Inventor

OOI HIROKI

JP82 patents

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

OOI HIROKI

FUJITSU LTD

Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level

Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them

Optical transmitter and optical transmission system

Optical modulation apparatus and method of controlling optical modulator

Optical modulating device and optical modulating method

Optical transmission system, optical multiplexing transmission system, and related peripheral techniques

Drift compensating circuit for optical modulators in an optical system

Optical transmission system with transmission characteristic measuring device

Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method

Optical modulation apparatus and method of controlling

Optical transmission system, optical multiplexing transmission system, and related peripheral techniques

Optical transmission system, optical multiplexing transmission system, and related peripheral techniques

Control unit for optical modulators producing multiplexed optical output signal

Optical demultiplexer

Optical transmission system, optical multiplexing transmission system, and related peripheral techniques

Optical transmitting apparatus and optical communication system

Optical transmitting apparatus, method of increasing the number of paths of the apparatus, and optical switch module for increasing the number of paths of the apparatus

Optical receiving apparatus and method for controlling the optical receiving apparatus

Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method

Method and system for compensating chromatic dispersion

Apparatus and method for optical modulation and demodulation

Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level

Method of setting signal wavelength in optical transmission system

Method and apparatus for minimizing the intensity of a specific frequency component of an optical signal travelling through an optical fiber transmission line to thereby minimize the total dispersion

Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line

Optical time division demultiplexing apparatus and demultiplexed signal switching method as well as optical time division multiplex transmission system

Apparatus for driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line

Method and apparatus of driving an optical modulator to measure, and compensation for dispersion in an optical transmission line

Optical time-division multiplexer capable of supplying stable output signal

Method and device for extracting a timing signal

Optical cross-connect using wavelength selective switches

Optical add/drop multiplexer

Optical add/drop multiplexer

Optical node and optical add/drop multiplexer

Quadrature phase-shift keying modulator and phase shift amount controlling method for the same

Wavelength division multiplexing transmission system

Automatic dispersion compensation device and compensation method

Control apparatus and control method for optical modulator

Chromatic dispersion compensation controlling system

System for compensating for chromatic dispersion and polarization mode dispersion

Optical receiving station, optical communication system, and dispersion controlling method

Method and apparatus for compensation of polarization-mode dispersion

Optical transmission apparatus

Polarization mode dispersion compensator based on degree of polarization

In-band optical signal-to-noise ratio monitor

Transmission system and transmission method

AKIYAMA YUICHI

Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them

Optical add/drop multiplexer

OOI HIROKI

Optical network interconnect device

TANAKA TOSHIKI

Optical transmitter, optical transmission method, and wavelength-selective variable delayer