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US 7,068,871 B2Granted
Optical wiring substrate, method of manufacturing optical wiring substrate and multilayer optical wiring
AssigneeFujitsu Limited
InventorsAkio Sugama, Masayuki Kato, Masatoshi Ishii, Shinya Sasaki, Tsuyoshi Aoki
Life of this patent
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Abstract
An optical wiring substrate provides a slab optical waveguide having a refractive index different from a refractive index of other surrounding portions and a planar convex lens being provided continuously to a tip portion of an optical path of an optical wave guide including a core and cladding and formed on a substrate. The optical path of light passing through the planar convex lens is converted approximately by 90° with a mirror. The light reflected with the mirror is made as parallel light rays by use of a cylindrical lens.
Claims6
An optical wiring substrate comprising:
- a multilayer substrate;
- a plurality of N input optical wiring structures on an input side of said multilayer substrate, each of said input wiring structures having N input terminals formed on one face of said multilayer substrate;
- and
- a corresponding plurality of N output optical wiring structures on an output side of said multilayer substrate, each of said output optical wiring structures having N output terminals formed on another face of said substrate such that said output terminals are orthogonalized with said input terminals on said substrate, each input terminal of each of said plurality of input optical wiring structures being connected with an output terminal of one of said plurality of output optical wiring structures across different layers of said multilayer substrate at an interlayer transfer portion, wherein the input terminals of each input optical wiring structure are respectively connected to output terminals of different output optical wiring structures.
1 more element
Dependencies are inferred from the claim text.