Niitsu Takehiro

TL;DR: It was revealed that, when a linearly polarized object beam with an arbitrary polarization direction was recorded, the retrieved beam had the same polarization state as that of the object beam, with a constant diffraction efficiency of 0.1.

TL;DR: In this article, a transmission unit of a signal transmission device includes a transmission side detection unit that detects image information from an inputted electrical signal; a receiving unit that receives, from a reception unit, a status signal representing an arrival status of an outputted optical signal; and a control unit that controls an electrical-optical conversion unit on the basis of the detection result of the transmission-side detection unit and the status signal of the receiving unit so that the output of the optical signal is shut down in at least one of a case where image information is not included in an electrical

TL;DR: In this article, the authors proposed a solution to provide a semiconductor storage device securing integrity of data without stopping storage function even when a failure occurs in an optical transmission path, where data from a host apparatus 3 is converted to an optical signal in an electrical-optical conversion part 12 This optical signal is optically transmitted through optical fiber 121, sheet-like optical wave guide path 13 and optical fibers 131A to 131D, and is stored in memories 16A to 16D by memory controllers 15A to 15D after being returned to an electrical signal in optical-elect

TL;DR: In this paper, a method and an apparatus capable of filtering based on desired spatial frequency characteristics without loss of Fourier spectrum frequency components, and of matched filtering of high recognition capability without losing functions of data recording and reconstruction as well as high-speed transmission and retrieval features and mass storage capacity characteristic of a holographic memory is presented.