Inventor

SHIGEHARA MASAKAZU

JP49 patents

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

SHIGEHARA MASAKAZU

SUMITOMO ELECTRIC INDUSTRIES

Optical fiber diffraction grating, a method of fabricating thereof and a laser light source

Array type light emitting element module and manufacturing method therefor

Optical component

Branch line monitoring system and branch line monitoring method

Optical waveguide device and optical device having long-period grating

Diffraction grating element, production method of diffraction grating element, and method of designing diffraction grating element

Optical fiber for optical amplifier, optical fiber amplifier and optical fiber laser

Optical fiber grating element, production method, and optical fiber filter

Optical filter and method of making the same

Semiconductor laser module

Optical waveguide and process for producing it

Optical waveguide and process for producing it

Optical fiber with built-in grating and optical fiber for forming grating therein

Optical fiber and fiber grating type filter including the same

Diffraction grating element

Laser light source and manufacturing method therefor

Optical input/output module and light-reflecting device

Diffraction grating element, production method of diffraction grating element, and method of designing diffraction grating element

Diffraction grating element

Variable dispersion compensator and optical transmission system

Pumping light source unit, raman amplifier, and optical transmission system

Optical signal processor

Optical filter functioning as both a gain equalizer and noise-light blocking filter

Optical filter having cascaded long-period gratings

Optical loss filter

Optical filter and method of making the same

Wavelength-variable light source and OTDR apparatus

Optical waveguide grating and method of making the same

Diffraction grating element, production method of diffraction grating element, and method of designing diffraction grating element

Optical device control apparatus and optical device control method

Optical component, optical device and optical communications system

Optical multiplexer/demultiplexer and adjustment method thereof

Optical fiber and optical fiber grating

Optical signal processor and optical signal processing method for processing optical signals in optical communications systems

Diffraction grating device manufacturing method, diffraction grating device manufacturing apparatus, and diffraction grating device

Optical waveguide type defraction grating device and a method of manufacturing thereof

Long-period grating device

Diffraction grating device

Method for determining an aging condition for an optical waveguide grating and temperature sensor

Fiber connection structure provided with optical connector, module, and assembly

Optical amplifier and optical communication system including the same

Gain equalizer and optical amplification apparatus

Optical amplifier and optical communication system including the same

Method for determining an aging condition for an optical waveguide grating and temperature sensor

Optical fiber grating device

SHIGEHARA MASAKAZU

Optical module and optical system

SUMITOMO ELECTRIC INDUST LTD

Laser light source apparatus, OTDR apparatus, and optical communication line inspection system

SAKABE ITARU

Stranded optical cable with connectors

SUMIDEN HIGH PREC CO LTD

Optical adapter