发明名称 |
Optical waveguide, holographic medium, holographic storage and retrieval method and system |
摘要 |
A holographic medium is formed of an optical waveguide including at least one core layer positioned between at least one portion of a material having a lower refractive index, a diffraction grating layer formed at a boundary between the core layer and the material of lower refractive index or in the core layer, and a storage layer outside the optical waveguide. Upon storing information in the storage layer a reference beam and an object are input into the optical waveguide and in retrieving stored information the reference beam is emitted to an end face of the core layer and transmitted through the core layer to be transformed into a diffracted beam in a diffraction grating layer that is emitted outside the core layer and transmitted through the storage layer, where the object beam is retrieved as a retrieved beam.
|
申请公布号 |
US7046892(B2) |
申请公布日期 |
2006.05.16 |
申请号 |
US20020184686 |
申请日期 |
2002.06.19 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
YOSHIKAWA HIROSHI;ANDOH YASUKO;ITOH KEIICHIRO;SENDA MASAKATSU;KUROKAWA YOSHIAKI;TANABE TAKAYA |
分类号 |
G02B6/10;G02B6/12;G03H1/26;G11B7/0065 |
主分类号 |
G02B6/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|