RH

Roger Helkey

CN Calient Networks: 26 patents #1 of 48Top 3%
MIT: 4 patents #1,242 of 9,367Top 15%
University of California: 3 patents #2,984 of 18,278Top 20%
CT Calient Technologies: 2 patents #7 of 24Top 30%
UF US Air Force: 1 patents #6,190 of 16,312Top 40%
Overall (All Time): #81,893 of 4,157,543Top 2%
39
Patents All Time

Issued Patents All Time

Showing 25 most recent of 39 patents

Patent #TitleCo-InventorsDate
11914263 Analog predistortion linearization for optical fiber communication links James F. Buckwalter, Navid Hosseinzadeh, Aditya Jain 2024-02-27
8822906 Multichannel optical power meter using free space beam sampling Shifu Yuan, Nitin Kataria 2014-09-02
8639069 Wavelength dependent optical switch John E. Bowers, Xuezhe Zheng, David E. Welsh, Robert Anderson, Olivier Jerphagnon 2014-01-28
7676125 Method and apparatus to provide multi-channel bulk fiber optical power detection Xuezhe Zheng, Shifu Yuan, Marduke Yousepfor, Charles M. Corbalis, Chandrasekhar Pusarla 2010-03-09
7529441 Wavelength routing optical switch Shifu Yuan, Xuezhe Zheng 2009-05-05
7496252 Optical switch fabric with redundancy Charles M. Corbalis, Walt Joseph Fant 2009-02-24
7254293 Wavelength routing optical switch Shifu Yuan, Xuezhe Zheng 2007-08-07
7248760 Optical switch fabric with redundancy Charles M. Corbalis, Walt Joseph Fant 2007-07-24
7146069 Optical system for selectable delay John E. Bowers 2006-12-05
7142744 Wavelength power equalization by attenuation in an optical switch Tony Walter, Dan Blumenthal, John E. Bowers, Peter Hunt, Xuezhe Zheng 2006-11-28
7127137 Optical switch with adjustable optical loss John E. Bowers, Shifu Yuan, Xuezhe Zheng, James R. Sechrist 2006-10-24
7110633 Method and apparatus to provide alternative paths for optical protection path switch arrays John E. Bowers, Adrian John Keating 2006-09-19
6950215 Method and apparatus for monitoring optical switches Walt Joseph Fant, Tony Walter, Peter Hunt, David E. Welsh 2005-09-27
6904195 Optical switch with adjustable optical loss John E. Bowers, Shifu Yuan, Xuezhe Zheng, James R. Sechrist 2005-06-07
6882766 Optical switch fabric with redundancy Charles M. Corbalis, Walt Joseph Fant 2005-04-19
6819824 Optical switch package David E. Welsh, James R. Sechrist, John E. Bowers, Adrian John Keating, Xuezhe Zheng +3 more 2004-11-16
6819815 Method and apparatus for indirect adjustment of optical switch reflectors Charles M. Corbalis, John E. Bowers, Shifu Yuan, David E. Welsh 2004-11-16
6792177 Optical switch with internal monitoring David E. Welsh, Adrian John Keating, Daniel J. Blumenthal, Walter Fant 2004-09-14
6788842 Method and apparatus for internal monitoring and control of reflectors in an optical switch Robert Kehl Sink, John E. Bowers, Robert Anderson, Noel C. MacDonald 2004-09-07
6697547 Wavelength power equalization by attenuation in an optical switch Tony Walter, Dan Blumenthal, John E. Bowers, Peter Hunt, Xuezhe Zheng 2004-02-24
6668108 Optical cross-connect switch with integrated optical signal tap John E. Bowers, Tony Walter, Kevin S. Yamada, David E. Welsh 2003-12-23
6643425 Optical switch having switch mirror arrays controlled by scanning beams John E. Bowers, Chandrasekhar Pusarla, Kevin White, Dan Blumenthal, John Chong +1 more 2003-11-04
6616353 Laser intensity noise suppression using unbalanced interferometer modulation 2003-09-09
6612706 Micromachined apparatus for improved reflection of light 2003-09-02
6585383 Micromachined apparatus for improved reflection of light 2003-07-01