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).
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Patent number: 10228511Abstract: 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: GrantFiled: July 19, 2017Date of Patent: March 12, 2019Assignee: LGS Innovations LLCInventors: Jane D. LeGrange, Mihaela Dinu, Alex Pidwerbetsky
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Publication number: 20180088274Abstract: 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: ApplicationFiled: July 19, 2017Publication date: March 29, 2018Inventors: Jane D. LeGrange, Mihaela Dinu, Alex Pidwerbetsky
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Patent number: 8073333Abstract: 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: GrantFiled: November 16, 2007Date of Patent: December 6, 2011Assignee: Alcatel LucentInventors: Pietro Arturo Bernasconi, Jane D. LeGrange
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Patent number: 7945165Abstract: 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: GrantFiled: November 16, 2007Date of Patent: May 17, 2011Assignee: Alcatel-Lucent USA Inc.Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
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Publication number: 20090129780Abstract: 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: ApplicationFiled: November 16, 2007Publication date: May 21, 2009Applicant: Lucent Technologies Inc.Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
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Publication number: 20090129779Abstract: 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: ApplicationFiled: November 16, 2007Publication date: May 21, 2009Applicant: LUCENT TECHNOLOGIES INC.Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
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Patent number: 7515780Abstract: 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: GrantFiled: October 25, 2006Date of Patent: April 7, 2009Assignee: Alcatel-Lucent USA Inc.Inventors: Kok Wai Chang, Jane D. LeGrange
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Publication number: 20080298739Abstract: 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: ApplicationFiled: October 25, 2006Publication date: December 4, 2008Inventors: Kok Wai Chang, Jane D. LeGrange
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Patent number: 7212695Abstract: 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: GrantFiled: August 5, 2003Date of Patent: May 1, 2007Assignee: Lucent Technologies Inc.Inventors: Albin Lloyd Kasper, Jane D. LeGrange, Christi Kay Madsen
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Patent number: 6934431Abstract: 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: GrantFiled: February 1, 2001Date of Patent: August 23, 2005Assignee: Lucent Technologies Inc.Inventors: Linda M. Braun, William Robert Holland, Jane D. LeGrange
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Patent number: 6748129Abstract: 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: GrantFiled: February 22, 2002Date of Patent: June 8, 2004Assignee: Lucent Technologies Inc.Inventors: Linda M. Braun, Jane D. LeGrange, Alexandru Paunescu
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Publication number: 20030161569Abstract: 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: ApplicationFiled: February 22, 2002Publication date: August 28, 2003Inventors: Linda M. Braun, Jane D. LeGrange, Alexandru Paunescu
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Publication number: 20020067877Abstract: 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: ApplicationFiled: February 1, 2001Publication date: June 6, 2002Inventors: Linda M. Braun, William Robert Holland, Jane D. LeGrange
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Patent number: 5784138Abstract: 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: GrantFiled: August 22, 1996Date of Patent: July 21, 1998Assignee: Lucent Technologies Inc.Inventors: Richard V. Kollarits, Jane D. LeGrange, Timothy M. Miller
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Patent number: 5208892Abstract: An optical waveguide (11) is composed substantially entirely of triazine.Type: GrantFiled: March 30, 1992Date of Patent: May 4, 1993Assignee: AT&T Bell LaboratoriesInventors: John J. Burack, Treliant Fang, Jane D. LeGrange, Jose A. Ors
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Patent number: 5165959Abstract: An optical waveguide (11) is composed substantially entirely of triazine. Various methods for making desired triazine waveguide patterns are described.Type: GrantFiled: November 25, 1991Date of Patent: November 24, 1992Assignee: AT&T Bell LaboratoriesInventors: John J. Burack, Treliant Fang, Jane D. LeGrange, Jose A. Ors
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Patent number: 5024873Abstract: 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: GrantFiled: December 5, 1988Date of Patent: June 18, 1991Assignee: AT&T Bell LaboratoriesInventors: John J. Burack, Jane D. LeGrange, Wesley P. Townsend
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Patent number: 4962985Abstract: 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: GrantFiled: October 2, 1989Date of Patent: October 16, 1990Assignee: AT&T Bell LaboratoriesInventor: Jane D. LeGrange