1
Nobuo Miyadera, Rei Yamamoto: Optical waveguide structure. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, November 25, 2008: US07457498 (7 worldwide citation)

An optical waveguide structure has a single port on one input/output side, a plurality of ports on another input/output side and an S-curve optical waveguide portion arranged on the outermost side of the waveguide structure and including a first circular arc optical waveguide portion and a second ci ...


2
Nobuo Miyadera, Rei Yamamoto: Light branching optical waveguide. Hitachi Chemical, Antonelli Terry Stout & Kraus, November 23, 2010: US07840108 (7 worldwide citation)

Provided is a light branching optical waveguide including: at least one incident light waveguide (A) optically connected to one end of a multi-mode optical waveguide; and output light waveguides (B) larger in number than the incident light waveguide (A) optically connected to the other end thereof, ...


3
Nobuo Miyadera, Rei Yamamoto: Curved optical waveguide and optical device. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, February 24, 2009: US07496254 (4 worldwide citation)

A curved optical waveguide comprising a core and a clad, characterized in that: the core shape of the curved optical waveguide has no reversal of a curvature on a halfway; and curvatures at both ends of the curved optical waveguide gradually approach zero. A curved optical waveguide comprising a cor ...


4
Nobuo Miyadera, Rei Yamamoto: Optical system with optical waveguides. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, August 11, 2009: US07574081 (3 worldwide citation)

The present invention provides an optical system with waveguides, which comprises first, second and third optical input/output means (12, 14, 16), fourth and fifth multi-mode optical waveguides (20, 22) each capable of propagating light with plural propagation modes, and optical-filter mounting mean ...


5
Nobuo Miyadera, Rei Yamamoto: Optical reflector, optical system and optical multiplexer/demultiplexer device. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, August 18, 2009: US07577328 (2 worldwide citation)

An optical reflector, an optical multiplexer/demultiplexer device and an optical system which can allow more flexible arrangement of an optical filter thereof, and enhance performance of wavelength division multiplexing communication thereof are provided. An optical reflector according to the presen ...


6
Nobuo Miyadera, Rei Yamamoto: S-shaped curved optical waveguide and optical device. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, October 28, 2008: US07444050 (2 worldwide citation)

The present invention relates to a curved optical waveguide which is free of any axis-deviation structure in the middle of the waveguide and which has a sigmoidal core shape, wherein the curvature thereof at one end is zero and the curvature thereof at the other end is finite (>0) and the use of suc ...


7
Rei Yamamoto, Nobuo Miyadera: Optical waveguide structure including at least first, second and third waveguides and coupling waveguide. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, February 16, 2010: US07664353

The present invention disclosed is an optical waveguide structure that has a first waveguide provided with the opposite ends A and B, a second waveguide with the opposite ends C and D, a third waveguide with the opposite ends E and F, and a coupling waveguide having its first beam incoming/outgoing ...


8
Rei Yamamoto, Toshihiro Kuroda: Optical system and method of manufacturing the same. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, July 6, 2010: US07748910

An optical system comprising a substrate and an optical waveguide which is formed on the substrate and to which optical fibers are optically coupled. The optical waveguide has a plurality of straight core portions which obliquely intersect each other. The substrate has positioning sections for posit ...


9
Nobuo Miyadera, Rei Yamamoto, Shigeyuki Yagi: Optical waveguide structure, optical-waveguide-type optical module and optical fiber array. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, October 19, 2010: US07817889

An optical waveguide structure comprises a substrate (12) having first and second groove arrays (8, 10), including grooves (8a-8g, 10a-10h), and an optical waveguide (14), having cladding and core (14b) layered on the substrate between the groove arrays to vertically align the core with cores (2a, 4 ...


10
Rei Yamamoto, Toshihiro Kuroda: Optical device, optical system, and method of manufacturing optical device. Hitachi Chemical Company, Antonelli Terry Stout & Kraus, September 4, 2012: US08260095

An optical device to be connected to an optical fiber and an optical system in which the optical fiber is fixed to the optical device are provided, which optical device and optical system can restrict variations in a distance between inclined surfaces for supporting the optical fiber, and can enhanc ...