Inventor

YANAGAWA HISAHARU

JP28 patents

⚠️ This page may combine multiple inventors who share the name “YANAGAWA HISAHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YANAGAWA HISAHARU

FURUKAWA ELECTRIC CO LTD

Method of connecting an optical fiber to an optical waveguide

Multiple-fiber optical component and method for manufacturing of the same

Total internal reflection-type optical waveguide switch

Waveguide-type optical switch

Composite optical device

Optical line monitoring method and an apparatus permitting simultaneous line monitoring and information communication

Method of connecting optical waveguide and optical fiber

Optical fiber switch system

Multifiber connector, a method of manufacturing the same, and a construction for connecting the multifiber connector to an optical device

Mode field conversion fiber component

Thin film optical component for use in optical transmission lines and method of manufacturing the same

Optical directional coupler device and a method of driving same

Optical fiber for connection to waveguide type optical device and method of manufacturing the same

Optical waveguide component and a light signal processing method using the same

Method of positioning elements of an optical integrated circuit

Directional coupler type optical function element

Manufacturing method for waveguide-type optical components

Optical coupler/splitter with a filter

Optical switch

Method and apparatus for switching optical connector

Directional coupler type optical device and a driving method therefor

Waveguide-type coupler/splitter

Method of manufacturing silica waveguide optical components

Polling communication method

Semiconductor optical component and manufacturing method therefor

Optical fiber/terminal connecting device

Waveguide type optical component having optical coupling sections with different coupling efficiencies

FUKUKAWA ELECTRIC CO LTD

Optical semiconductor waveguide switch