To easily produce an optical memory element at a low cost by forming a resin core layer and resin clad layers laminated on both faces of the resin core layer and forming a rugged pattern on at least one of the interfaces between the resin core layer and resin clad layers.
The element has a resin core layer 2 and resin clad layers 3, 4 laminated on both faces of the resin core layer 2, and has a rugged pattern formed on at least one interface 24 of the interfaces 23, 24 between the resin core layer 2 and resin clad layers 3, 4. A plurality of optical waveguides 5a are laminated to constitute the memory element. Both of the core layer 2 and clad layers 3, 4 laminated are made of a resin, and are produced by using a hardening resin which can be hardened with light, heat or the like. Therefore, the rugged pattern of a desired form can be easily formed without using steps of exposure, development or the like of a photoresist in a conventional method, and the optical memory element can be easily obtained at a low cost.
KUBO HIDEYUKI
KOBAYASHI TOSHIHIRO
ISHIHARA HIROSHI
