Patents Represented by Attorney, Agent or Law Firm Svetlana Z. Short
  • Patent number: 8325332
    Abstract: Start-up methods for frequency converted light sources and projector systems comprising frequency converted light sources are described herein. The start-up methods generally comprise modulating the frequency converted light source over three degrees of freedom (two spatial dimensions and one wavelength dimension). Specifically, fast oscillation of an axis of an adjustable optical component is performed simultaneously with fast oscillation of a wavelength of the semiconductor laser while a second axis of the adjustable optical component is incrementally stepped and the output intensity of the frequency converted light source is monitored for each step. This start-up method allows for three linear searches to be used to rapidly locate the appropriate control settings for the frequency converted light source.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 4, 2012
    Assignee: Corning Incorporated
    Inventors: Garrett Andrew Piech, Dragan Pikula, Daniel Ohen Ricketts
  • Patent number: 8317972
    Abstract: A method for removing a protective coating material from a portion of an optical fiber including a glass optical fiber having an outer surface surrounded by said protective coating material, said method comprising the steps of: (i) providing a fiber collection and support device having: (a) a coarse conical fiber collector having an input port and (b) a fine fiber centering collector including a fiber tube having an output port, said input port is larger then said output port; (ii) providing the fiber threaded through the course conical collector into the fiber collection tube of the fine fiber centering collector; (iii) contacting the fiber, as it exits from the output port of the fiber collection tube of the fiber collection and support device, with a stream of hot gas; and (iv) directing a stream of a hot gas onto the protective coating material that is to be removed.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: November 27, 2012
    Assignee: Corning Incorporated
    Inventors: Steven Akin Dunwoody, Oscar Palmer
  • Patent number: 8320418
    Abstract: Optical systems operable to emit multiple frequency-converted spectral peaks are provided. In one embodiment, an optical system includes an optical source and a wavelength conversion device. The optical source may include a laser configured to emit a pump beam having at least two fundamental spectral peaks. The wavelength conversion device may include a non-linear optical medium configured to phase match the second harmonic generation of each of the at least two fundamental spectral peaks and sum-frequency generation of the at least two fundamental spectral peaks such that an output beam comprising at least three frequency-converted spectral peaks having approximately equal power is emitted from an output facet of the wavelength conversion device when the pump beam of the optical source is incident on an input facet of the wavelength conversion device.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 27, 2012
    Assignee: Corning Incorporated
    Inventors: Dmitri Vladislavovich Kuksenkov, Shenping Li, Rostislav Vatchev Roussev
  • Patent number: 8315495
    Abstract: According to some embodiments an optical waveguide fiber comprises: (i) a Ge free core having an effective area of 90 ?m2 to 160 ?m2, at a 1550 nm wavelength, and ? value 12???25, said core comprising: (a) a central core region extending radially outwardly from a centerline to a radius 0 ?m?r0?2 ?m, and having a relative refractive index percent profile ?0(r) in % measured relative to pure silica, wherein ?0.1%??0(r)?0.1%, wherein the central core region has a maximum relative refractive index percent, ?0MAX; (b) a first annular core region surrounding and directly adjacent to the central core region and extending to an outer radius r1, wherein 4.8 ?m?r1?10 ?m, and having a relative refractive index percent profile, ?1(r) in % measured relative to pure silica, and a minimum relative refractive index, ?2MIN, and the relative refractive index measured at a radius r=2.5 ?m being: ?0.15??1(r=2.5 ?m)?0, and ?0MAX??1(r=2.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: November 20, 2012
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Dana Craig Bookbinder, Ming-Jun Li, Snigdharaj Kumar Mishra, Daniel Aloysius Nolan, Pushkar Tandon
  • Patent number: 8259385
    Abstract: A method for operating a wavelength-converted light source includes directing a pump beam having a fundamental wavelength from the laser source into an input facet of the wavelength conversion device such that a wavelength-converted output beam is emitted from an output facet of the wavelength conversion device in the field of view of an optical detector. A physical property of the wavelength conversion device is varied within individual ones of a succession of consecutive speckle reduction intervals having durations less than the integration time of the optical detector. The physical property of the wavelength conversion device is varied by an amount that is sufficient to change in a phase-matched (PM) wavelength of the wavelength conversion device. The fundamental wavelength of the pump beam is thereafter adjusted based on the change in the PM wavelength to maintain an efficiency of the wavelength conversion in the wavelength conversion device.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: September 4, 2012
    Assignee: Corning Incorporated
    Inventors: Martin Hempstead, Rostislav Vatchev Roussev, David Lee Weidman
  • Patent number: 8257603
    Abstract: Methods are provided for laser patterning a partial depth surface portion of a glass body by controlling the amount of stress induced in the glass body. A laser beam is directed along an impinged path on the surface portion of the glass body to heat the glass body to form a swell. The glass body is then cooled and etched. The surface portion of the glass body is heated above the strain point at a heating rate HR to form a swell. The heating rate HR is a function of a target temperature T and an exposure time of the output laser beam. The exposure time is controlled to reach a target temperature above the softening point of the glass body and does not require a power density that would lead to laser ablation of the surface portion. The surface portion is cooled below the strain point to induce regions of localized stress. The unablated surface portion is etched while in a state of laser-induced localized stress to form a patterned glass body.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: September 4, 2012
    Assignee: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Joseph Francis Schroeder, III
  • Patent number: 8230704
    Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: July 31, 2012
    Assignee: Corning Incorporated
    Inventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas A Pedersen, Massoud Rahiminejad, Bruce Warren Reding
  • Patent number: 8233760
    Abstract: A method for making low PMD fiber comprising the steps of: (i) making an initial fiber preform; (ii) modifying said initial fiber preform to introduce higher birefringence than that of the initial fiber preform into modified preform; and (iii) drawing an optical fiber from the modified preform and bi-directionally spinning the drawn fiber during draw.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: July 31, 2012
    Assignee: Corning Incorporated
    Inventors: Xin Chen, Timothy Leonard Hunt, Joohyun Koh, Ming-Jun Li, Daniel Aloysius Nolan
  • Patent number: 8197979
    Abstract: A solid oxide fuel cell comprising a thin ceramic electrolyte sheet having an increased street width is disclosed. Also disclosed are solid oxide fuel cells comprising: a substantially flat ceramic electrolyte sheet, a substantially flat ceramic electrolyte sheet having a seal area of greater thickness than the active area of the electrolyte sheet, a ceramic electrolyte sheet that overhangs the seal area, a ceramic electrolyte sheet and at least one substantially flat border material, and a border material having a non-linear edge. Methods of making a solid oxide fuel cell in accordance with the disclosed embodiments are also disclosed. Also disclosed are methods of making a solid oxide fuel cell wherein the seal has a uniform thickness, wherein the seal is heated to remove a volatile component prior to sealing, and wherein the distance between the frame and the ceramic electrolyte sheet of the device is constant.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: June 12, 2012
    Assignee: Corning Incorporated
    Inventors: Michael Edward Badding, Jacqueline Leslie Brown, Steven F Hoysan, Thomas Dale Ketcham, Scott Christopher Pollard, Dell Joseph St Julien, Sujanto Widjaja
  • Patent number: 8198112
    Abstract: In accordance with one embodiment of the present disclosure, a process of manufacturing a semiconductor laser diode comprising a gain section, a QWI output window, and QWI waveguide areas is provided. The QWI waveguide areas are fabricated using quantum well intermixing and define a QWI waveguide portion in the QWI output window of the laser diode. The QWI output window is transparent to the lasing wavelength ?L. The QWI waveguide portion in the QWI output window is characterized by an energy bandgap that is larger than an energy bandgap of the gain section such that the band gap wavelength ?QWI in the QWI waveguide portion and the QWI output window is shorter than the lasing wavelength ?L. The QWI output window is characterized by a photoluminescent wavelength ?PL. The manufacturing process comprises a ?PL screening protocol that determines laser diode reliability based on a comparison of the lasing wavelength ?L and the photoluminescent wavelength ?PL of the QWI output window.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: June 12, 2012
    Assignee: Corning Incorporated
    Inventors: Chwan-Yang Chang, Chien-Chih Chen, Martin Hai Hu, Hong Ky Nguyen, Chung-En Zah
  • Patent number: 8179933
    Abstract: Particular embodiments of the present disclosure relate systems and methods for evaluating visible light sources. According to one embodiment, a method of evaluating a visible light source including a semiconductor laser having a gain section, a wavelength selective section, and a phase section includes applying a gain drive signal to the gain section of the semiconductor laser at a gain modulation frequency, and applying a triangular wave drive signal to the wavelength selective section of the semiconductor laser at a wavelength selective modulation frequency that is greater than the gain modulation frequency. The light source emits a plurality of optical output pulses. Output power values of the optical output pulses at a selected wavelength are detected. The output power value of one or more selected output pulses is compared with an output power threshold value to generate an indication of whether the visible light source satisfies an output power specification.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 15, 2012
    Assignee: Corning Incorporated
    Inventor: Steven Joseph Gregorski
  • Patent number: 8135254
    Abstract: A microstructured optical fiber for transmitting optical signals comprised of light, the optical fiber comprising: a core region disposed about a longitudinal centerline and having a refractive index profile with a first refractive index, and a cladding region surrounding the core region, the cladding region comprising an annular void-containing region comprised of non-periodically disposed voids; wherein maximum void diameter in nm is given by Dmax and the maximum void length in cm is not greater than 2.5×105×(dmax)?1.7.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: March 13, 2012
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Robert Brett Desorcie, Ming-Jun Li, Peter Joseph Ronco, Pushkar Tandon
  • Patent number: 8130433
    Abstract: Particular embodiments relate generally to systems and methods of reducing the appearance of speckle in laser projection images. According to one embodiment, a laser projection system includes a light source, scanning optics and spinning optics. The light source includes at least one laser configured to emit an output beam. The scanning optics is positioned in an optical path of the output beam and configured to scan the output beam across a plurality of image pixels onto the spinning optics. The spinning optics is configured to create a virtual image of the scanning optics, translate the virtual image and change the angle of incidence of the output beam. The laser projection system is programmed to generate at least a portion of a scanned laser image, execute the translation of the virtual image by moving the spinning optics, and compensate for a relative image shift resulting from the translated virtual image.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: March 6, 2012
    Assignee: Corning Incorporated
    Inventor: Jacques Gollier
  • Patent number: 8094300
    Abstract: A method of controlling an optical package is provided where the average power density of the output beam of the semiconductor laser on the input facet of the wavelength conversion device in a relatively high power wavelength conversion mode exceeds the power density of the output beam of the semiconductor laser on the input facet of the wavelength conversion device in a relatively low power contaminant removal mode. In the relatively high power wavelength conversion mode, the adjustable optical components are utilized to correlate an optimum intensity value of a wavelength-converted output of the wavelength conversion device with optimum coordinates representing the position of the output beam of the semiconductor laser on the waveguide portion of the input facet of the wavelength conversion device.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: January 10, 2012
    Assignee: Corning Incorporated
    Inventor: Uta-Barbara Goers
  • Patent number: 8094355
    Abstract: A laser projection system comprises: (i) a coherent light source including at least one laser configured to emit an output beam carrying signal data; (ii) a scanning optics, the scanning optics comprising at least one scanning reflector, the scanning reflector positioned in an optical path of the output beam; and (iii) a rotating polygon prism; wherein (a) the scanning reflector is configured to direct the output beam towards the polygon prism and scan the output beam across a projection surface; and (b) the polygon prism is configured to transmit the scanned output beam through its body, and create a virtual image of the scanning reflector, such that said virtual image of the scanning reflector is moving when said polygon prism rotates.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: January 10, 2012
    Assignee: Corning Incorporated
    Inventor: Jacques Gollier
  • Patent number: 8077367
    Abstract: Particular embodiments relate generally to laser projection systems and, more particularly, to systems and methods of reducing the appearance of speckle in laser projection images. According to one embodiment, a laser projection system comprising a light source and scanning optics is provided. The scanning optics include a plurality of frame generating optics configured to scan the output beam across a given projection surface to generate an image frame. The frame generating actuators are spatially separated such that output beams scanned by the frame generating actuators illuminate each common pixel portion of the image frames at a different incidence angle. The scanning optics also include an actuator selector positioned in an optical path of the output beam and configured to direct the output beam towards a selected one of the plurality of frame generating actuators.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: December 13, 2011
    Assignee: Corning Incorporated
    Inventor: Jacques Gollier
  • Patent number: 8073021
    Abstract: A method for operating a frequency converted light source includes sweeping a wavelength control signal of a semiconductor laser over an initial signal range and measuring an optical power of an output beam emitted from a wavelength conversion device coupled to the semiconductor laser. The wavelength control signal of the semiconductor laser may then be swept over at least one truncated signal range and the optical power of the resulting output beam is measured. The at least one truncated signal range may be centered on a point corresponding to a maximum power of the output beam of the sweep of the wavelength control signal over the preceding signal range. An operational signal range for the wavelength control signal is determined such that a midpoint of the operational signal range corresponds to the maximum optical power of the resulting output beam of the sweep over the preceding signal range.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: December 6, 2011
    Assignee: Corning Incorporated
    Inventors: Vikram Bhatia, Dragan Pikula, Madhan Mothi Raj
  • Patent number: 8053139
    Abstract: The present invention provides structures and methods that utilize fuel reformation to assist in thermal management of a channel-less SOFC at the device cell and/or stack assembly level. At the device level, passive and/or active control of unreformed fuel, or a mixture of reformed and unreformed fuel, is used to inject fuel in a distributed manner along the anode chamber of the channel-less SOFC. The injected fuel can be controlled in its composition, pressure, velocities, and/or flow rates. Additionally, present invention provides thermal management across a plurality of fuel cells in a stack assembly by actively controlling fuel composition, pressure, velocities, and/or flow rates provided to fuel inlets of the fuel cells.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 8, 2011
    Assignee: Corning Incorporated
    Inventors: Yi Jiang, Scott Christopher Pollard, Dell Joseph St Julien, Cameron Wayne Tanner
  • Patent number: 8036508
    Abstract: A method for aligning an opto-electronic component assembly (OECA) on a substrate includes positioning a substrate on an assembly surface and positioning an OECA on the substrate such that a first OECA alignment face projects from a first substrate alignment face. The substrate and the OECA are advanced towards a contact face of a first assembly alignment mechanism such that the first substrate alignment face contacts the contact face of the first assembly alignment mechanism after the first OECA alignment face contacts the contact face. The OECA is displaced relative to the first substrate alignment face when the first OECA alignment face contacts the contact face and the substrate continues to move towards the contact face thereby aligning the OECA on the substrate relative to the first substrate alignment face.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: October 11, 2011
    Assignee: Corning Incorporated
    Inventors: Venkata Adiseshaiah Bhagavatula, Satish Chandra Chaparala, John Himmelreich
  • Patent number: 8011208
    Abstract: According to an embodiment of the invention a method of manufacturing optical fiber cane comprises the steps of: (i) providing a core rod manufactured of relatively low viscosity glass; (ii) depositing SiO2 based soot around the core rod to form a soot preform, the soot being of relatively high viscosity material such that the softening point of the low viscosity glass is at least 200° C. lower than the viscosity of the high viscosity outer core region; and (iii) consolidating the soot of the soot preform by exposure to hot zone at temperatures of 1000° C.-1600° C. The soot is consolidated by heating the outer portion of the soot preform at a relatively fast heating rate, the heating rate being sufficient to densify the soot, so as to render the densified material with enough rigidity to confine the heated core rod and to prevent the heated core rod from puddling.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: September 6, 2011
    Assignee: Corning Incorporated
    Inventors: Jitendra Balakrishnan, Samir Khanna, Chukwuemeka Benneth Onuh, Sonya Marie Raney, Pushkar Tandon, Dana Craig Bookbinder