Inventor
SHIBAHARA KOKI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “SHIBAHARA KOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
10 patentsUS11770205B2Sep 26, 2023
Optical signal processing apparatus, optical signal processing method and computer program
NIPPON TELEGRAPH & TELEPHONE3 citations72
US11349564B2May 31, 2022
Crosstalk estimation system
NIPPON TELEGRAPH & TELEPHONE4 citations71
US11888281B2Jan 30, 2024
Multimode optical amplifier
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11101914B2Aug 24, 2021
Optical transmission system and optical transmission method
NIPPON TELEGRAPH & TELEPHONE0 citations62
US12395248B2Aug 19, 2025
Signal detector, carrier phase retrieval apparatus, carrier phase retrieval method and carrier phase retrieval program
NIPPON TELEGRAPH & TELEPHONE0 citations51
US12176952B2Dec 24, 2024
Signal detection apparatus, signal detection method and program
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11888584B2Jan 30, 2024
Optical transmission system, optical transmission apparatus and optical transmission method
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11888522B2Jan 30, 2024
Optical transmission system and optical transmission method
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11438071B2Sep 6, 2022
Optical repeater
NIPPON TELEGRAPH & TELEPHONE0 citations51
US12034269B2Jul 9, 2024
Light amplifying relay system
NIPPON TELEGRAPH & TELEPHONE0 citations50