Inventor
TAKASAKA SHIGEHIRO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TAKASAKA SHIGEHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FURUKAWA ELECTRIC CO LTD
11 patentsUS9270076B2Feb 23, 2016
Optical amplifier, optical amplifying system, wavelength converter, optical amplification method, and optical communication system
FURUKAWA ELECTRIC CO LTD6 citations83
US11940649B2Mar 26, 2024
Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structure
FURUKAWA ELECTRIC CO LTD2 citations72
US9722388B2Aug 1, 2017
Multi-core optical amplifying fiber device and multi-core optical fiber amplifier
FURUKAWA ELECTRIC CO LTD2 citations72
US12399317B2Aug 26, 2025
Optical fiber bundle structure, optical fiber connection structure, and optical fiber bundle structure manufacturing method
FURUKAWA ELECTRIC CO LTD0 citations62
US11073656B2Jul 27, 2021
Optical coupler and optical amplifier
FURUKAWA ELECTRIC CO LTD1 citations62
US12222541B2Feb 11, 2025
Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structure
FURUKAWA ELECTRIC CO LTD0 citations61
US12204141B2Jan 21, 2025
Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structure
FURUKAWA ELECTRIC CO LTD0 citations61
US10816873B2Oct 27, 2020
Optical amplifier, optical amplification system, wavelength converter, and optical communication system
FURUKAWA ELECTRIC CO LTD1 citations61
US12248171B2Mar 11, 2025
Multi-core optical amplifying fiber, multi-core optical fiber amplifier, and optical communication system
FURUKAWA ELECTRIC CO LTD0 citations52
US11519759B2Dec 6, 2022
Cable, cable shape sensing system, sensing system, and cable shape sensing method
FURUKAWA ELECTRIC CO LTD0 citations51
US9948057B2Apr 17, 2018
Optical amplifier, optical amplifying system, wavelength converter, and optical communication system
FURUKAWA ELECTRIC CO LTD0 citations40
TAKASAKA SHIGEHIRO
2 patentsUS8494378B2Jul 23, 2013
Synchronous optical signal generating device and synchronous optical signal generating method
TAKASAKA SHIGEHIRO8 citations79
US8873898B2Oct 28, 2014
Polarization independent wavelength converter and polarization independent wavelength conversion method
TAKASAKA SHIGEHIRO0 citations37