Inventor · disambiguated record
Etsuko Hayashi
Also filed as: HAYASHI ETSUKO
45 granted patents·1 pending application·673 citations·filing 1996–2010
98Inventor score
Top patents by PatentIndex Score
46 records- 0199US6388801B1Optical amplification apparatus utilizing Raman amplification and controlling method thereofFUJITSU LTD·Filed 2001·Granted May 14, 2002·134 cites·25 claims
- 0298US6624926B1Optical amplifier with pump light source control for raman amplificationFUJITSU LTD·Filed 2000·Granted Sep 23, 2003·92 cites·41 claims
- 0398US6510000B1Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lightsFUJITSU LTD·Filed 2000·Granted Jan 21, 2003·87 cites·57 claims
- 0494US7359112B2Individual band gain equalizer for optical amplifiersFUJITSU LTD·Filed 2006·Granted Apr 15, 2008·20 cites·37 claims
- 0592US6441951B1Optical amplification apparatus using Raman amplificationFUJITSU LTD·Filed 2001·Granted Aug 27, 2002·32 cites·15 claims
- 0691US7813642B2Optical transmission apparatus and method of controlling the sameFUJITSU LTD·Filed 2007·Granted Oct 12, 2010·16 cites·12 claims
- 0791US7715093B2Individual band gain equalizer for optical amplifiersFUJITSU LTD·Filed 2008·Granted May 11, 2010·12 cites·12 claims
- 0889US6738184B2Optical amplifier for amplifying multi-wavelength lightFUJITSU LTD·Filed 2001·Granted May 18, 2004·30 cites·14 claims
- 0989US6577437B2Optical amplification apparatus utilizing Raman amplification and controlling method thereofFUJITSU LTD·Filed 2002·Granted Jun 10, 2003·22 cites·7 claims
- 1087US7362499B2Optical amplifier with pump light source control for Raman amplificationFUJITSU LTD·Filed 2006·Granted Apr 22, 2008·10 cites·7 claims
- 1187US6891661B2Optical amplifier with pump light source control for Raman amplificationFUJITSU LTD·Filed 2003·Granted May 10, 2005·24 cites·19 claims
- 1285US8054455B2Optical amplifier provided with control function of pumping light, and optical transmission system using the sameFUJITSU LTD·Filed 2010·Granted Nov 8, 2011·6 cites·13 claims
- 1382US7843631B2Gain control apparatus, optical transmission apparatus, gain control method for optical amplifier, and wavelength multiplex optical transmission systemFUJITSU LTD·Filed 2007·Granted Nov 30, 2010·9 cites·14 claims
- 1481US7616848B2Optical transmission apparatusFUJITSU LTD·Filed 2007·Granted Nov 10, 2009·8 cites·3 claims
- 1579US6823107B2Method and device for optical amplificationFUJITSU LTD·Filed 2002·Granted Nov 23, 2004·15 cites·22 claims
- 1678US7061669B2Optical apparatus with loss compensation capability and optical amplifier for loss compensationFUJITSU LTD·Filed 2004·Granted Jun 13, 2006·14 cites·14 claims
- 1778US7042636B2Optical amplifier with pump light source control for Raman amplificationFUJITSU LTD·Filed 2004·Granted May 9, 2006·13 cites·1 claims
- 1878US6683712B2Optical amplification apparatus using Raman amplificationFUJITSU LTD·Filed 2002·Granted Jan 27, 2004·13 cites·2 claims
- 1977US7212335B2Apparatus and method for amplification medium performance simulation, and optical amplifierFUJITSU LTD·Filed 2005·Granted May 1, 2007·5 cites·25 claims
- 2077US7119950B2Amplification method and optical amplifier for wavelength division multiplexed signal lightFUJITSU LTD·Filed 2005·Granted Oct 10, 2006·7 cites·18 claims
- 2174US7400441B2Optical amplifier, optical amplification repeater and pump light supply control methodFUJITSU LTD·Filed 2007·Granted Jul 15, 2008·4 cites·13 claims
- 2273US7505197B2Optical amplifier provided with control function of pumping light, and optical transmission system using the sameFUJITSU LTD·Filed 2004·Granted Mar 17, 2009·8 cites·15 claims
- 2373US6873455B2Optical amplification apparatus utilizing raman amplification and controlling method thereofFUJITSU LTD·Filed 2003·Granted Mar 29, 2005·8 cites·33 claims
- 2472US7268936B2Optical amplifier having polarization mode dispersion compensation functionFUJITSU LTD·Filed 2004·Granted Sep 11, 2007·12 cites·18 claims
- 2571US6847478B1Optical amplification apparatus using Raman amplificationFUJITSU LTD·Filed 2003·Granted Jan 25, 2005·7 cites·7 claims
- 2671US6747790B2Optical amplifier for amplifying multi-wavelength lightFUJITSU LTD·Filed 2001·Granted Jun 8, 2004·7 cites·14 claims
- 2770US8116626B2Optical transmission apparatus and optical attenuation amount control methodTAKEYAMA TOMOAKI·Filed 2009·Granted Feb 14, 2012·4 cites·8 claims
- 2870US7127139B2Optical multiplexing method and optical multiplexer, and optical amplifier using sameFUJITSU LTD·Filed 2004·Granted Oct 24, 2006·12 cites·20 claims
- 2968US7529022B2Raman amplifier and wavelength division multiplexing optical communication system, and method of controlling raman amplificationFUJITSU LTD·Filed 2005·Granted May 5, 2009·2 cites·6 claims
- 3065US7180654B2Raman amplifierFUJITSU LTD·Filed 2003·Granted Feb 20, 2007·8 cites·19 claims
- 3164US7072100B2Optical amplifier and gain tilt compensation methodFUJITSU LTD·Filed 2002·Granted Jul 4, 2006·7 cites·34 claims
- 3260US7145718B2Control method of optical fiber amplifier and optical transmission systemFUJITSU LTD·Filed 2004·Granted Dec 5, 2006·5 cites·12 claims
- 3357US7719758B2Optical amplifier provided with control function of pumping light, and optical transmission system using the sameFUJITSU LTD·Filed 2009·Granted May 18, 2010·0 cites·13 claims
- 3457US7688498B2Optical amplifier and optical monitor circuitFUJITSU LTD·Filed 2004·Granted Mar 30, 2010·4 cites·17 claims
- 3556US7394589B2Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lightsFUJITSU LTD·Filed 2002·Granted Jul 1, 2008·3 cites·25 claims
- 3656US6862133B2Raman amplifier and wavelength division multiplexing optical communication system, and method of controlling raman amplificationFUJITSU LTD·Filed 2002·Granted Mar 1, 2005·3 cites·11 claims
- 3755US7751119B2Optical surge suppressive type optical amplifierFUJITSU LTD·Filed 2008·Granted Jul 6, 2010·0 cites·9 claims
- 3852US6741390B2Variable wavelength light source apparatus and optical amplifier using sameFUJITSU LTD·Filed 2003·Granted May 25, 2004·3 cites·11 claims
- 3952US2008007818A1Optical surge suppresive type optical amplifierONAKI MIKI·Filed 2007·Application pending·0 cites
- 4051US7417791B2Optical amplifier for amplifying multi-wavelength lightFUJITSU LTD·Filed 2005·Granted Aug 26, 2008·0 cites·3 claims
- 4148US7729588B2Optical fiber, manufacturing method of the same, and optical amplifierFUJITSU LTD·Filed 2007·Granted Jun 1, 2010·0 cites·4 claims
- 4248US6891662B2Optical amplifier and method for amplifying wavelength multiplexed transmission signal lightFUJITSU LTD·Filed 2001·Granted May 10, 2005·2 cites·28 claims
- 4344US7551347B2Optical amplification characteristics simulation apparatus and optical amplification characteristics simulation methodFUJITSU LTD·Filed 2007·Granted Jun 23, 2009·0 cites·17 claims
- 4442US7095553B2Optical amplifier and controlling method for Raman amplifierFUJITSU LTD·Filed 2004·Granted Aug 22, 2006·0 cites·25 claims
- 4540US8064130B2Optical amplifierNISHIHARA MASATO·Filed 2003·Granted Nov 22, 2011·0 cites·10 claims
- 4635US5856882AOptical fibers and optical fiber amplifiersHOYA CORP·Filed 1996·Granted Jan 5, 1999·5 cites·23 claims
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