Inventor · disambiguated record
Cechan Tian
Also filed as: TIAN CECHAN
32 granted patents·10 pending applications·211 citations·filing 2002–2009
97Inventor score
Top patents by PatentIndex Score
42 records- 0188US7120360B2System and method for protecting traffic in a hubbed optical ring networkFUJITSU LTD·Filed 2005·Granted Oct 10, 2006·13 cites·17 claims
- 0288US7075712B2Combining and distributing amplifiers for optical network and methodFUJITSU LTD·Filed 2002·Granted Jul 11, 2006·32 cites·37 claims
- 0384US7912378B2Modulating a signal using a fractional phase modulatorFUJITSU LTD·Filed 2007·Granted Mar 22, 2011·12 cites·23 claims
- 0483US7231148B2Flexible open ring optical network and methodFUJITSU LTD·Filed 2002·Granted Jun 12, 2007·16 cites·28 claims
- 0581US7668466B2Free space demodulator for demodulating a signalFUJITSU LTD·Filed 2006·Granted Feb 23, 2010·7 cites·20 claims
- 0681US7650076B2Dynamic blocking of token-controlled data transmissions in communication networksFUJITSU LTD·Filed 2005·Granted Jan 19, 2010·8 cites·44 claims
- 0781US6690508B2Control system and method for an optical amplifierFUJITSU NETWORK COMMUNICATIONS·Filed 2002·Granted Feb 10, 2004·22 cites·38 claims
- 0879US7466877B2Monitoring modulation alignment variation using photon absorptionFUJITSU LTD·Filed 2005·Granted Dec 16, 2008·5 cites·19 claims
- 0978US7379235B2Reducing polarization dependence of a wavelength dispersion variation monitorFUJITSU LTD·Filed 2005·Granted May 27, 2008·7 cites·19 claims
- 1077US7539360B2Monitoring modulator bias using photon absorptionFUJITSU LTD·Filed 2005·Granted May 26, 2009·4 cites·15 claims
- 1176US7369765B2Optical network with selective mode switchingFUJITSU LTD·Filed 2004·Granted May 6, 2008·12 cites·21 claims
- 1274US7860402B2Modulating a signal according to 2n-PSK modulationFUJITSU LTD·Filed 2007·Granted Dec 28, 2010·5 cites·20 claims
- 1371US7603035B2Method and system for a data centric architecture in an optical networkFUJITSU LTD·Filed 2004·Granted Oct 13, 2009·9 cites·20 claims
- 1470US7085496B2Passive add/drop amplifier for optical networks and methodFUJITSU LTD·Filed 2002·Granted Aug 1, 2006·10 cites·21 claims
- 1569US7027210B2Method and system for determining gain for an optical signalFUJITSU LTD·Filed 2003·Granted Apr 11, 2006·9 cites·13 claims
- 1667US7254292B2Directing optical channels using a reflective deviceFUJITSU LTD·Filed 2004·Granted Aug 7, 2007·8 cites·11 claims
- 1766US7970278B2Flexible open ring optical network and methodFUJITSU LTD·Filed 2007·Granted Jun 28, 2011·2 cites·11 claims
- 1866US7283750B2System and method for setting a tunable filter in an optical networkFUJITSU LTD·Filed 2004·Granted Oct 16, 2007·6 cites·23 claims
- 1966US7006282B2Control system and method for an optical amplifierFUJITSU LTD·Filed 2003·Granted Feb 28, 2006·8 cites·15 claims
- 2060US8218975B2Free-space DQPSK demodulatorTIAN CECHAN·Filed 2009·Granted Jul 10, 2012·2 cites·19 claims
- 2159US7653124B2Monitoring differential phase-shifted keying demodulationFUJITSU LTD·Filed 2006·Granted Jan 26, 2010·1 cites·22 claims
- 2259US7076163B2Method and system for testing during operation of an open ring optical networkFUJITSU LTD·Filed 2002·Granted Jul 11, 2006·4 cites·34 claims
- 2358US7305184B2Method and system for management of directly connected optical componentsFUJITSU LTD·Filed 2003·Granted Dec 4, 2007·3 cites·14 claims
- 2457US7826743B2Optical ring network for extended broadcastingFUJITSU LTD·Filed 2004·Granted Nov 2, 2010·3 cites·24 claims
- 2556US7801393B2Monitoring modulator bias using photon absorptionFUJITSU LTD·Filed 2009·Granted Sep 21, 2010·0 cites·6 claims
- 2651US7009761B2Power tilt compensation using automatic power balance controlFUJITSU LTD·Filed 2003·Granted Mar 7, 2006·2 cites·20 claims
- 2750US7957644B2Flexible open ring optical network and methodFUJITSU LTD·Filed 2007·Granted Jun 7, 2011·0 cites·7 claims
- 2849US7400440B2Method and system for determining gain for an optical signalFUJITSU LTD·Filed 2006·Granted Jul 15, 2008·0 cites·9 claims
- 2949US7116905B2Method and system for control signaling in an open ring optical networkFUJITSU LTD·Filed 2002·Granted Oct 3, 2006·1 cites·25 claims
- 3048US2007217790A1Directing Optical Channels Using a Reflective DeviceFUJITSU LTD·Filed 2007·Application pending·0 cites
- 3146US7664391B2Method and system for shared optical regenerationFUJITSU LTD·Filed 2004·Granted Feb 16, 2010·0 cites·13 claims
- 3245US7650083B2Demodulating a signal by performing consecutive beam splittingFUJITSU LTD·Filed 2006·Granted Jan 19, 2010·0 cites·24 claims
- 3344US7057149B2Method and system for controlling a secondary amplifier with a primary amplifier in an optical networkFUJITSU LTD·Filed 2003·Granted Jun 6, 2006·0 cites·12 claims
- 3444US2005196169A1System and method for communicating traffic between optical ringsFUJITSU LTD·Filed 2004·Application pending·0 cites
- 3544US2005185959A1Photonic data storage networkFUJITSU LTD·Filed 2004·Application pending·0 cites
- 3644US2005095001A1Method and system for increasing network capacity in an optical networkFUJITSU LTD·Filed 2003·Application pending·0 cites
- 3742US2008002994A1Demodulating a signal using a 1 x m couplerFUJITSU LTD·Filed 2006·Application pending·0 cites
- 3842US2004052530A1Optical network with distributed sub-band rejectionsFiled 2002·Application pending·0 cites
- 3941US2007166033A1Analyzing the quality of an optical waveformFUJITSU LTD·Filed 2006·Application pending·0 cites
- 4040US2006188255A1Monitoring wavelength dispersion variation using photon absorptionFUJITSU LTD·Filed 2005·Application pending·0 cites
- 4139US2006133803A1Method and system for shared optical protectionTIAN CECHAN·Filed 2004·Application pending·0 cites
- 4239US2006216029A1Method and system for improving upstream efficiency in extended broadcasting networksFUJITSU LTD·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →