Inventor

SHUKUNAMI NORIFUMI

JP54 patents

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

SHUKUNAMI NORIFUMI

FUJITSU LTD

Wavelength-division-multiplexing optical amplifier

Gain and signal level adjustments of cascaded optical amplifiers

Doped optical fiber having core and clad structure for increasing the amplification band of an optical amplifier using the optical fiber

Method and apparatus using four wave mixing for optical wavelength conversion

Optical amplifier for collectively amplifying optical signals having a plurality of multiplexed wavelengths

Method and apparatus for controlling optical amplifier used for optically amplifying wavelength-division multiplexed signal

Gain and signal level adjustments of cascaded optical amplifiers

Optical amplifier and fiber module for optical amplification

Gain and signal level adjustments of cascaded optical amplifiers

Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using same

Optical amplifier amplifying wavelength multiplexed light, and wavelength multiplexed light communications system

Optical amplifier for amplifying multi-wavelength light

Optical fiber amplifier

Light source apparatus, optical amplifier and optical communication system

Optical amplifying fiber and forming method for fiber grating

Wavelength-division-multiplexing optical amplifier

Optically amplifying fiber and optical fiber amplifier

Wavelength converter, wavelength conversion method, and transmission device

Bidirectional monitor module, optical module, optical add-drop multiplexer, and optical system

Optical transmission apparatus and optical signal processing method

Transmitting device, communication system, and method for transmission level control

Optical channel monitor

Gain and signal level adjustments of cascaded optical amplifiers

Optical fiber reel

Optical fiber connecting portion structure and light monitor apparatus

Fiber-optic communication apparatus, fiber-optic communication system, and optical power control method

Transmission device, transmission system, and transmission method

Transmission apparatus, transmission system, and method of controlling average optical input power

Multistage optical amplifier with gain control using pump ratio

Optical amplifier and control method for optical amplifier

Optical amplifier using reflection-type variable optical attenuator for feedback

Optical amplifier and method for amplifying wavelength multiplexed transmission signal light

Optical coherent transceiver and filter adjustment method

Controller and control method for Raman amplifier

Transmission device, reception device, transmission method, and reception method

Optical transmission device and optical transmission method

Optical amplifier for amplifying multi-wavelength light

Light source apparatus, optical amplifier and optical communication system

Switchable optical amplifier and optical transmission apparatus

Optical amplifier with loss adjustment unit based on gain

Transmission device and transmission method

SHUKUNAMI NORIFUMI

OSNR monitor device and OSNR measurement device

Optical amplifier with feedback to obtain set gain and gain tilt

Method for measuring nonlinear optical properties

YUKI MASAHIRO

Communication system, measuring apparatus, transmitting apparatus, and measurement method

Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method

NAKAMURA KENTARO

Optical transmission apparatus

OSNR measuring device and optical communication system

INAGAKI SHINYA

Gain and signal level adjustments of cascaded optical amplifiers

SUZUKI YUICHI

Raman amplifier with signal modulated before stimulated brillouin scattering occurs