Patent ID: 7480085
Filing Date: 2009-01-20
Classification: G02B,G11B

Abstract:
1. A holographic memory system comprising: a photosensitive holographic storage medium which holographically stores information; a source of a coherent light beam; and an optical steering subsystem for directing the coherent light beam to the holographic storage medium comprising: a variable optical divider comprising: wherein the one or more discrete light beams are a reference light beam, a data light beam or a reconstruction light beam; wherein the at least one polarizing beam splitter redirects and dynamically allocates the power of the polarized coherent light beam into the reference light beam and the data light beam when the system is in a write operational mode; wherein the at least one polarizing beam splitter redirects and dynamically allocates the power of the polarized coherent light beam into the reconstruction light beam when the system is in a read operational mode.