pickup can be designed as small as the DVD′s, and can be placed on one side of the recording disc. A 2-dimensional digital page data format was used and the shift-multiplexing method was employed to increased recording density of HVD. As the servo technology is being introduced to control the objective lens to be maintained precisely to the disc in the recording and the reconstructing process, a vibration isolator is no longer necessary. In HVD, the pre-formatted meta-data reflective layer was used for the focus/tracking servo and reading address information, and the dichroic mirror layer was used for detecting holographic recording information without interfering with the preformatted information. Experimental and theoretical studies suggest that the holographic material is very effective to increased recording density of the system. HVD will be compatible with existing disc storage systems, like CD and DVD, and enable us to expand its applications into other optical information storage systems.
Get Citation
Copy Citation Text
Hideyoshi Horimai, Lin Xiao, Liu Jinpeng, Tan Xiaodi. High density holographic versatile disc (HVD) system using collinear technologies[J]. Infrared and Laser Engineering, 2016, 45(9): 935006
Category: 光存储技术
Received: Aug. 19, 2016
Accepted: Sep. 5, 2016
Published Online: Oct. 25, 2020
The Author Email: Horimai Hideyoshi (hideyoshi_horimai@holymine3d.com)