Inventor · disambiguated record
Chung-En Zah
Also filed as: ZAH CHUNG-EN
56 granted patents·9 pending applications·1,321 citations·filing 1989–2021
98Inventor score
Files withCORNING INC27THORLABS QUANTUM ELECTRONICS INC10BELL COMMUNICATIONS RES6BHAT RAJARAM6CANEAU CATHERINE G2
Top patents by PatentIndex Score
65 records- 0198US9948063B2Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stagesTHORLABS QUANTUM ELECTRONICS INC·Filed 2016·Granted Apr 17, 2018·32 cites·4 claims
- 0297US7388892B2System and method for optically powering a remote network componentCORNING INC·Filed 2004·Granted Jun 17, 2008·122 cites·22 claims
- 0396US9601901B2Passive waveguide structure with alternating GaInAs/AlInAs layers for mid-infrared optoelectronic devicesTHORLABS QUANTUM ELECTRONICS INC·Filed 2015·Granted Mar 21, 2017·12 cites·13 claims
- 0494US6295308B1Wavelength-locked external cavity lasers with an integrated modulatorCORNING INC·Filed 1999·Granted Sep 25, 2001·115 cites·20 claims
- 0593US6434175B1Multiwavelength distributed bragg reflector phased array laserCORNING INC·Filed 1999·Granted Aug 13, 2002·106 cites·20 claims
- 0693US5612968ARedundant multi-wavelength laser arraysBELL COMMUNICATIONS RES·Filed 1995·Granted Mar 18, 1997·143 cites·10 claims
- 0792US8379684B1Hole blocking layers in non-polar and semi-polar green light emitting devicesCORNING INC·Filed 2011·Granted Feb 19, 2013·15 cites·20 claims
- 0892US5946331AIntegrated multi-wavelength transmitterTELLIUM INC·Filed 1998·Granted Aug 31, 1999·109 cites·12 claims
- 0992US5805755ASelf-aligned transition from ridge to buried heterostructure waveguide, especially for multi-wavelength laser array integrationTELLIUM INC·Filed 1996·Granted Sep 8, 1998·108 cites·24 claims
- 1092US5117469APolarization-dependent and polarization-diversified opto-electronic devices using a strained quantum wellBELL COMMUNICATIONS RES·Filed 1991·Granted May 26, 1992·128 cites·14 claims
- 1191US7486709B2Semiconductor laser micro-heating element structureCORNING INC·Filed 2006·Granted Feb 3, 2009·20 cites·18 claims
- 1290US7480317B2Thermal compensation in semiconductor lasersCORNING INC·Filed 2006·Granted Jan 20, 2009·14 cites·19 claims
- 1390US5381434AHigh-temperature, uncooled diode laserBELL COMMUNICATIONS RES·Filed 1993·Granted Jan 10, 1995·65 cites·15 claims
- 1485US7505492B2Alignment of lasing wavelength with wavelength conversion peak using modulated wavelength control signalCORNING INC·Filed 2007·Granted Mar 17, 2009·10 cites·20 claims
- 1585US6618409B1Passivation of semiconductor laser facetsCORNING INC·Filed 2000·Granted Sep 9, 2003·83 cites·37 claims
- 1683US9172211B2Heating elements for multi-wavelength DBR laserKUKSENKOV DMITRI VLADISLAVOVICH·Filed 2011·Granted Oct 27, 2015·7 cites·20 claims
- 1783US8358673B2Strain balanced laser diodeCORNING INC·Filed 2011·Granted Jan 22, 2013·6 cites·23 claims
- 1883US4965525AAngled-facet flared-waveguide traveling-wave laser amplifiersBELL COMMUNICATIONS RES·Filed 1989·Granted Oct 23, 1990·29 cites·12 claims
- 1982US9042416B1High-power low-loss GRINSCH laserCORNING INC·Filed 2013·Granted May 26, 2015·7 cites·17 claims
- 2081US8121169B2Split control of front and rear DBR grating portionsNGUYEN HONG KY·Filed 2009·Granted Feb 21, 2012·12 cites·9 claims
- 2180US9231368B2Passive waveguide structure with alternating GaInAs/AlInAs layers for mid-infrared optoelectronic devicesTHORLABS QUANTUM ELECTRONICS INC·Filed 2015·Granted Jan 5, 2016·2 cites·10 claims
- 2279US7483458B2Wavelength control in semiconductor lasersCORNING INC·Filed 2006·Granted Jan 27, 2009·6 cites·30 claims
- 2375US7981591B2Semiconductor buried grating fabrication methodCORNING INC·Filed 2008·Granted Jul 19, 2011·10 cites·24 claims
- 2473US6501260B1Bar testerCORNING INC·Filed 2000·Granted Dec 31, 2002·16 cites·8 claims
- 2572US8897329B2Group III nitride-based green-laser diodes and waveguide structures thereofSIZOV DMITRY·Filed 2010·Granted Nov 25, 2014·4 cites·24 claims
- 2672US7983317B2MQW laser structure comprising plural MQW regionsCORNING INC·Filed 2008·Granted Jul 19, 2011·3 cites·12 claims
- 2770US6075592AFiber-optics based micro-photoluminescence systemTELCORDIA TECH INC·Filed 1998·Granted Jun 13, 2000·33 cites·4 claims
- 2869US7615389B2GaN lasers on ALN substrates and methods of fabricationCORNING INC·Filed 2007·Granted Nov 10, 2009·4 cites·20 claims
- 2969US5541949AStrained algainas quantum-well diode lasersBELL COMMUNICATIONS RES·Filed 1995·Granted Jul 30, 1996·30 cites·20 claims
- 3068US9685766B2Multiwavelength quantum cascade laser via growth of different active and passive coresTHORLABS QUANTUM ELECTRONICS INC·Filed 2015·Granted Jun 20, 2017·1 cites·7 claims
- 3168US7965752B1Native green laser semiconductor devicesCORNING INC·Filed 2009·Granted Jun 21, 2011·3 cites·23 claims
- 3268US6304587B1Buried ridge semiconductor laser with aluminum-free confinement layerCORNING INC·Filed 1999·Granted Oct 16, 2001·29 cites·31 claims
- 3364US7502394B2System and method for modulating a semiconductor laserCORNING INC·Filed 2005·Granted Mar 10, 2009·2 cites·23 claims
- 3464US7400659B2Method and device for performing DBR laser wavelength modulation free of thermal effectCORNING INC·Filed 2005·Granted Jul 15, 2008·2 cites·20 claims
- 3562US8217498B2Gallium nitride semiconductor device on SOI and process for making sameBHAT RAJARAM·Filed 2007·Granted Jul 10, 2012·2 cites·9 claims
- 3662US5065200AGeometry dependent doping and electronic devices produced therebyBELL COMMUNICATIONS RES·Filed 1989·Granted Nov 12, 1991·27 cites·11 claims
- 3759US12132292B2Laser deviceFOCUSLIGHT TECH INC·Filed 2021·Granted Oct 29, 2024·0 cites·11 claims
- 3859US9547124B2Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stagesTHORLABS QUANTUM ELECTRONICS INC·Filed 2013·Granted Jan 17, 2017·0 cites·16 claims
- 3959US7567595B2Laser source with interdigital heater electrodes and underlying current confinement layerCORNING INC·Filed 2007·Granted Jul 28, 2009·1 cites·24 claims
- 4057US10431957B2Multiwavelength quantum cascade laser via growth of different active and passive coresTHORLABS QUANTUM ELECTRONICS INC·Filed 2017·Granted Oct 1, 2019·0 cites·13 claims
- 4157US9917421B2P-type isolation regions adjacent to semiconductor laser facetsCANEAU CATHERINE G·Filed 2011·Granted Mar 13, 2018·1 cites·22 claims
- 4256US9865990B2Monolithic wide wavelength tunable mid-IR laser sourcesTHORLABS QUANTUM ELECTRONICS INC·Filed 2016·Granted Jan 9, 2018·0 cites·1 claims
- 4354US9385509B2Monolithic wide wavelength tunable mid-IR laser sourcesTHORLABS QUANTUM ELECTRONICS INC·Filed 2015·Granted Jul 5, 2016·0 cites·20 claims
- 4452US2011072886A1Gas Sensor Based On Photoacoustic DetectionCANEAU CATHERINE GENEVIEVE·Filed 2009·Application pending·0 cites
- 4551US9455551B2Mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stagesTHORLABS QUANTUM ELECTRONICS INC·Filed 2013·Granted Sep 27, 2016·0 cites·17 claims
- 4649US9548590B2Quantum cascade laser design with stepped well active regionCORNING INC·Filed 2012·Granted Jan 17, 2017·0 cites·20 claims
- 4748US10811845B2Surface emitting multiwavelength distributed-feedback concentric ring lasersTHORLABS QUANTUM ELECTRONICS INC·Filed 2013·Granted Oct 20, 2020·0 cites·13 claims
- 4848US8121165B2MQW laser structure comprising plural MQW regionsBHAT RAJARAM·Filed 2011·Granted Feb 21, 2012·0 cites·11 claims
- 4946US2012252191A1Gallium nitride semiconductor device on soi and process for making sameBHAT RAJARAM·Filed 2012·Application pending·0 cites
- 5045US7072376B2Method of manufacturing an InP based vertical cavity surface emitting laser and device produced therefromCORNING INC·Filed 2004·Granted Jul 4, 2006·1 cites·24 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →