Dynamic speckle multiplexing scheme in volume holographic data storage is proposed, since it offers a novel multiplexing geometry, and could be combined with other schemes to make the full use of the dynamic ranges. In this scheme, a random diffuser is added in the original reference path of the classical 90° setup. In this paper, we analyzed the propagation of the speckle field in the holographic system and established the related theoretical model based on the dynamic speckle auto-correlation function and diffraction theory. We successfully realized the dynamic speckle multiplexing in our experimental system and reached a storage density of 4.6 Gigapixels/cm3 based on the DPL laser source.
© 2003 Optical Society of AmericaFull Article | PDF Article
Yong Hoon Kang, Ki Hyun Kim, and Byoungho Lee
Opt. Lett. 22(10) 739-741 (1997)
Ki Hyun Kim, Hong-Seok Lee, and Byoungho Lee
Opt. Lett. 23(15) 1224-1225 (1998)
Vladimir Markov, James Millerd, James Trolinger, Mark Norrie, John Downie, and Dogan Timucin
Opt. Lett. 24(4) 265-267 (1999)