Inventor · disambiguated record
Naomasa Shimojoh
Also filed as: SHIMOJOH NAOMASA
9 granted patents·1 pending application·185 citations·filing 1997–2002
90Inventor score
Files withFUJITSU LTD9
Top patents by PatentIndex Score
10 records- 0193US6882466B1Optical amplifierFUJITSU LTD·Filed 2000·Granted Apr 19, 2005·46 cites·31 claims
- 0285US6606188B2Optical repeater using raman amplification, wavelength division multiplexed light transmission system, excitation light supply method and excitation light control method for raman amplificationFUJITSU LTD·Filed 2001·Granted Aug 12, 2003·34 cites·18 claims
- 0382US6930823B2Optical transmission method and optical transmission system utilizing Raman amplificationFUJITSU LTD·Filed 2001·Granted Aug 16, 2005·24 cites·27 claims
- 0477US6344914B1Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifierFUJITSU LTD·Filed 1997·Granted Feb 5, 2002·38 cites·56 claims
- 0570US6480328B2Optical amplifier and optical amplification method for amplifying wavelength division multiplexed signal lightFUJITSU LTD·Filed 2000·Granted Nov 12, 2002·13 cites·16 claims
- 0665US6807376B2Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifierFUJITSU LTD·Filed 2001·Granted Oct 19, 2004·7 cites·7 claims
- 0760US6417960B1Method of equalizing gain utilizing asymmetrical loss-wavelength characteristics and optical amplifying apparatus using sameFUJITSU LTD·Filed 2000·Granted Jul 9, 2002·6 cites·16 claims
- 0845US6061172AActive optical fiber and optical fiber amplifierFUJITSU LTD·Filed 1998·Granted May 9, 2000·11 cites·46 claims
- 0939US2003081285A1Transmission device having wavelength-band-specific optical amplifiers provided commonly for all transmission linesFiled 2002·Application pending·0 cites
- 1035US6268955B1Optical amplifier and wave length division multiplexed light transmission systemFUJITSU LTD·Filed 1999·Granted Jul 31, 2001·6 cites·11 claims
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