Inventor · disambiguated record
Norifumi Shukunami
Also filed as: SHUKUNAMI NORIFUMI
54 granted patents·5 pending applications·566 citations·filing 1995–2022
98Inventor score
Files withFUJITSU LTD45SHUKUNAMI NORIFUMI6NAKAMURA KENTARO2YUKI MASAHIRO2FUJITSU TELECOM NETWORKS LTD1
Top patents by PatentIndex Score
59 records- 0191US5764404AWavelength-division-multiplexing optical amplifierFUJITSU LTD·Filed 1995·Granted Jun 9, 1998·99 cites·9 claims
- 0290US7924499B2Gain and signal level adjustments of cascaded optical amplifiersFUJITSU LTD·Filed 2010·Granted Apr 12, 2011·8 cites·35 claims
- 0389US6603596B2Gain and signal level adjustments of cascaded optical amplifiersFUJITSU LTD·Filed 1999·Granted Aug 5, 2003·55 cites·94 claims
- 0487US11870553B2Fiber-optic communication apparatus, fiber-optic communication system, and optical power control methodFUJITSU LTD·Filed 2022·Granted Jan 9, 2024·1 cites·16 claims
- 0587US7061666B2Gain and signal level adjustments of cascaded optical amplifiersFUJITSU LTD·Filed 2003·Granted Jun 13, 2006·18 cites·24 claims
- 0687US5778129ADoped optical fiber having core and clad structure for increasing the amplification band of an optical amplifier using the optical fiberFUJITSU LTD·Filed 1996·Granted Jul 7, 1998·74 cites·58 claims
- 0785US8655170B2OSNR monitor device and OSNR measurement deviceSHUKUNAMI NORIFUMI·Filed 2010·Granted Feb 18, 2014·8 cites·15 claims
- 0881US6529314B1Method and apparatus using four wave mixing for optical wavelength conversionFUJITSU LTD·Filed 1999·Granted Mar 4, 2003·55 cites·86 claims
- 0980US8971700B2Bidirectional monitor module, optical module, optical add-drop multiplexer, and optical systemFUJITSU LTD·Filed 2013·Granted Mar 3, 2015·4 cites·8 claims
- 1080US7692849B2Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using sameFUJITSU LTD·Filed 2007·Granted Apr 6, 2010·8 cites·12 claims
- 1179US8547629B2Gain and signal level adjustments of cascaded optical amplifiersINAGAKI SHINYA·Filed 2011·Granted Oct 1, 2013·3 cites·8 claims
- 1278US6903324B2Optical amplifier amplifying wavelength multiplexed light, and wavelength multiplexed light communications systemFUJITSU LTD·Filed 2002·Granted Jun 7, 2005·19 cites·17 claims
- 1375US9742500B2Optical transmission apparatus and optical signal processing methodFUJITSU LTD·Filed 2016·Granted Aug 22, 2017·3 cites·6 claims
- 1475US7209284B2Optical amplifier using reflection-type variable optical attenuator for feedbackFUJITSU LTD·Filed 2005·Granted Apr 24, 2007·5 cites·5 claims
- 1575US5745283AMethod and apparatus for controlling optical amplifier used for optically amplifying wavelength-division multiplexed signalFUJITSU LTD·Filed 1996·Granted Apr 28, 1998·49 cites·26 claims
- 1674US10634974B2Wavelength converter, wavelength conversion method, and transmission deviceFUJITSU LTD·Filed 2019·Granted Apr 28, 2020·2 cites·12 claims
- 1774US7899296B2Optical fiber reelFUJITSU LTD·Filed 2008·Granted Mar 1, 2011·6 cites·41 claims
- 1873US8983298B2Optical channel monitorFUJITSU LTD·Filed 2013·Granted Mar 17, 2015·3 cites·8 claims
- 1972US9065570B2Optical amplifier with feedback to obtain set gain and gain tiltSHUKUNAMI NORIFUMI·Filed 2011·Granted Jun 23, 2015·3 cites·9 claims
- 2071US9438343B2Transmitting device, communication system, and method for transmission level controlFUJITSU LTD·Filed 2013·Granted Sep 6, 2016·2 cites·16 claims
- 2171US9300426B2Transmission apparatus, transmission system, and method of controlling average optical input powerFUJITSU LTD·Filed 2014·Granted Mar 29, 2016·2 cites·20 claims
- 2271US6747790B2Optical amplifier for amplifying multi-wavelength lightFUJITSU LTD·Filed 2001·Granted Jun 8, 2004·7 cites·14 claims
- 2368US7296940B2Optical fiber connecting portion structure and light monitor apparatusFUJITSU LTD·Filed 2006·Granted Nov 20, 2007·4 cites·15 claims
- 2468US6310717B1Optical amplifier and fiber module for optical amplificationFUJITSU LTD·Filed 1999·Granted Oct 30, 2001·30 cites·31 claims
- 2567US8861965B2Optical transmission apparatusNAKAMURA KENTARO·Filed 2011·Granted Oct 14, 2014·2 cites·12 claims
- 2667US8134775B2Raman amplifier with signal modulated before stimulated brillouin scattering occursSUZUKI YUICHI·Filed 2009·Granted Mar 13, 2012·2 cites·11 claims
- 2767US6738182B2Optical fiber amplifierFUJITSU LTD·Filed 2001·Granted May 18, 2004·8 cites·38 claims
- 2865US9699531B2Switchable optical amplifier and optical transmission apparatusFUJITSU LTD·Filed 2015·Granted Jul 4, 2017·1 cites·6 claims
- 2965US9520694B2Optical amplifier with loss adjustment unit based on gainFUJITSU LTD·Filed 2015·Granted Dec 13, 2016·1 cites·4 claims
- 3065US9031418B2Communication system, measuring apparatus, transmitting apparatus, and measurement methodYUKI MASAHIRO·Filed 2011·Granted May 12, 2015·2 cites·17 claims
- 3165US8687982B2OSNR measuring device and optical communication systemNAKAMURA KENTARO·Filed 2011·Granted Apr 1, 2014·2 cites·13 claims
- 3265US7969648B2Gain and signal level adjustments of cascaded optical amplifiersFUJITSU LTD·Filed 2006·Granted Jun 28, 2011·1 cites·29 claims
- 3363US2023187891A1Optical amplification apparatus and optical amplification systemFUJITSU LTD·Filed 2022·Application pending·0 cites
- 3462US5861973AOptical amplifier for collectively amplifying optical signals having a plurality of multiplexed wavelengthsFUJITSU LTD·Filed 1996·Granted Jan 19, 1999·24 cites·26 claims
- 3561US7929201B2Multistage optical amplifier with gain control using pump ratioFUJITSU LTD·Filed 2008·Granted Apr 19, 2011·2 cites·7 claims
- 3660US8068275B2Method for measuring nonlinear optical propertiesSHUKUNAMI NORIFUMI·Filed 2010·Granted Nov 29, 2011·1 cites·4 claims
- 3759US9444572B2Transmission device and transmission methodFUJITSU LTD·Filed 2013·Granted Sep 13, 2016·1 cites·9 claims
- 3855US11855703B2Optical coherent transceiver and filter adjustment methodFUJITSU LTD·Filed 2022·Granted Dec 26, 2023·0 cites·8 claims
- 3954US11018762B2Transmission device, transmission system, and transmission methodFUJITSU LTD·Filed 2020·Granted May 25, 2021·0 cites·15 claims
- 4053US11509394B2Controller and control method for Raman amplifierFUJITSU LTD·Filed 2021·Granted Nov 22, 2022·0 cites·8 claims
- 4153US5970198AOptically amplifying fiber and optical fiber amplifierFUJITSU LTD·Filed 1998·Granted Oct 19, 1999·16 cites·9 claims
- 4252US11171768B2Transmission device, reception device, transmission method, and reception methodFUJITSU LTD·Filed 2020·Granted Nov 9, 2021·0 cites·11 claims
- 4351US7417791B2Optical amplifier for amplifying multi-wavelength lightFUJITSU LTD·Filed 2005·Granted Aug 26, 2008·0 cites·3 claims
- 4451US7400444B2Optical amplifier and control method for optical amplifierFUJITSU LTD·Filed 2004·Granted Jul 15, 2008·3 cites·4 claims
- 4551US6452720B1Light source apparatus, optical amplifier and optical communication systemFUJITSU LTD·Filed 1997·Granted Sep 17, 2002·13 cites·16 claims
- 4650US9531496B2Optical transmission device and optical transmission methodFUJITSU LTD·Filed 2014·Granted Dec 27, 2016·0 cites·6 claims
- 4749US10608775B2Optical transmission apparatus, optical transmission method, and optical transmission systemFUJITSU LTD·Filed 2019·Granted Mar 31, 2020·0 cites·10 claims
- 4849US6856455B2Light source apparatus, optical amplifier and optical communication systemFUJITSU LTD·Filed 2002·Granted Feb 15, 2005·1 cites·13 claims
- 4948US6891662B2Optical amplifier and method for amplifying wavelength multiplexed transmission signal lightFUJITSU LTD·Filed 2001·Granted May 10, 2005·2 cites·28 claims
- 5043US9166679B2Optical amplification apparatus, method for controlling same, optical receiver station, and optical transmission systemSHUKUNAMI NORIFUMI·Filed 2012·Granted Oct 20, 2015·0 cites·17 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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