Inventor

OKAYAMA HIDEAKI

JP62 patents

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

OKAYAMA HIDEAKI

OKI ELECTRIC IND CO LTD

Optical multiplexer-demultiplexer with mutually intersecting sub-gratings

Wavelength conversion apparatus with improved efficiency, easy adjustability, and polarization insensitivity

Spot size converter

Optical switch having optical deflector

Y-branch waveguide

Two-stage optical switch circuit network

Optical cross connector apparatus

Wavelength router

Multiwavelength optical switch with its multiplicity reduced

Polarization-independent optical wavelength filter with simplified structure

Photonic switching method and photonic switch utilizing same

Optical switching system which employs reference beams with different wavelengths

Optical switch matrix

Optical switch element and wavelength router

Optical wave combining/splitting device

Optical-wavelength interchanger element and optical-wavelength interchanger device

Lightwave system

Optical switch, method of operating optical switch, and method of designing optical switch

Optical switch for selectively connecting an optical input terminal with an optical output terminal

Optical circuit device and wavelength router

Lightwave filter and lightwave selective router

Optical wavelength filter with reduced sidelobes and simple design

Optical wavelength filter device

Waveguide-type optical diffraction grating and optical wavelength filter

Optical wavelength demultiplexer having optical interference filters connected in cascade

Wavelength conversion device and wavelength conversion method

Waveguide-type optical switch

Waveguide type photoswitch with a short coupling region

Waveguide-type optical device

Waveguide-type optical switch

Distributed coupler switch

Optical wave-length filter and a driving method thereof

Optical waveguide element and receiving circuit

Wavelength filter

Optical deflector

Optical multiplexing/demultiplexing device

Optical buffer device

Optical switch

Optical wavelength filter

Wavelength router

Optical directional coupler

Wavelength conversion element with quasi-phase matching structure

Data transfer network

Optical switch unit

Optical multiplexing and de-multiplexing element and arrayed-waveguide grating-type optical wavelength filter

Optical device

OKAYAMA HIDEAKI

Optical multiplexer/demultiplexer

Optical resonator and tunable laser

Optical wavelength filter with wavelength characteristic variation minimized

Optical resonator, and fluid optical sensor employing an optical resonator