Optical memory

摘要

PCT No. PCT/GB91/01966 Sec. 371 Date Mar. 30, 1993 Sec. 102(e) Date Mar. 30, 1993 PCT Filed Nov. 8, 1991 PCT Pub. No. WO92/09078 PCT Pub. Date May 29, 1992.The present invention is based on the use of a plurality of gratings recorded in an optical waveguide, the gratings having different Bragg wavelengths selected to store individual bits of data. The invention has particular application to optical fiber communications networks.