Inventor

YAMAMOTO SHU

JP78 patents

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

YAMAMOTO SHU

KOKUSAI DENSHIN DENWA CO LTD

Optical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulses

WDM optical communication method with pre-emphasis technique and an apparatus therefor

Optical communication system and optical transmitting device

Soliton optical communication system and optical transmitter and optical receiver therefor

Wavelength division multiplexed optical fiber transmission equipment

Wavelength division multiplexed optical fiber transmission equiptment

Unitary mounting structure for semiconductor laser and optical fiber

Optical power measuring system terminal station and repeater therefor

Wavelength-division multiplexing optical transmission system

Wavelength converter, optically operational device and optical pulse phase detecting circuit

Surveillance method of optical communication line

Optical wavelength monitoring apparatus

Optical transmitting terminal

Laser light generator

Apparatus for measuring optical transmission characteristic

Optical communication system

Optical transmitter with the signal light of reduced degree of polarization and optical depolarizing circuit

Optical waveform shaping device for peforming waveform equalization and timing synchronization

Apparatus for monitoring the operation of an optical repeater

Wavelength division multiplexed optical processing device and optical communication transmission path

Optical access system

Optical add-drop multiplexer

Method and device for optical add/drop multiplexing using high speed polarization scrambler

Optical transmission line

Optical pulse generator

Optical modulator, optical short pulse generating device, optical waveform shaping device, and optical demultiplexer device

Bilateral optical transmission system and optical transceiver for pulse information

Gain-controllable optical amplifier and optical gain-control method

Optical transmission system

Optical amplifying-repeating transmission system

Optical amplifying transmitting system

Pumping light source drive system for an optical amplifier

Coupling system for output light of semiconductor laser

Optical submarine branching device

Optical transmission system and optical repeater

KDD CORP

Optical digital regenerator

Optical transmitting apparatus

Optical wavelength division multiplexed signal amplifying repeater and optical communication transmission line with very large capacity

Control signal superimposer

Optical amplifying transmission system and optical amplifier

Optical switching system

Optical repeater monitoring system and a method thereof

Optical amplifying transmission system and optical amplifying repeater

MITSUBISHI ELECTRIC CORP

Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods

Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods

Optical modulating apparatus

KDDI CORP

Enabling mobile IPv6 communication over a network containing IPv4 components using ISATAP

Optical data transmission method and its system, optical transmitter and its method, and optical switcher

TOSHIBA KK

Polarization control unit

KUKUSAI DENSHIN DENWA KABUSHIK

Line monitoring method and line monitoring apparatus