Roger J. Helkey

Person

Chelmsford, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Analog predistortion linearization for optical fiber communication...
- Patent number 11,914,263
- Issue date Feb 27, 2024
- The Regents of the University of California
- James F. Buckwalter
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Orthogonal-mode laser gyroscope
- Patent number 10,180,325
- Issue date Jan 15, 2019
- The Regents of the University of California
- John E. Bowers
- G01 - MEASURING TESTING
Information Patent Grant
Multichannel optical power meter using free space beam sampling
- Patent number 8,822,906
- Issue date Sep 2, 2014
- Calient Technologies, Inc.
- Shifu Yuan
- G01 - MEASURING TESTING
Information Patent Grant
Wavelength dependent optical switch
- Patent number 8,639,069
- Issue date Jan 28, 2014
- Calient Technologies, Inc.
- Roger Jonathan Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus to provide multi-channel bulk fiber optical po...
- Patent number 7,676,125
- Issue date Mar 9, 2010
- Calient Networks, Inc.
- Xuezhe Zheng
- G02 - OPTICS
Information Patent Grant
Wavelength routing optical switch
- Patent number 7,529,441
- Issue date May 5, 2009
- Calient Networks, Inc.
- Roger Jonathan Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch fabric with redundancy
- Patent number 7,496,252
- Issue date Feb 24, 2009
- Calient Networks, Inc.
- Charles Matthew Corbalis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength routing optical switch
- Patent number 7,254,293
- Issue date Aug 7, 2007
- Calient Networks, Inc.
- Roger Jonathan Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch fabric with redundancy
- Patent number 7,248,760
- Issue date Jul 24, 2007
- Calient Networks, Inc.
- Charles Matthew Corbalis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical system for selectable delay
- Patent number 7,146,069
- Issue date Dec 5, 2006
- Calient Networks, Inc.
- John Edward Bowers
- G02 - OPTICS
Information Patent Grant
Wavelength power equalization by attenuation in an optical switch
- Patent number 7,142,744
- Issue date Nov 28, 2006
- Calient Networks
- Tony Walter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch with adjustable optical loss
- Patent number 7,127,137
- Issue date Oct 24, 2006
- Calient Networks, Inc.
- John Edward Bowers
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus to provide alternative paths for optical prote...
- Patent number 7,110,633
- Issue date Sep 19, 2006
- Calient Networks, Inc.
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Grant
Method and apparatus for monitoring optical switches
- Patent number 6,950,215
- Issue date Sep 27, 2005
- Calient Networks
- Walt Fant
- G02 - OPTICS
Information Patent Grant
Optical switch with adjustable optical loss
- Patent number 6,904,195
- Issue date Jun 7, 2005
- Calient Networks, Inc.
- John Edward Bowers
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch fabric with redundancy
- Patent number 6,882,766
- Issue date Apr 19, 2005
- Calient Networks, Inc.
- Charles Matthew Corbalis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for indirect adjustment of optical switch refl...
- Patent number 6,819,815
- Issue date Nov 16, 2004
- Calient Networks
- Charles Corbalis
- G02 - OPTICS
Information Patent Grant
Optical switch package
- Patent number 6,819,824
- Issue date Nov 16, 2004
- Calient Networks
- David Welsh
- G02 - OPTICS
Information Patent Grant
Optical switch with internal monitoring
- Patent number 6,792,177
- Issue date Sep 14, 2004
- Calient Networks, Inc.
- David Edward Welsh
- G02 - OPTICS
Information Patent Grant
Method and apparatus for internal monitoring and control of reflect...
- Patent number 6,788,842
- Issue date Sep 7, 2004
- Calient Networks
- Robert Kehl Sink
- G02 - OPTICS
Information Patent Grant
Feedback stabilization of a loss optimized switch
- Patent number 6,728,433
- Issue date Apr 27, 2004
- Calient Networks, Inc.
- John Edward Bowers
- G02 - OPTICS
Information Patent Grant
Wavelength power equalization by attenuation in an optical switch
- Patent number 6,697,547
- Issue date Feb 24, 2004
- Calient Networks
- Tony Walter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical cross-connect switch with integrated optical signal tap
- Patent number 6,668,108
- Issue date Dec 23, 2003
- Calient Networks, Inc.
- Roger Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch having switch mirror arrays controlled by scanning b...
- Patent number 6,643,425
- Issue date Nov 4, 2003
- Calient Networks, Inc.
- John Bowers
- G02 - OPTICS
Information Patent Grant
Laser intensity noise suppression using unbalanced interferometer m...
- Patent number 6,616,353
- Issue date Sep 9, 2003
- Massachusetts Institute of Technology
- Roger Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Micromachined apparatus for improved reflection of light
- Patent number 6,612,706
- Issue date Sep 2, 2003
- Calient Networks, Inc.
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Grant
Micromachined apparatus for improved reflection of light
- Patent number 6,585,383
- Issue date Jul 1, 2003
- Calient Networks, Inc.
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Grant
Micromachined apparatus for improved reflection of light
- Patent number 6,578,974
- Issue date Jun 17, 2003
- Calient Networks, Inc.
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Grant
Micro-electro-mechanical-system (MEMS) mirror device and methods fo...
- Patent number 6,563,106
- Issue date May 13, 2003
- Calient Networks, Inc.
- John Edward Bowers
- B81 - MICRO-STRUCTURAL TECHNOLOGY
Information Patent Grant
Optical switch having mirrors arranged to accommodate freedom of mo...
- Patent number 6,560,384
- Issue date May 6, 2003
- Calient Networks, Inc.
- Roger Jonathan Helkey
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
ANALOG PREDISTORTION LINEARIZATION FOR OPTICAL FIBER COMMUNICATION...
- Publication number 20220187675
- Publication date Jun 16, 2022
- The Regents of the University of California
- James F. Buckwalter
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ORTHOGONAL-MODE LASER GYROSCOPE
- Publication number 20170307375
- Publication date Oct 26, 2017
- The Regents of the University of California
- John E. Bowers
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL MONITORING MODULE
- Publication number 20130119243
- Publication date May 16, 2013
- Calient Networks, Inc.
- Shifu Yuan
- G01 - MEASURING TESTING
Information Patent Application
Method and apparatus for network diagnostics in a passive optical n...
- Publication number 20090263122
- Publication date Oct 22, 2009
- Roger Jonathan Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and Apparatus to Provide Multi-Channel Bulk Fiber Optical Po...
- Publication number 20080002932
- Publication date Jan 3, 2008
- Xuezhe Zheng
- G02 - OPTICS
Information Patent Application
Reconfigurable photonic delay line filter
- Publication number 20070297716
- Publication date Dec 27, 2007
- Roger Jonathan Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength routing optical switch
- Publication number 20070258679
- Publication date Nov 8, 2007
- Roger Jonathan Helkey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength power equalization by attenuation in an optical switch
- Publication number 20070031105
- Publication date Feb 8, 2007
- Tony Walter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switch with adjustable optical loss
- Publication number 20050254747
- Publication date Nov 17, 2005
- Calient Networks, Inc.
- John Edward Bowers
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength power equalization by attenuation in an optical switch
- Publication number 20050152637
- Publication date Jul 14, 2005
- Calient Networks
- Tony Walter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength power equalization by attenuation in an optical switch
- Publication number 20040120636
- Publication date Jun 24, 2004
- Calient Networks
- Tony Walter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switch with adjustable optical loss
- Publication number 20040081390
- Publication date Apr 29, 2004
- Calient Networks, Inc.
- John Edward Bowers
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for monitoring optical switches
- Publication number 20030012481
- Publication date Jan 16, 2003
- Walt Fant
- G02 - OPTICS
Information Patent Application
Wavelength power equalization by attenuation in an optical switch
- Publication number 20020168131
- Publication date Nov 14, 2002
- Tony Walter
- G02 - OPTICS
Information Patent Application
Optical switch with internal monitoring
- Publication number 20020126949
- Publication date Sep 12, 2002
- David Edward Welsh
- G02 - OPTICS
Information Patent Application
Micro-electro-mechanical-system (MEMS) mirror device
- Publication number 20020071169
- Publication date Jun 13, 2002
- John Edward Bowers
- B81 - MICRO-STRUCTURAL TECHNOLOGY
Information Patent Application
Micromachined apparatus for improved reflection of light
- Publication number 20020044365
- Publication date Apr 18, 2002
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Application
Micromachined apparatus for improved reflection of light
- Publication number 20020030905
- Publication date Mar 14, 2002
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Application
Micromachined apparatus for improved reflection of light
- Publication number 20020018311
- Publication date Feb 14, 2002
- Roger Jonathan Helkey
- G02 - OPTICS
Information Patent Application
Micromachined apparatus for improved reflection of light
- Publication number 20010055166
- Publication date Dec 27, 2001
- Roger Jonathan Helkey
- G02 - OPTICS

Roger J. Helkey

Person

Patents Grantslast 30 patents

Analog predistortion linearization for optical fiber communication...

Orthogonal-mode laser gyroscope

Multichannel optical power meter using free space beam sampling

Wavelength dependent optical switch

Method and apparatus to provide multi-channel bulk fiber optical po...

Wavelength routing optical switch

Optical switch fabric with redundancy

Wavelength routing optical switch

Optical switch fabric with redundancy

Optical system for selectable delay

Wavelength power equalization by attenuation in an optical switch

Optical switch with adjustable optical loss

Method and apparatus to provide alternative paths for optical prote...

Method and apparatus for monitoring optical switches

Optical switch with adjustable optical loss

Optical switch fabric with redundancy

Method and apparatus for indirect adjustment of optical switch refl...

Optical switch package

Optical switch with internal monitoring

Method and apparatus for internal monitoring and control of reflect...

Feedback stabilization of a loss optimized switch

Wavelength power equalization by attenuation in an optical switch

Optical cross-connect switch with integrated optical signal tap

Optical switch having switch mirror arrays controlled by scanning b...

Laser intensity noise suppression using unbalanced interferometer m...

Micromachined apparatus for improved reflection of light

Micromachined apparatus for improved reflection of light

Micromachined apparatus for improved reflection of light

Micro-electro-mechanical-system (MEMS) mirror device and methods fo...

Optical switch having mirrors arranged to accommodate freedom of mo...

Patents Applicationslast 30 patents

ANALOG PREDISTORTION LINEARIZATION FOR OPTICAL FIBER COMMUNICATION...

ORTHOGONAL-MODE LASER GYROSCOPE

OPTICAL MONITORING MODULE

Method and apparatus for network diagnostics in a passive optical n...

Method and Apparatus to Provide Multi-Channel Bulk Fiber Optical Po...

Reconfigurable photonic delay line filter

Wavelength routing optical switch

Wavelength power equalization by attenuation in an optical switch

Optical switch with adjustable optical loss

Wavelength power equalization by attenuation in an optical switch

Wavelength power equalization by attenuation in an optical switch

Optical switch with adjustable optical loss

Method and apparatus for monitoring optical switches

Wavelength power equalization by attenuation in an optical switch

Optical switch with internal monitoring

Micro-electro-mechanical-system (MEMS) mirror device

Micromachined apparatus for improved reflection of light

Micromachined apparatus for improved reflection of light

Micromachined apparatus for improved reflection of light

Micromachined apparatus for improved reflection of light