Patents by Inventor Venkata Adiseshaiah Bhagavatula

Venkata Adiseshaiah Bhagavatula 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).

  • Publication number: 20130223787
    Abstract: Probes optical assemblies and probes for optical coherence tomography (OCT) applications are disclosed. The probe assembly includes an optical fiber, a stub lens and a light-deflecting member arranged in a cooperative optical relationship to define an optical path between the optical fiber end and an image plane that is folded by the light-deflecting member. The optical probe includes a transparent jacket that contains the optical probe assembly.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 29, 2013
    Inventors: Venkata Adiseshaiah Bhagavatula, John Himmelreich
  • Publication number: 20130044773
    Abstract: An optical source including a laser source and a waveguide is provided. The laser source includes a laser cavity having a laser optical path length extending from a DBR grating to a reflective laser output facet, and emits an output beam at a fundamental wavelength. The waveguide has an input facet and an output facet, and extends along a waveguide optical length from the input facet of the waveguide to the output facet of the waveguide. The input facet and the output facet of the waveguide are approximately normal with respect to an optical path of the output beam. The waveguide and the laser source are proximity coupled, and the waveguide optical length is an integer multiple of the laser optical path length.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Inventors: Venkata Adiseshaiah Bhagavatula, Jacques Gollier, Dmitri Vladislavovich Kuksenkov
  • Publication number: 20120189252
    Abstract: A receptacle ferrule assembly for a fiber optic receptacle connector. The receptacle ferrule assembly comprises a first lens with first second optical surfaces and a receptacle ferrule body having first and second ends. At least one monolithic optical system is formed in a monolithic receptacle ferrule body and includes a lens formed at the second end of monolithic receptacle ferrule body and an optical surface formed at the first end of monolithic receptacle ferrule body. The optical surface is situated adjacent to, and mated to the second optical surface of the first lens The monolithic optical system is configured, in conjunction with the first lens, to define a receptacle optical pathway from the second end of the monolithic optical system to the first surface of the first lens. According to some embodiments the first lens is a gradient index lens.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 26, 2012
    Inventors: Venkata Adiseshaiah Bhagavatula, Jeffery Alan DeMeritt, Davide Domenico Fortusini, Jacques Gollier, James Phillip Luther
  • Patent number: 8102887
    Abstract: Particular embodiments of the present disclosure bring an SHG crystal, or other type of wavelength conversion device, into close proximity with a laser source to eliminate the need for coupling optics, reduce the number of package components, and reduce package volume. According to one embodiment of the present disclosure, an optical package is provided comprising a laser source subassembly comprising a laser base and a wavelength conversion device subassembly comprising a converter base. The bonding interface of the laser base is bonded the complementary bonding interface of the converter base such that the laser output face can be proximity-coupled to the converter input face at an predetermined interfacial spacing x. Additional embodiments are disclosed and claimed.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: January 24, 2012
    Assignee: Corning Incorporated
    Inventors: Venkata Adiseshaiah Bhagavatula, Satish Chandra Chaparala, John Himmelreich, Lawrence Charles Hughes, Jr.
  • 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
  • Publication number: 20110129189
    Abstract: Embodiments of the present disclosure bring a wavelength conversion device into close proximity with a laser source to eliminate the need for coupling optics, reduce the number of package components, and reduce package volume. According to one embodiment of the present disclosure, an optical package is provided comprising a laser diode chip and a clad metal substrate. The clad metal substrate comprises a clad metal region that is mechanically coupled to a base metal region. The laser diode chip is coupled to the clad metal region. The clad metal region comprises a clad metal material having a thermal conductivity that is greater than a thermal conductivity of the base metal material. The clad metal region further comprises a coefficient of thermal expansion that is approximately equal to a coefficient of thermal expansion of the base metal material and is greater than a coefficient of thermal expansion of the laser diode chip.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 2, 2011
    Inventors: Venkata Adiseshaiah Bhagavatula, Satish Chandra Chaparala, John Himmelreich, Lawrence Charles Hughes, JR.
  • Publication number: 20110069929
    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: Application
    Filed: September 21, 2009
    Publication date: March 24, 2011
    Inventors: Venkata Adiseshaiah Bhagavatula, Satish Chandra Chaparala, John Himmelreich
  • Publication number: 20100303109
    Abstract: Particular embodiments of the present disclosure bring an SHG crystal, or other type of wavelength conversion device, into close proximity with a laser source to eliminate the need for coupling optics, reduce the number of package components, and reduce package volume. According to one embodiment of the present disclosure, an optical package is provided comprising a laser source and a wavelength conversion device. The laser source is positioned such that the output face of the laser source is proximity-coupled to a waveguide portion of the input face of the wavelength conversion device. The input face of the wavelength conversion device comprises an ?-cut facet and ?-cut facet. The ?-cut facet of the input face is oriented at a horizontal angle ?, relative to the waveguide of the wavelength conversion device to permit proximity coupling of the output face of the laser source and the input face of the wavelength conversion device.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 2, 2010
    Inventors: Venkata Adiseshaiah Bhagavatula, Satish Chandra Chaparala, John Himmelreich, Lawrence Charles Hughes, JR.
  • Publication number: 20100303110
    Abstract: Particular embodiments of the present disclosure bring an SHG crystal, or other type of wavelength conversion device, into close proximity with a laser source to eliminate the need for coupling optics, reduce the number of package components, and reduce package volume. According to one embodiment of the present disclosure, an optical package is provided comprising a laser source subassembly comprising a laser base and a wavelength conversion device subassembly comprising a converter base. The bonding interface of the laser base is bonded the complementary bonding interface of the converter base such that the laser output face can be proximity-coupled to the converter input face at an predetermined interfacial spacing x. Additional embodiments are disclosed and claimed.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 2, 2010
    Inventors: Venkata Adiseshaiah Bhagavatula, Satish Chandra Chaparala, John Himmelreich, Lawrence Charles Hughes, JR.
  • Publication number: 20100159242
    Abstract: A cane having optical properties includes: a core formed of a semiconductor material; and a transparent cladding formed of glass, glass-ceramic, or polymer coaxially oriented about the core, the cane may be used to produce a photovoltaic device, including: a semiconductor core including at least one p-n junction, defined by respective n-type and p-type regions; a substantially transparent cladding in coaxial relationship with the semiconductor core, forming a longitudinally oriented cane; and first and second electrodes, each being electrically coupled to a respective one of the n-type and p-type regions.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Venkata Adiseshaiah Bhagavatula, David John McEnroe
  • Publication number: 20100154877
    Abstract: A cane having optical properties includes: a core formed of a semiconductor material; and a transparent cladding formed of glass, glass-ceramic, or polymer coaxially oriented about the core, the cane may be used to produce a photovoltaic device, including: a semiconductor core including at least one p-n junction, defined by respective n-type and p-type regions; a substantially transparent cladding in coaxial relationship with the semiconductor core, forming a longitudinally oriented cane; and first and second electrodes, each being electrically coupled to a respective one of the n-type and p-type regions.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Venkata Adiseshaiah Bhagavatula, David John McEnroe
  • Publication number: 20100129647
    Abstract: A method of assembling optoelectronic and/or photonic components, said method comprising: (i) providing at least two optoelectronic and/or photonic components; (ii) aligning and situating these components relative to one another and in close proximity with one another so as to: (a) provide optical coupling between these components; and (b) maintain the distance d between the adjacent parts of these components, where d is 0 to 100 ?m; (iii) adhering these components to one another with while maintaining optical coupling therebetween; and (iv) laser welding these components together while maintaining optical coupling therebetween.
    Type: Application
    Filed: November 24, 2008
    Publication date: May 27, 2010
    Inventors: Venkata Adiseshaiah Bhagavatula, Roy Joseph Bourcier, Satish Chandra Chaparala, John Himmelreich
  • Publication number: 20100108133
    Abstract: A substantially transparent substrate having first and second major surfaces and a plurality of side surfaces; a thin-film semiconductor layer coupled to the first major surface of the substrate and including first and second major surfaces and at least one photo-sensitive p-n junction therein; and a light directing feature operable to cause incident light to propagate through the substrate and into the semiconductor layer in a waveguide mode such that the light reflects a plurality of times between the first and second major surfaces of the semiconductor layer and impinges upon the p-n junction a plurality of times
    Type: Application
    Filed: November 3, 2008
    Publication date: May 6, 2010
    Inventors: Venkata Adiseshaiah Bhagavatula, Glenn Eric Kohnke
  • Patent number: 6778747
    Abstract: Disclosed is a single mode waveguide fiber and a method of making a single mode or multimode waveguide fiber which has an azimuthally and radially asymmetric core. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: August 17, 2004
    Assignee: Corning Incorporated
    Inventors: Venkata Adiseshaiah Bhagavatula, Robert Martin Hawk
  • Patent number: 6259841
    Abstract: A coupling for an optical device that disperses wavelengths along a focal line includes reflective surfaces that fold light out of a plane propagation and into alignment with an array of inputs or outputs. Some of the reflective surfaces are offset from the focal line so that the inputs or outputs can be spaced closer together in a dimension along the focal line.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: July 10, 2001
    Assignee: Corning Incorporated
    Inventor: Venkata Adiseshaiah Bhagavatula
  • Patent number: 6111674
    Abstract: Optical signals are dispersed according to their wavelength by an optical path length difference generator that couples a single pathway conveying a plurality of different wavelength signals to multiple pathways separately conveying the different wavelength signals. The optical path length generator can be formed by a reflective stack having a plurality of partially reflective surfaces for reflecting successive portions of the energy of each of the different wavelength signals along different length optical paths.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: August 29, 2000
    Assignee: Corning Incorporated
    Inventor: Venkata Adiseshaiah Bhagavatula
  • Patent number: 5909529
    Abstract: A core layer of a planar gradient-index waveguide lens is formed from a longitudinal section of a graded-index blank. The longitudinal section is mounted on a substrate that provides support for subsequent operations on the longitudinal section and that also functions as a cladding layer of the waveguide lens. The longitudinal section can be machined or redrawn in a furnace together with the substrate to a final thickness dimension.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: June 1, 1999
    Assignee: Corning Incorporated
    Inventor: Venkata Adiseshaiah Bhagavatula