Inventor · disambiguated record
Kok-Wai Chang
Also filed as: CHANG KOK W · CHANG KOK-WAI
55 granted patents·4 pending applications·1,467 citations·filing 1986–2009
99Inventor score
Files withHEWLETT PACKARD CO24JDS UNIPHASE CORP21E TEK DYNAMICS INC4JDS UNIPHASE INC4AGILENT TECHNOLOGIES INC1
Top patents by PatentIndex Score
59 records- 0197US5699462ATotal internal reflection optical switches employing thermal activationHEWLETT PACKARD CO·Filed 1996·Granted Dec 16, 1997·216 cites·27 claims
- 0295US5436925AColliding pulse mode-locked fiber ring laser using a semiconductor saturable absorberHEWLETT PACKARD CO·Filed 1994·Granted Jul 25, 1995·107 cites·21 claims
- 0391US6301046B1Interleaver/deinterleavers causing little or no dispersion of optical signalsJDS UNIPHASE CORP·Filed 2000·Granted Oct 9, 2001·57 cites·37 claims
- 0490US5960131ASwitching element having an expanding waveguide coreHEWLETT PACKARD CO·Filed 1998·Granted Sep 28, 1999·100 cites·19 claims
- 0589US8125704B2Systems and methods for controlling a pulsed laser by combining laser signalsMIELKE MICHAEL M·Filed 2008·Granted Feb 28, 2012·21 cites·20 claims
- 0689US5448579APolarization independent picosecond fiber laserHEWLETT PACKARD CO·Filed 1993·Granted Sep 5, 1995·70 cites·13 claims
- 0786US5446578APolarization preserving optical isolatorHEWLETT PACKARD CO·Filed 1989·Granted Aug 29, 1995·53 cites·20 claims
- 0882US5734763ACompact two-by-n optical components based on bierfringent walk-off crystalsHEWLETT PACKARD CO·Filed 1996·Granted Mar 31, 1998·60 cites·30 claims
- 0982US4974944AOptical nonreciprocal deviceHEWLETT PACKARD CO·Filed 1988·Granted Dec 4, 1990·42 cites·17 claims
- 1080US6823093B2Tunable micro-optic architecture for combining light beam outputs of dual capillary polarization-maintaining optical fibersJDS UNIPHASE CORP·Filed 2002·Granted Nov 23, 2004·24 cites·18 claims
- 1180US6118910AMethod of aligning optical fibers to a multi-port optical assemblyAGILENT TECHNOLOGIES INC·Filed 1998·Granted Sep 12, 2000·55 cites·17 claims
- 1276US6014244AMulti-port optical circulator utilizing imaging lens and correction optical elementHEWLETT PACKARD CO·Filed 1998·Granted Jan 11, 2000·45 cites·18 claims
- 1375US6757451B2Optical circulatorJDS UNIPHASE CORP·Filed 2002·Granted Jun 29, 2004·20 cites·29 claims
- 1474US6078716AThermally expanded multiple core fiberE TEK DYNAMICS INC·Filed 1999·Granted Jun 20, 2000·32 cites·27 claims
- 1574US5724373AMicrophotonic acousto-optic tunable laserHEWLETT PACKARD CO·Filed 1996·Granted Mar 3, 1998·46 cites·4 claims
- 1672US7515780B2System and method for fabricating an optical isolatorALCATEL LUCENT USA INC·Filed 2006·Granted Apr 7, 2009·3 cites·14 claims
- 1772US7058304B2Bi-directional cross-connectJDS UNIPHASE CORP·Filed 2001·Granted Jun 6, 2006·10 cites·16 claims
- 1872US6711310B2High power fiber isolatorJDS UNIPHASE CORP·Filed 2001·Granted Mar 23, 2004·14 cites·20 claims
- 1971US7081996B2Isolated polarization beam splitter and combinerJDS UNIPHASE INC·Filed 2001·Granted Jul 25, 2006·14 cites·27 claims
- 2071US6545805B2Polarization-dependent retroreflection mirror deviceJDS UNIPHASE CORP·Filed 2001·Granted Apr 8, 2003·16 cites·20 claims
- 2169US6587267B2Beam directing deviceJDS UNIPHASE INC·Filed 2001·Granted Jul 1, 2003·13 cites·10 claims
- 2269US6333816B1Apparatus capable of operating as interleaver/deinterleavers or filtersJDS UNIPHASE CORP·Filed 2000·Granted Dec 25, 2001·13 cites·19 claims
- 2368US6697198B2Optical interleavers/deinterleaversJDS UNIPHASE CORP·Filed 2001·Granted Feb 24, 2004·11 cites·22 claims
- 2467US6317250B1Optical isolator using multiple core fibersE TEK DYNAMICS INC·Filed 2000·Granted Nov 13, 2001·10 cites·35 claims
- 2566US6149278AWavelength independent variable optical attenuatorE TEK DYNAMICS·Filed 1999·Granted Nov 21, 2000·30 cites·16 claims
- 2666US5611004AMicrophotonic polarization independent acousto optical tunable filter and receiverHEWLETT PACKARD CO·Filed 1996·Granted Mar 11, 1997·36 cites·7 claims
- 2765US6657785B2Bi-directional circulatorJDS UNIPHASE INC·Filed 2001·Granted Dec 2, 2003·9 cites·19 claims
- 2865US6587266B2Bi-directional isolatorJDS UNIPHASE CORP·Filed 2001·Granted Jul 1, 2003·9 cites·20 claims
- 2964US6804467B2Chromatic dispersion compensation deviceJDS UNIPHASE INC·Filed 2001·Granted Oct 12, 2004·8 cites·22 claims
- 3064US6097869AMultiple port reflection based circulatorE TEK DYNAMICS INC·Filed 1999·Granted Aug 1, 2000·20 cites·15 claims
- 3164US5974205ACompact two-by-n optical components based on birefringent walk-off crystalsHEWLETT PACKARD CO·Filed 1997·Granted Oct 26, 1999·26 cites·26 claims
- 3262US6625352B2Optical coupling systemJDS UNIPHASE CORP·Filed 2001·Granted Sep 23, 2003·7 cites·18 claims
- 3362US6342968B1Frequency tuning of optical devicesJDS UNIPHASE CORP·Filed 2000·Granted Jan 29, 2002·7 cites·13 claims
- 3462US5808793ALow-cost compact optical isolatorsHEWLETT PACKARD CO·Filed 1996·Granted Sep 15, 1998·30 cites·9 claims
- 3561US7031060B2Non-moving parts add/drop deviceJDS UNIPHASE CORP·Filed 2001·Granted Apr 18, 2006·5 cites·21 claims
- 3661US5930418AOptical assembly and method based on TEC fibresHEWLETT PACKARD CO·Filed 1997·Granted Jul 27, 1999·24 cites·14 claims
- 3758US6374009B1TEMC fiber based optical switchJDS UNIPHASE CORP·Filed 1999·Granted Apr 16, 2002·20 cites·16 claims
- 3858US6075642AMulti-port optical isolatorHEWLETT PACKARD CO·Filed 1998·Granted Jun 13, 2000·23 cites·14 claims
- 3956US4782312AMode selective magnetostatic wave resonatorsHEWLETT PACKARD CO·Filed 1987·Granted Nov 1, 1988·11 cites·15 claims
- 4055US4751480AOne port magnetostatic wave resonatorHEWLETT PACKARD CO·Filed 1986·Granted Jun 14, 1988·11 cites·18 claims
- 4154US6275637B1Thermally expanded multiple core fiber based reflection type optical isolatorJDS UNIPHASE CORP·Filed 1999·Granted Aug 14, 2001·13 cites·20 claims
- 4253US6360034B1Reflection based nonmoving part optical switchJDS UNIPHASE CORP·Filed 1999·Granted Mar 19, 2002·19 cites·10 claims
- 4353US6246518B1Reflection type optical isolatorE TEK DYNAMICS INC·Filed 1999·Granted Jun 12, 2001·17 cites·23 claims
- 4452US8498538B2Compact monolithic dispersion compensatorGREENBERG MICHAEL·Filed 2009·Granted Jul 30, 2013·1 cites·4 claims
- 4552US6337770B1Single-pass folded interleaver/deinterleaversJDS UNIPHASE CORP·Filed 1999·Granted Jan 8, 2002·15 cites·29 claims
- 4652US6335830B1Double-pass folded interleaver/deinterleaversJDS UNIPHASE CORP·Filed 1999·Granted Jan 1, 2002·16 cites·22 claims
- 4749US6026202ACompact, low crosstalk, three-port optical circulatorHEWLETT PACKARD CO·Filed 1997·Granted Feb 15, 2000·16 cites·21 claims
- 4847US5528724AApparatus and method for aligning optical fibers with respect to one anotherHEWLETT PACKARD CO·Filed 1995·Granted Jun 18, 1996·13 cites·10 claims
- 4942US2003053209A1Dual stage optical isolator with reduced polarization mode dispersion and beam offsetJDS UNIPHASE CORP·Filed 2002·Application pending·0 cites
- 5041US4777462AEdge coupler magnetostatic wave structuresHEWLETT PACKARD CO·Filed 1987·Granted Oct 11, 1988·6 cites·14 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →