Inventor

AKASAKA YOUICHI

JP63 patents

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

AKASAKA YOUICHI

FUJITSU LTD

Optical phase-sensitive amplifier with raman amplifier intermediate stage

Optical amplification in an optical network

Optical system for compensating for signal loss

Optical system for compensating for signal loss

Low noise colorless, directionless, contentionless reconfigurable optical add/drop multiplexer

Optical phase-sensitive amplifier with fiber bragg grating phase shifter

Optical phase-sensitive amplifier with signal noise removal

Optical signal power gain

Suppressing signal noise on an optical fiber

In-band optical signal-to-noise ratio monitor

Phosphorous doped fiber-based Raman amplifier

Raman optical amplifier with fabry-perot pump laser

Stimulated Brillouin scattering suppressed highly non-linear optical fiber

Dual polarization optical pumping

Harmonic generation and phase sensitive amplification using a bragg reflection waveguide

Harmonic generation and phase sensitive amplification using a bragg reflection waveguide

Low-noise optical phase sensitive amplifier using a semiconductor nonlinear optical device

Mitigation of spectral offset in an optical filter

Correction table for interferometric optical signal-to-noise ratio monitor

FURUKAWA ELECTRIC CO LTD

Raman amplifier, optical repeater, and raman amplification method

Wavelength division multiplex communication link for optical transmission

Dispersion compensating optical fiber

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Dispersion compensating optical fiber for wavelength multiplex transmission and method using same

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Dispension shift optical fiber and wavelength division multiplex transmission system using the same

Dispersion compensating fiber and its manufacturing method

Dispersion compensating optical fiber

Stimulated brillouin scattering suppressed optical fiber

Raman amplifier, optical repeater, and Raman amplification method

Dispersion shifted optical fiber

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

SPRINT COMMUNICATIONS CO

Discrete amplification of an optical signal

Wavelength shifting in an optical network route to mitigate distortion in different types of fiber

Adding wavelengths to an optical communication network

Optical signal amplification using multiple backward-pumping systems

Polarization mode dispersion outage mitigation

Optical amplification in the 850 nm window

AKASAKA YOUICHI

System and method for communicating wireless data utilizing a passive optical network

Method and system for automatic lane negotiation in an optical network

System and method for compensating for polarization dependent loss

Method and system of automatic regeneration of optical signals

Raman amplifier, optical repeater, and Raman amplification method

VASSILIEVA OLGA I

System and method for reducing polarization dependent loss

YANG JENG-YUAN

Optical signal regeneration and amplification of M-PSK and M-QAM modulation formats using reconfigurable wavelength selective processors and phase-sensitive amplifiers

FUJITSU NETWORK COMMUNICATIONS

Optical QPSK signal regeneration and amplification