Patents by Inventor Oleg Mitrofanov
Oleg Mitrofanov 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: 11749694Abstract: A theoretically perfectly absorbing photoconductive all-dielectric metasurface is provided. This metasurface can improve the efficiency and performance of ultrafast photoconductive switches and detectors. In an embodiment, the metasurface is incorporated in photoconductive THz switches or detectors. In embodiments, the metasurface is constituted by a network of gallium arsenide resonators. Each resonator supports two degenerate and critically coupled magnetic dipole modes. Simultaneous excitation of these two modes leads to theoretically close-to-perfect optical absorption near the resonant wavelength.Type: GrantFiled: July 30, 2020Date of Patent: September 5, 2023Assignees: National Technology & Engineering Solutions of Sandia, LLC, UCL Business LtdInventors: Igal Brener, Polina Vabishchevich, Oleg Mitrofanov
-
Patent number: 11063927Abstract: Techniques for an identity-aware load balancer (ALB) are described. An identity-aware ALB can securely authenticate users when accessing web-based applications accessed through the ALB, or a node of the ALB. An application owner can configure an authentication action in the ALB. When a request for the application is received, the ALB inspects the request for a session cookie to determine whether the requesting user is logged-in. If the request includes a session cookie, the ALB can decrypt the session cookie and provide identity information with the request to the application. If no session cookie is included, or if the session cookie is expired, the ALB can authenticate the user with an identity provider specified in the authentication action. Integrating authentication into an ALB simplifies application development and maintenance, and improves security, since fewer changes to the application stack reduce the chances of errors being introduced.Type: GrantFiled: May 2, 2018Date of Patent: July 13, 2021Assignee: Amazon Technologies, Inc.Inventors: Lodaya Varun Mukesh, Hamza Muhammad Arain, Anurag Sanjay Katey, Jing Gao, Alexander Ray Curtis, Oleg Mitrofanov, Prerna Rustagi
-
Patent number: 10540270Abstract: Systems and methods are disclosed herein for performing automated testing of software. Information characterizing a set of application programming interface (API) calls is associated with the software. Dependencies between the API calls are determined using the information and a representation is generated using the dependencies. The dependencies of the representation are verified by providing API requests to the API calls. The verified representation is provided for automated testing of an API and the associated API calls.Type: GrantFiled: January 25, 2018Date of Patent: January 21, 2020Assignee: Amazon Technologies, Inc.Inventors: Osman Surkatty, Josh Phelan Dukes, Khai Tran, Oleg Mitrofanov
-
Patent number: 9297878Abstract: Apparatus including: an optical waveguide bundle including a plurality of optical waveguides substantially aligned along a waveguide bundle axis, each optical waveguide having a longitudinal core configured to transmit light; a plurality of the optical waveguides each including a Bragg reflector, the Bragg reflectors configured to couple light incident from a direction substantially transverse to the waveguide bundle axis into the optical waveguides in a propagating mode in the longitudinal cores; and each of a plurality of longitudinal cores being in optical communication with an optical detector configured to detect light transmitted in the longitudinal cores.Type: GrantFiled: April 7, 2006Date of Patent: March 29, 2016Assignee: Alcatel LucentInventors: Gang Chen, Oleg Mitrofanov, Ronen Rapaport
-
Patent number: 7872468Abstract: An apparatus includes an optical resonator and a passive optical device. The optical resonator has first and second optical reflectors and an optical cavity interposed between the reflectors. The optical resonator includes an electro-optically responsive material. One of the reflectors is a distributed Bragg reflector. A passive optical device is configured to direct light through the first optical reflector. The optical resonator is configured to return a portion of the light through the first reflector.Type: GrantFiled: January 28, 2008Date of Patent: January 18, 2011Assignee: Alcatel-Lucent USA Inc.Inventor: Oleg Mitrofanov
-
Patent number: 7847364Abstract: Apparatus including flexible line extending along a length. Flexible line includes first charge carrier-transporting body, photosensitive body over first charge carrier-transporting body, and second charge carrier-transporting body over photosensitive body. Each of first and second charge carrier-transporting bodies and photosensitive body extend along at least part of length of flexible line. Photosensitive body is capable of near-infrared or visible light-induced generation of charge carrier pairs. Second charge carrier-transporting body is at least semi-transparent to near-infrared light or visible light.Type: GrantFiled: July 2, 2007Date of Patent: December 7, 2010Assignee: Alcatel-Lucent USA Inc.Inventors: Gang Chen, Ashok J. Maliakal, Oleg Mitrofanov, Ronen Rapaport, Nikolai Zhitenev
-
Publication number: 20100283451Abstract: An apparatus includes an optical resonator and a passive optical device. The optical resonator has first and second optical reflectors and an optical cavity interposed between the reflectors. The optical resonator includes an electro-optically responsive material. One of the reflectors is a distributed Bragg reflector. A passive optical device is configured to direct light through the first optical reflector. The optical resonator is configured to return a portion of the light through the first reflector.Type: ApplicationFiled: January 28, 2008Publication date: November 11, 2010Inventor: Oleg Mitrofanov
-
Patent number: 7608827Abstract: A T-ray imaging system employing an optical resonator that is adapted to be (i) positioned in the near-field proximity to a surface of a sample and (ii) pumped with pump light such that the pump light traverses a relatively thin layer of an electro-optically responsive material (EORM) located in the resonator's cavity. The imaging system has an optical detector that is adapted to detect at least a portion of the pump light reflected from the resonator, while the sample is illuminated with terahertz (THz) radiation such that the EORM is exposed to that radiation resulting in a detectable phase shift in the reflected pump light.Type: GrantFiled: February 9, 2006Date of Patent: October 27, 2009Assignee: Alcatel-Lucent USA Inc.Inventor: Oleg Mitrofanov
-
Publication number: 20090148979Abstract: A method includes forming a semiconducting region including polyaromatic molecules on a surface of a substrate. The method also includes forming over the region a substantially oxygen impermeable dielectric layer. The act of forming a semiconducting region includes exposing the molecules to oxygen while exposing the molecules to visible or ultraviolet light.Type: ApplicationFiled: February 11, 2009Publication date: June 11, 2009Applicants: Alcatel-Lucent USA, Incorporated, Columbia UniversityInventors: Christian Leo Kloc, Oleg Mitrofanov, Theo Max Siegrist, John Magnus Wikberg, David V. Lang
-
Publication number: 20090014825Abstract: Apparatus including flexible line extending along a length. Flexible line includes first charge carrier-transporting body, photosensitive body over first charge carrier-transporting body, and second charge carrier-transporting body over photosensitive body. Each of first and second charge carrier-transporting bodies and photosensitive body extend along at least part of length of flexible line. Photosensitive body is capable of near-infrared or visible light-induced generation of charge carrier pairs. Second charge carrier-transporting body is at least semi-transparent to near-infrared light or visible light.Type: ApplicationFiled: July 2, 2007Publication date: January 15, 2009Applicant: Lucent Technologies Inc.Inventors: Gang Chen, Ashok J. Maliakal, Oleg Mitrofanov, Ronen Rapaport, Nikolai Zhitenev
-
Patent number: 7336062Abstract: An apparatus includes an optical resonator and a passive optical device. The optical resonator has first and second optical reflectors and an optical cavity interposed between the reflectors. The optical resonator includes an electro-optically responsive material. One of the reflectors is a distributed Bragg reflector. A passive optical device is configured to direct light through the first optical reflector. The optical resonator is configured to return a portion of the light through the first reflector.Type: GrantFiled: November 8, 2004Date of Patent: February 26, 2008Assignee: Lucent Technologies Inc.Inventor: Oleg Mitrofanov
-
Publication number: 20070237473Abstract: Apparatus including: an optical waveguide bundle including a plurality of optical waveguides substantially aligned along a waveguide bundle axis, each optical waveguide having a longitudinal core configured to transmit light; a plurality of the optical waveguides each including a Bragg reflector, the Bragg reflectors configured to couple light incident from a direction substantially transverse to the waveguide bundle axis into the optical waveguides in a propagating mode in the longitudinal cores; and each of a plurality of longitudinal cores being in optical communication with an optical detector configured to detect light transmitted in the longitudinal cores.Type: ApplicationFiled: April 7, 2006Publication date: October 11, 2007Applicant: Lucent Technologies Inc.Inventors: Gang Chen, Oleg Mitrofanov, Ronen Rapaport
-
Publication number: 20070215863Abstract: A method includes forming a semiconducting region including polyaromatic molecules on a surface of a substrate. The method also includes forming over the region a substantially oxygen impermeable dielectric layer. The act of forming a semiconducting region includes exposing the molecules to oxygen while exposing the molecules to visible or ultraviolet light.Type: ApplicationFiled: March 15, 2006Publication date: September 20, 2007Applicants: Lucent Technologies Inc., Columbia UniversityInventors: Christian Kloc, Oleg Mitrofanov, Theo Siegrist, John Wikberg, David Lang
-
Publication number: 20070181811Abstract: A T-ray imaging system employing an optical resonator that is adapted to be (i) positioned in the near-field proximity to a surface of a sample and (ii) pumped with pump light such that the pump light traverses a relatively thin layer of an electro-optically responsive material (EORM) located in the resonator's cavity. The imaging system has an optical detector that is adapted to detect at least a portion of the pump light reflected from the resonator, while the sample is illuminated with terahertz (THz) radiation such that the EORM is exposed to that radiation resulting in a detectable phase shift in the reflected pump light.Type: ApplicationFiled: February 9, 2006Publication date: August 9, 2007Inventor: Oleg Mitrofanov
-
Publication number: 20060098695Abstract: An apparatus includes an optical resonator and a passive optical device. The optical resonator has first and second optical reflectors and an optical cavity interposed between the reflectors. The optical resonator includes an electro-optically responsive material. One of the reflectors is a distributed Bragg reflector. A passive optical device is configured to direct light through the first optical reflector. The optical resonator is configured to return a portion of the light through the first reflector.Type: ApplicationFiled: November 8, 2004Publication date: May 11, 2006Inventor: Oleg Mitrofanov