Inventor

MANABE TETSUYA

JP17 patents

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

MANABE TETSUYA

NIPPON TELEGRAPH & TELEPHONE

Optical fiber loss measurement device and optical fiber loss measurement method

Vibration distribution measuring system, vibration waveform analysis method, vibration waveform analyzing device, and analyzing program

Environmental characteristic measurement device and environmental characteristic measurement method

Propagation characteristic analysis device and propagation characteristic analysis method

Optical fiber side input/output device and design method

Optical pulse testing device and optical pulse testing method

Optical fiber monitoring method, and optical fiber monitoring system

Optical-fiber path searching method, optical-fiber path searching system, signal processing device, and program

Raman gain efficiency distribution testing method, and Raman gain efficiency distribution testing device

Manhole position specification method and manhole position specification system

Optical device loss measurement apparatus, and optical device loss measurement method

Distributed optical fiber vibration measurement device and distributed optical fiber vibration measurement method

Simulation signal light generation device and simulation signal light generation method

Optical frequency multiplexing coherent OTDR, testing method, signal processing device, and program

Optical spectral line width calculation method, device, and program

Optical fiber lateral input/output device

NTT INC

Optical coupling device and optical coupling system