Inventor

KAWANISHI TETSUYA

JP59 patents

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

KAWANISHI TETSUYA

NAT INST INF & COMM TECH

Bias adjustment method for optical SSB modulator or optical FSK modulator

Super flat optical frequency comb signal generator

Phase control optical FSK modulator

Optical FSK/SSB modulator having intensity balance function

Automatic adjusting system of frequency shift keying modulator

Fourth harmonic generating system using optical double side-band suppressed carrier modulator

Optical amplitude modulation system capable of cancelling high order component

Space division multiplexing apparatus including multi-core fiber and selfhomodyne detection method

Photoelectric oscillator

Resonance type optical modulator using symmetric or asymmetric electrode

High-speed multiplied signal generating method and device

Method and device for calibrating a light intensity measurement device

UWB signal generator using optical FSK modulator

Optical frequency shift keying modulator

Optical wavelength multiplexing FSK modulation method

Optical frequency converter

Reciprocating optical modulator

Low-noise optical frequency converter

Variable-optical-delay apparatus

High-speed communication control system

Tunable dispersion compensation apparatus

Method for evaluating characteristics of optical modulator having Mach-Zehnder interferometers

Multi-wavelength signal generation device and multi-wavelength light generation method

Multiple wavelength light source, and generation method for multiple wavelength light

Multiple-wavelength optical modulation apparatus

Optical frequency converter

In-vehicle optical network

High-speed photodetector array

KAWANISHI TETSUYA

Endoscope visual imaging and processing apparatus

Quadrature amplitude modulation signal generating device

Optical switch system using optical interference

Frequency shift keying demodulator

Method for evaluating characteristic of optical modulator having mach-zehnder interferometer

Method for evaluating characteristics of optical modulator having Mach-Zehnder interferometers

High-speed multiplied signal generating method and device

COMM RES LAB INDEPENDENT ADMIN

Optical frequency converter

Reciprocating optical modulation system

Optical frequency converter using reciprocating modulation

Optical modulator and optical signal and electric wave signal converter using same

Resonator-type semiconductor optical modulator with asymmetrical electrode structure

Method and apparatus for measuring three-dimensional distribution of electric field

SUMITOMO OSAKA CEMENT CO LTD

Optical SSB modulator

Nested modulator

Optical modulator

Optical waveguide element, optical waveguide device, and optical transmission apparatus

UNIV WASEDA

Extravisual obstacle detecting system

Foreign-object detection system

Waveguide, method of manufacturing waveguide and antenna

FUJIFILM CORP

Imaging apparatus

UNIV CALIFORNIA

Y-junction reflector tunable delay or resonator waveguide devices