Inventor · disambiguated record
Roger Helkey
Also filed as: HELKEY ROGER · HELKEY ROGER J · HELKEY ROGER JONATHAN
39 granted patents·5 pending applications·2,158 citations·filing 1988–2020
98Inventor score
Files withCALIENT NETWORKS INC20CALIENT NETWORKS7MASSACHUSETTS INST TECHNOLOGY3UNIV CALIFORNIA3ASHTECH TELESIS INC2
Top patents by PatentIndex Score
44 records- 0197US6668108B1Optical cross-connect switch with integrated optical signal tapCALIENT NETWORKS INC·Filed 2000·Granted Dec 23, 2003·171 cites·33 claims
- 0297US5293170AGlobal positioning system receiver digital processing techniqueASHTECH INC·Filed 1992·Granted Mar 8, 1994·457 cites·44 claims
- 0395US7496252B1Optical switch fabric with redundancyCALIENT NETWORKS INC·Filed 2005·Granted Feb 24, 2009·48 cites·16 claims
- 0495US7248760B1Optical switch fabric with redundancyCALIENT NETWORKS INC·Filed 2005·Granted Jul 24, 2007·51 cites·5 claims
- 0595US5134407AGlobal positioning system receiver digital processing techniqueASHTECH TELESIS INC·Filed 1991·Granted Jul 28, 1992·338 cites·19 claims
- 0695US4928106AGlobal positioning system receiver with improved radio frequency and digital processingASHTECH TELESIS INC·Filed 1988·Granted May 22, 1990·292 cites·15 claims
- 0793US7142744B2Wavelength power equalization by attenuation in an optical switchCALIENT NETWORKS·Filed 2005·Granted Nov 28, 2006·25 cites·7 claims
- 0891US6819815B1Method and apparatus for indirect adjustment of optical switch reflectorsCALIENT NETWORKS·Filed 2001·Granted Nov 16, 2004·54 cites·24 claims
- 0991US6563106B1Micro-electro-mechanical-system (MEMS) mirror device and methods for fabricating the sameCALIENT NETWORKS INC·Filed 2001·Granted May 13, 2003·79 cites·68 claims
- 1090US6882766B1Optical switch fabric with redundancyCALIENT NETWORKS INC·Filed 2001·Granted Apr 19, 2005·36 cites·31 claims
- 1190US6469649B1Narrowband analog to digital converter with suppressed second-order distortionMASSACHUSETTS INST TECHNOLOGY·Filed 2000·Granted Oct 22, 2002·47 cites·31 claims
- 1289US7254293B1Wavelength routing optical switchCALIENT NETWORKS INC·Filed 2004·Granted Aug 7, 2007·24 cites·15 claims
- 1388US5802084AGeneration of high power optical pulses using flared mode-locked semiconductor lasers and optical amplifiersUNIV CALIFORNIA·Filed 1994·Granted Sep 1, 1998·58 cites·10 claims
- 1486US6697547B2Wavelength power equalization by attenuation in an optical switchCALIENT NETWORKS·Filed 2001·Granted Feb 24, 2004·26 cites·26 claims
- 1586US6560384B1Optical switch having mirrors arranged to accommodate freedom of movementCALIENT NETWORKS INC·Filed 2000·Granted May 6, 2003·43 cites·11 claims
- 1685US7676125B2Method and apparatus to provide multi-channel bulk fiber optical power detectionCALIENT NETWORKS INC·Filed 2007·Granted Mar 9, 2010·18 cites·20 claims
- 1785US6643425B1Optical switch having switch mirror arrays controlled by scanning beamsCALIENT NETWORKS INC·Filed 2000·Granted Nov 4, 2003·34 cites·49 claims
- 1884US6483961B1Dual refraction index collimator for an optical switchCALIENT NETWORKS INC·Filed 2000·Granted Nov 19, 2002·32 cites·36 claims
- 1981US6792177B2Optical switch with internal monitoringCALIENT NETWORKS INC·Filed 2001·Granted Sep 14, 2004·28 cites·56 claims
- 2080US7146069B1Optical system for selectable delayCALIENT NETWORKS INC·Filed 2003·Granted Dec 5, 2006·22 cites·12 claims
- 2179US8639069B1Wavelength dependent optical switchHELKEY ROGER JONATHAN·Filed 2004·Granted Jan 28, 2014·23 cites·10 claims
- 2279US7127137B2Optical switch with adjustable optical lossCALIENT NETWORKS INC·Filed 2005·Granted Oct 24, 2006·8 cites·9 claims
- 2376US5799024AGeneration of high power optical pulses using flared mode-locked semiconductor lasers and optical amplifiersUNIV CALIFORNIA·Filed 1996·Granted Aug 25, 1998·39 cites·13 claims
- 2475US7529441B2Wavelength routing optical switchCALIENT NETWORKS INC·Filed 2007·Granted May 5, 2009·4 cites·12 claims
- 2573US6950215B2Method and apparatus for monitoring optical switchesCALIENT NETWORKS·Filed 2001·Granted Sep 27, 2005·16 cites·12 claims
- 2673US6616353B1Laser intensity noise suppression using unbalanced interferometer modulationMASSACHUSETTS INST TECHNOLOGY·Filed 1999·Granted Sep 9, 2003·46 cites·11 claims
- 2771US6904195B2Optical switch with adjustable optical lossCALIENT NETWORKS INC·Filed 2003·Granted Jun 7, 2005·8 cites·21 claims
- 2871US5955875ALinearized optical samplerMASSACHUSETTS INST TECHNOLOGY·Filed 1997·Granted Sep 21, 1999·27 cites·20 claims
- 2970US7110633B1Method and apparatus to provide alternative paths for optical protection path switch arraysCALIENT NETWORKS INC·Filed 2002·Granted Sep 19, 2006·12 cites·27 claims
- 3066US6788842B1Method and apparatus for internal monitoring and control of reflectors in an optical switchCALIENT NETWORKS·Filed 2002·Granted Sep 7, 2004·10 cites·40 claims
- 3166US6585383B2Micromachined apparatus for improved reflection of lightCALIENT NETWORKS INC·Filed 2000·Granted Jul 1, 2003·14 cites·6 claims
- 3264US6449098B1High uniformity lens arrays having lens correction and methods for fabricating the sameCALIENT NETWORKS INC·Filed 2000·Granted Sep 10, 2002·8 cites·29 claims
- 3362US8822906B2Multichannel optical power meter using free space beam samplingYUAN SHIFU·Filed 2011·Granted Sep 2, 2014·2 cites·15 claims
- 3459US6578974B2Micromachined apparatus for improved reflection of lightCALIENT NETWORKS INC·Filed 2001·Granted Jun 17, 2003·4 cites·2 claims
- 3558US6441932B1Intensity noise suppression using differential delay cancellation in external modulation linksUS AIR FORCE·Filed 1999·Granted Aug 27, 2002·25 cites·4 claims
- 3654US11914263B2Analog predistortion linearization for optical fiber communication linksUNIV CALIFORNIA·Filed 2020·Granted Feb 27, 2024·0 cites·15 claims
- 3753US6819824B1Optical switch packageCALIENT NETWORKS·Filed 2001·Granted Nov 16, 2004·5 cites·49 claims
- 3853US6028424ALinearized optical samplerMASSACHUETTS INST OF TECHNOLOG·Filed 1999·Granted Feb 22, 2000·19 cites·16 claims
- 3951US2007031105A1Wavelength power equalization by attenuation in an optical switchWALTER TONY·Filed 2006·Application pending·0 cites
- 4048US6612706B2Micromachined apparatus for improved reflection of lightCALIENT NETWORKS INC·Filed 2001·Granted Sep 2, 2003·5 cites·8 claims
- 4143US2004120636A1Wavelength power equalization by attenuation in an optical switchCALIENT NETWORKS·Filed 2003·Application pending·0 cites
- 4241US2002030905A1Micromachined apparatus for improved reflection of lightFiled 2001·Application pending·0 cites
- 4337US2007297716A1Reconfigurable photonic delay line filterHELKEY ROGER J·Filed 2007·Application pending·0 cites
- 4434US2009263122A1Method and apparatus for network diagnostics in a passive optical networkHELKEY ROGER JONATHAN·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →