Patents by Inventor Jane D. LeGrange

Jane D. LeGrange has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10228511
    Abstract: A slot waveguide for electro-optic modulation is provided. The slot waveguide includes a slot and Bragg gratings defined by outer walls of the slot. The Bragg gratings are configured to slow an optical signal. The slot defines a low-refractive index region and the Bragg gratings spaced apart by the slot define a high-refractive index region. The slot waveguide includes a pair of electrodes extending parallel and adjacent to the slot waveguide. The electrodes are configured to carry an electrical modulation signal to induce a change in a phase of the optical signal. The slot of the slot waveguide is at least partially filled with an electro-optic polymeric material poled in a direction orthogonal to a direction of propagation of the optical signal in the slot waveguide.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 12, 2019
    Assignee: LGS Innovations LLC
    Inventors: Jane D. LeGrange, Mihaela Dinu, Alex Pidwerbetsky
  • Publication number: 20180088274
    Abstract: A slot waveguide for electro-optic modulation is provided. The slot waveguide includes a slot and Bragg gratings defined by outer walls of the slot. The Bragg gratings are configured to slow an optical signal. The slot defines a low-refractive index region and the Bragg gratings spaced apart by the slot define a high-refractive index region. The slot waveguide includes a pair of electrodes extending parallel and adjacent to the slot waveguide. The electrodes are configured to carry an electrical modulation signal to induce a change in a phase of the optical signal. The slot of the slot waveguide is at least partially filled with an electro-optic polymeric material poled in a direction orthogonal to a direction of propagation of the optical signal in the slot waveguide.
    Type: Application
    Filed: July 19, 2017
    Publication date: March 29, 2018
    Inventors: Jane D. LeGrange, Mihaela Dinu, Alex Pidwerbetsky
  • Patent number: 8073333
    Abstract: According to one embodiment, a multiplex delay unit comprises an optical all-pass filter (OAPF) adapted to apply continuously tunable group delay to a wavelength division multiplexing (WDM) signal so that all of its WDM components are delayed by substantially the same delay time. The OAPF has a free spectral range (FSR) that matches spectral separation between carrier wavelengths of the WDM signal. Advantageously, an optical multiplex synchronizer suitable for feeding a synchronous optical switch fabric can be implemented as an integrated waveguide circuit using a plurality of such multiplex delay units.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: December 6, 2011
    Assignee: Alcatel Lucent
    Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
  • Patent number: 7945165
    Abstract: One embodiment of the invention provides an optical signal synchronizer having a plurality of optical channel synchronizers. Each optical channel synchronizer receives a respective input wavelength division multiplexing (WDM) signal and processes it to produce a corresponding output WDM signal, in which optical data packets corresponding to different carrier wavelengths are synchronized to each other regardless of the presence or absence of such synchronization in the input WDM signal. The optical signal synchronizer further has an optical multiplex synchronizer that receives the output WDM signals from the optical channel synchronizers and synchronizes them to each other and to an external reference clock without demultiplexing any of them into individual WDM components.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: May 17, 2011
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
  • Publication number: 20090129780
    Abstract: One embodiment of the invention provides an optical signal synchronizer having a plurality of optical channel synchronizers. Each optical channel synchronizer receives a respective input wavelength division multiplexing (WDM) signal and processes it to produce a corresponding output WDM signal, in which optical data packets corresponding to different carrier wavelengths are synchronized to each other regardless of the presence or absence of such synchronization in the input WDM signal. The optical signal synchronizer further has an optical multiplex synchronizer that receives the output WDM signals from the optical channel synchronizers and synchronizes them to each other and to an external reference clock without demultiplexing any of them into individual WDM components.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Applicant: Lucent Technologies Inc.
    Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
  • Publication number: 20090129779
    Abstract: According to one embodiment, a multiplex delay unit comprises an optical all-pass filter (OAPF) adapted to apply continuously tunable group delay to a wavelength division multiplexing (WDM) signal so that all of its WDM components are delayed by substantially the same delay time. The OAPF has a free spectral range (FSR) that matches spectral separation between carrier wavelengths of the WDM signal. Advantageously, an optical multiplex synchronizer suitable for feeding a synchronous optical switch fabric can be implemented as an integrated waveguide circuit using a plurality of such multiplex delay units.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
  • Patent number: 7515780
    Abstract: There is provided a system and method for fabricating an optical isolator. More specifically, there is provided a fiber optical isolator comprising a first isolator stage comprising a Faraday rotator configured to adjust the polarity of a light beam, and a heat sink coupled to the Faraday rotator and configured to dissipate heat generated in the Faraday rotator by the light beam.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: April 7, 2009
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Kok Wai Chang, Jane D. LeGrange
  • Publication number: 20080298739
    Abstract: There is provided a system and method for fabricating an optical isolator. More specifically, there is provided a fiber optical isolator comprising a first isolator stage comprising a Faraday rotator configured to adjust the polarity of a light beam, and a heat sink coupled to the Faraday rotator and configured to dissipate heat generated in the Faraday rotator by the light beam.
    Type: Application
    Filed: October 25, 2006
    Publication date: December 4, 2008
    Inventors: Kok Wai Chang, Jane D. LeGrange
  • Patent number: 7212695
    Abstract: In accordance with the invention, a variable optical delay line with a large continuous tuning range comprises an incremental variable delay line to provide delay selected from a sequence of incrementally differing delays and a continuous variable delay line to provide a continuously variable delay over a range encompassing a delay increment in the first variable delay line. In a preferred embodiment, the first variable delay line comprises an array of delay paths where each path is curved differently from the others to provide an incrementally different delay. The second variable delay line is a tunable delay path continuously tunable over the delay increment of the first.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: May 1, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Albin Lloyd Kasper, Jane D. LeGrange, Christi Kay Madsen
  • Patent number: 6934431
    Abstract: In accordance with the invention, a high-resolution variable optical delay line comprises an optical switch, such as an optical micromechanical mirror switch, and an array of delay fiber paths. Each delay fiber path in the array comprises a region where the fiber is curved differently from the other fibers in the region and a reflector. Each fiber path advantageously comprises other regions where the fiber is essentially parallel to the other fibers in the region. Each fiber is curved differently from the others in order that the fiber paths each provide a different delay.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: August 23, 2005
    Assignee: Lucent Technologies Inc.
    Inventors: Linda M. Braun, William Robert Holland, Jane D. LeGrange
  • Patent number: 6748129
    Abstract: In accordance with the invention, the optical power level in an optical waveguide is monitored by enclosing a length of the waveguide within an insulated cavity of comparable length and cross section, measuring a first temperature T1 within the cavity, measuring a second temperature T2 outside the cavity and deriving from the difference, T1−T2, a measure of the optical power level. Exemplary apparatus for monitoring the optical power level in an optical waveguide comprises a substrate with an insulated groove for receiving an optical fiber, an insulated lid for sealing the fiber within the groove, and internal and external temperature sensors.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: June 8, 2004
    Assignee: Lucent Technologies Inc.
    Inventors: Linda M. Braun, Jane D. LeGrange, Alexandru Paunescu
  • Publication number: 20030161569
    Abstract: In accordance with the invention, the optical power level in an optical waveguide is monitored by enclosing a length of the waveguide within an insulated cavity of comparable length and cross section, measuring a first temperature T1 within the cavity, measuring a second temperature T2 outside the cavity and deriving from the difference, T1−T2, a measure of the optical power level. Exemplary apparatus for monitoring the optical power level in an optical waveguide comprises a substrate with an insulated groove for receiving an optical fiber, an insulated lid for sealing the fiber within the groove, and internal and external temperature sensors.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 28, 2003
    Inventors: Linda M. Braun, Jane D. LeGrange, Alexandru Paunescu
  • Publication number: 20020067877
    Abstract: In accordance with the invention, a high-resolution variable optical delay line comprises an optical switch, such as an optical micromechanical mirror switch, and an array of delay fiber paths. Each delay fiber path in the array comprises a region where the fiber is curved differently from the other fibers in the region and a reflector. Each fiber path advantageously comprises other regions where the fiber is essentially parallel to the other fibers in the region. Each fiber is curved differently from the others in order that the fiber paths each provide a different delay.
    Type: Application
    Filed: February 1, 2001
    Publication date: June 6, 2002
    Inventors: Linda M. Braun, William Robert Holland, Jane D. LeGrange
  • Patent number: 5784138
    Abstract: For use in the display screen of a teleconferencing system, a shutter capable of assuming alternative transparent and scattering states and a method of manufacture therefor. In one embodiment, the shutter includes a film of a polymer-dispersed liquid crystal (PDLC) composition of a polymer and a liquid crystal material wherein the liquid crystal material makes up about 78% by weight of the film. The film is cured at a temperature ranging from about 32.degree. C. to about 38.degree. C., thereby decreasing the time it takes for the film to switch between the transparent and scattering states. The shutter further includes first and second layers of a transparent conductor for containing the film therebetween and driver circuitry, coupled to the film, for causing the film to have a response time equal to or less than 8 ms.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: July 21, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Richard V. Kollarits, Jane D. LeGrange, Timothy M. Miller
  • Patent number: 5208892
    Abstract: An optical waveguide (11) is composed substantially entirely of triazine.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: May 4, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: John J. Burack, Treliant Fang, Jane D. LeGrange, Jose A. Ors
  • Patent number: 5165959
    Abstract: An optical waveguide (11) is composed substantially entirely of triazine. Various methods for making desired triazine waveguide patterns are described.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: November 24, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: John J. Burack, Treliant Fang, Jane D. LeGrange, Jose A. Ors
  • Patent number: 5024873
    Abstract: A Langmuir-Blodgett monolayer polyimide film and a bulk amorphous polyimide film are in contacting superposed relation to form a composite film having improved moisture resistance. The composite film may be either a free film or provide an insulating coating on the surface of a microelectronics device.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: June 18, 1991
    Assignee: AT&T Bell Laboratories
    Inventors: John J. Burack, Jane D. LeGrange, Wesley P. Townsend
  • Patent number: 4962985
    Abstract: A semiconductor optical device, such as a photodetector or a semiconductor laser, is sealed by a Langmuir-Blodgett film that intercepts the optical path extending from the device. The film is less than one-thirtieth of a wavelength at the operating optical frequency, which precludes interference with transmitted light waves.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 16, 1990
    Assignee: AT&T Bell Laboratories
    Inventor: Jane D. LeGrange