Patent ID: 7330622
Filing Date: 2008-02-12
Classification: G02B

Abstract:
1. A laminated optical waveguide film, comprising; a plurality of waveguide cores, and a plurality of end surfaces at which the waveguide cores are exposed, wherein, among the plurality of end surfaces, a first end surface has the waveguide core end surfaces laminated in a thickness direction, wherein at the first end surface, a first portion of the plurality of waveguide cores form an upper waveguide, the first portion of the plurality of waveguide cores being arranged in parallel and associated with at least a first clad film, and a second portion of the plurality of waveguide cores form a lower waveguide, the second portion of the plurality of waveguide cores being arranged in parallel and associated with at least a second clad film, the upper waveguide being above the lower waveguide, and a second end surface has the waveguide core end surfaces arranged in parallel, and a gap between the upper waveguide and the lower waveguide, wherein at least at the first end surface, the gap is maintained by a spacer layer, and wherein each waveguide core is sandwiched between two clad films.