Inventor · disambiguated record
Yun Chur Chung
Also filed as: CHUNG YUN C · CHUNG YUN CHUR
35 granted patents·5 pending applications·793 citations·filing 1989–2020
98Inventor score
Files withKOREA ADVANCED INST SCI & TECH14AT & T BELL LAB5KOREA ADVANCED INST SCIENCE AN4KOREA ELECTRONICS TELECOMM3KWON OH-KEE3
Top patents by PatentIndex Score
40 records- 0198US6895185B1Multi-purpose optical fiber access networkKOREA ADVANCED INST SCI & TECH·Filed 2000·Granted May 17, 2005·164 cites·6 claims
- 0292US6433864B1Apparatus for monitoring optical signal-to-noise ratio of optical signals in WDM optical transmission systemKOREA ADVANCED INST SCI & TECH·Filed 2000·Granted Aug 13, 2002·41 cites·18 claims
- 0391US5212584ATunable etalon filterAT & T BELL LAB·Filed 1992·Granted May 18, 1993·104 cites·19 claims
- 0485US5132976AElectrically tunable fiber ring laserAT & T BELL LAB·Filed 1991·Granted Jul 21, 1992·48 cites·18 claims
- 0582US7558477B2Communication recovering system for wavelength division multiplexed passive optical networkKOREA ADVANCED INST SCI & TECH·Filed 2005·Granted Jul 7, 2009·9 cites·2 claims
- 0682US6548806B1Apparatus for monitoring frequency of WDM signals using pilot toneKOREA ADVANCED INST SCIENCE AN·Filed 2000·Granted Apr 15, 2003·20 cites·10 claims
- 0779US7149428B2OSNR monitoring method and apparatus using tunable optical bandpass filter and polarization nulling methodTERALINK COMMUNICATIONS INC·Filed 2003·Granted Dec 12, 2006·25 cites·23 claims
- 0878US6597482B1Multiplexing/demultiplexing apparatus for wavelength division multiplexed system and wavelength division multiplexed passive optical subscriber networks using the same apparatusKOREA ADVANCED INST SCI & TECH·Filed 1999·Granted Jul 22, 2003·54 cites·12 claims
- 0977US7542673B2Fault localization apparatus for optical line in wavelength division multiplexed passive optical networkKOREA ADVANCED INST SCI & TECH·Filed 2005·Granted Jun 2, 2009·7 cites·9 claims
- 1075US5440417ASystem for spectrum-sliced fiber amplifier light for multi-channel wavelength-division-multiplexed applicationsAT & T CORP·Filed 1993·Granted Aug 8, 1995·51 cites·20 claims
- 1174US8509613B2Monitoring of optical transmission systems based on cross-correlation operationCHUNG YUN CHUR·Filed 2008·Granted Aug 13, 2013·8 cites·13 claims
- 1274US6349103B1Cold-start wavelength-division-multiplexed optical transmission systemSAMSUNG ELECTRONICS CO LTD·Filed 1999·Granted Feb 19, 2002·52 cites·22 claims
- 1373US9036969B2Spot size converters and methods of manufacturing the sameKWON OH KEE·Filed 2012·Granted May 19, 2015·3 cites·13 claims
- 1473US6813021B2Method and apparatus for monitoring optical signal-to-noise ratio (OSNR) using polarization-nulling methodTERALINK COMMUNICATIONS INC·Filed 2001·Granted Nov 2, 2004·21 cites·5 claims
- 1572US6538784B1Multicast-capable optical cross-connect with layered modularityKOREA ADVANCED INST SCIENCE AN·Filed 1999·Granted Mar 25, 2003·38 cites·20 claims
- 1672US6532106B2All-optical gain controlled bidirectional add/drop optical amplifierKOREA INST SCI & TECH·Filed 2001·Granted Mar 11, 2003·12 cites·3 claims
- 1771US7848643B2Communication recovering system for wavelength division multiplexed passive optical networkKOREA ADVANCED INST SCI & TECH·Filed 2009·Granted Dec 7, 2010·4 cites·1 claims
- 1867US6188509B1Simple bidirectional add/drop amplifier module based on a single multiplexerKOREA ADVANCED INST SCIENCE AN·Filed 1998·Granted Feb 13, 2001·33 cites·12 claims
- 1964US7881613B2Wavelength tracking apparatus and method in WDM-PON systemKOREA ELECTRONICS TELECOMM·Filed 2006·Granted Feb 1, 2011·3 cites·4 claims
- 2063US5181210AElectrically tunable fiber ring laserAT & T BELL LAB·Filed 1992·Granted Jan 19, 1993·19 cites·4 claims
- 2162US7257324B2Apparatus for monitoring optical signal-to-noise ratioKOREA ADVANCED INSTITUE OF SCI·Filed 2003·Granted Aug 14, 2007·7 cites·8 claims
- 2261US4926429ALightwave communication system having sources independently synchronized to an absolute frequency standardAT & T BELL LAB·Filed 1989·Granted May 15, 1990·23 cites·11 claims
- 2360US7177541B2OSNR monitoring method and apparatus for the optical networksTERALINK COMMUNICATIONS INC·Filed 2001·Granted Feb 13, 2007·6 cites·7 claims
- 2460US4932030AFrequency stabilization of long wavelength semiconductor laser via optogalvanic effectAT & T BELL LAB·Filed 1989·Granted Jun 5, 1990·12 cites·5 claims
- 2557US7050658B2Method and apparatus for reducing system deterioration caused by polarization effectsKOREA ADVANCED INST SCI & TECH·Filed 2004·Granted May 23, 2006·4 cites·9 claims
- 2656US5434877ASynchronized etalon filtersAT & T CORP·Filed 1994·Granted Jul 18, 1995·18 cites·23 claims
- 2755US2015110144A1Distributed feedback-laser diodesKOREA ELECTRONICS TELECOMM·Filed 2014·Application pending·0 cites
- 2852US8937980B2Distributed feedback-laser diodesKWON OH KEE·Filed 2012·Granted Jan 20, 2015·0 cites·19 claims
- 2951US12199670B2Optimal operation method of high-frequency phase dithering technique for compensating for interference noise in analog-optical transmission-based mobile fronthaul network, and transmitter using sameKOREA ADVANCED INST SCI & TECH·Filed 2020·Granted Jan 14, 2025·0 cites·13 claims
- 3049US6813425B1Fiber optic cable for increased transmission capacity and wavelength division multiplexing optical transmission system using the sameLG CABLE LTD AND KOREA ADVANCE·Filed 2000·Granted Nov 2, 2004·2 cites·54 claims
- 3144US2004179844A1Wavelength-division-multiplexed metro optical networkKOREA ADVANCED INST SCI & TECH·Filed 2003·Application pending·0 cites
- 3242US11799556B2Optical-time-division-multiplexed transmission system using sinusoidally modulated optical signal as input pulse sourceKOREA ADVANCED INST SCI & TECH·Filed 2020·Granted Oct 24, 2023·0 cites·15 claims
- 3340US9154226B2Optical signal quality monitoring method and apparatus using a software-based synchronized amplitude histogramKOREA ADVANCED INST SCI & TECH·Filed 2013·Granted Oct 6, 2015·0 cites·12 claims
- 3440US7809227B2Optical fiber, and optical access network, local area network and optical parts for communication, which use the optical fiberKOREA ADVANCED INST SCI & TECH·Filed 2005·Granted Oct 5, 2010·0 cites·18 claims
- 3540US2013003771A1Distributed feedback laser diode having asymmetric coupling coefficient and manufacturing method thereofKOREA ELECTRONICS TELECOMM·Filed 2012·Application pending·0 cites
- 3638US2013148975A1Multichannel transmitter optical moduleKWON OH KEE·Filed 2012·Application pending·0 cites
- 3732US6501573B1Apparatus and method for monitoring the qualities of optical signal using clock amplitudeKOREA ADVANCED INST SCIENCE AN·Filed 1999·Granted Dec 31, 2002·5 cites·6 claims
- 3832US2008187314A1Reflective semiconductor optical amplifier-based optical access network system having improved transmission qualityKOREA ADVANCED OF SCIENCE AND·Filed 2007·Application pending·0 cites
- 3931US9819417B2Method and apparatus for generating optical polar return-to-zero amplitude modulation signal using reflective semiconductor optical amplifier and wavelength-division-multiplexed passive optical network system using the sameKOREA ADVANCED INST SCI & TECH·Filed 2016·Granted Nov 14, 2017·0 cites·10 claims
- 4030US5974208ASliding-frequency guiding filter for soliton transmissionKOREA ADVANCED INST SCI & TECH·Filed 1997·Granted Oct 26, 1999·0 cites·15 claims
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