Patents by Inventor Hanjo RHEE

Hanjo RHEE 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: 11159131
    Abstract: An optoelectronic device that includes at least one adjustable optical damping member arranged upstream of a photodetector and damps the optical radiation passing to the photodetector. The device is configured so that an electrical output of an amplifier is connected directly or indirectly to the adjustable optical damping member. An output signal of the amplifier or a control signal formed therewith drives the optical damping member, and the photodetector, the amplifier and the damping member are integrated in the same semiconductor substrate.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: October 26, 2021
    Assignee: SICOYA GMBH
    Inventors: Ulrich Keil, Stefan Meister, Marco Vitali, Lei Yan, Chenhui Jiang, Aws Al-Saadi, Hanjo Rhee
  • Patent number: 10942253
    Abstract: A radar system having at least one radar transmission unit, at least one radar reception unit, a central unit, and a glass fiber for connecting these units, wherein the central unit has a central optical transmission unit to provide an optical radar driver signal, and wherein the at least one radar transmission unit has an optical reception unit and a radar transmitter, wherein the optical reception unit receives the optical radar driver signal and converts the optical radar driver signal into an electrical radar driver signal and provides the electrical radar driver signal for driving the radar transmitter, wherein the at least one radar reception unit includes a radar receiver, a mixer and an optical modulation unit. Also disclosed is an associated method.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 9, 2021
    Inventors: Thomas Schneider, Jörg Schöbel, Fabian Schwartau, Stefan Preußler, Hanjo Rhee, Christoph Scheytt, Michael Schwenkert, Thorsten Bagdonat, Heiko Kurz
  • Patent number: 10775561
    Abstract: An optoelectronic component includes a chip having a substrate and at least one optical waveguide integrated in the chip. The electro-optical component may be monolithically integrated in one or a plurality of semiconductor layers of the chip arranged on the substrate top side of the substrate, or on the substrate top side of the substrate. At least one electrical connection of the monolithically integrated electro-optical component is connected by means of a connection line to a conductor track connection situated below the substrate rear side. The connection line extends through a hole in the substrate from the electro-optical component to the conductor track connection situated below the substrate rear side.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: September 15, 2020
    Assignee: TECHNISCHE UNIVERSITÄT BERLIN
    Inventors: Stefan Meister, Hanjo Rhee, Christoph Theiss, Sebastian Kupijai
  • Publication number: 20200212853
    Abstract: The invention relates to a component (10) with a photodetector (PD) and an electrical amplifier (TIA) connected to the photodetector (PD), wherein the photodetector (PD) and the amplifier (TIA) are integrated in the same semiconductor substrate (11). According to the invention, at least one adjustable optical damping member (30) is arranged in front of the photodetector (PD), which damping member damps or at least can damp optical radiation arriving at the photodetector (PD), an electrical output (A) of the amplifier (TIA) is connected directly or indirectly to the adjustable optical damping member (30) and an output signal (AS) of the amplifier (TIA) or a control signal (ST) formed therewith controls the optical damping member (30), and the photodetector (PD), the amplifier (TIA) and the damping member (30) are integrated in the same semiconductor substrate (11).
    Type: Application
    Filed: June 13, 2018
    Publication date: July 2, 2020
    Applicant: Sicoya GmbH
    Inventors: Ulrich KEIL, Stefan MEISTER, Marco VITALI, Lei YAN, Chenhui JIANG, Aws AL-SAADI, Hanjo RHEE
  • Patent number: 10598859
    Abstract: An optoelectronic component including an optical waveguide integrated into a plane of the component. The optical waveguide configured to guide optical radiation in the plane. The component including a coupling element connected to the waveguide and coupling optical radiation into the waveguide along the main coupling path. The degree of coupling efficiency of the coupling element is less than one in respect to the main coupling path. The coupling element outputs optical loss radiation along a secondary coupling path. The optical loss radiation is proportional to the radiation transferred along the main coupling path. The optoelectronic component includes a detector connected to the coupling element that registers the optical loss radiation and produces a detector signal. The optoelectronic component includes a control unit configured to influence at least one operating variable of the optoelectronic component based on the detector signal.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: March 24, 2020
    Assignee: TECHNISCHE UNIVERSITÄT BERLIN
    Inventors: Stefan Meister, Hanjo Rhee, Christoph Theiss, Aws Al-Saadi
  • Patent number: 10488595
    Abstract: A photonic component that includes a photonically integrated chip and a fiber holder that is mechanically connected to said chip. The fiber holder includes at least one groove with an optical fiber laid therein. The chip includes a substrate whose substrate base material is a semiconductor material, an integrated optical waveguide that is integrated into one or more material layers of the chip, which layers are wave guiding and positioned on the substrate, a coupler formed in the optical waveguide or connected to said optical waveguide, particularly a grating coupler, and an optical diffraction and refraction structure that is integrated into one or more material layers of the chip which are positioned above the optical coupler when viewed from the substrate, and that shapes the beam prior to its being coupled into the waveguide or after being coupled out of the waveguide.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 26, 2019
    Assignee: Sicoya GmbH
    Inventors: Moritz Grehn, Sven Otte, Christoph Theiss, Stefan Meister, David Selicke, Hanjo Rhee
  • Publication number: 20190207368
    Abstract: The invention relates to a photonic component (1) having at least one semiconductor laser amplifier (200), which has at least one first mirror surface (210a) for coupling and/or decoupling optical radiation (S). The first mirror surface (210a) of the semiconductor laser amplifier (200) is coupled to a photonically integrated chip (100), wherein the chip (100) is arranged such that the chip can emit optical radiation (S) from the chip top side (O100) thereof in the direction of the first mirror surface (210a) and couple said radiation in the semiconductor laser amplifier (200), and wherein the emitting of the radiation (S) away from the chip top side (O100) occurs in the direction of the first mirror surface (210a) at an angle of 90°±20°, in particular perpendicular, to the chip top side (O100).
    Type: Application
    Filed: September 1, 2017
    Publication date: July 4, 2019
    Applicant: Sicoya GmbH
    Inventors: Stefan MEISTER, Hanjo RHEE
  • Publication number: 20190179082
    Abstract: The invention relates, inter alia, to a photonic component (1) that comprises a phonetically integrated chip (100) and a fibre holder (200) that is mechanically connected to said chip, said fibre holder comprising: at least one groove (210) with an optical fibre (220) laid therein, and at least one mirroring surface (230) which reflects the beam (S) of the fibre in the direction of the chip, and/or the beam of the chip in the direction of the fibre.
    Type: Application
    Filed: July 28, 2017
    Publication date: June 13, 2019
    Applicant: Sicoya GmbH
    Inventors: Moritz GREHN, Sven OTTE, Christoph THEISS, Stefan MEISTER, David SELICKE, Hanjo RHEE
  • Publication number: 20190162819
    Abstract: A radar system having at least one radar transmission unit, at least one radar reception unit, a central unit, and a glass fiber for connecting these units, wherein the central unit has a central optical transmission unit to provide an optical radar driver signal, and wherein the at least one radar transmission unit has an optical reception unit and a radar transmitter, wherein the optical reception unit receives the optical radar driver signal and converts the optical radar driver signal into an electrical radar driver signal and provides the electrical radar driver signal for driving the radar transmitter, wherein the at least one radar reception unit includes a radar receiver, a mixer and an optical modulation unit. Also disclosed is an associated method.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Inventors: Thomas SCHNEIDER, Jörg SCHÖBEL, Fabian SCHWARTAU, Stefan PREUSSLER, Hanjo RHEE, Christoph SCHEYTT, Michael SCHWENKERT, Thorsten BAGDONAT, Heiko KURZ
  • Publication number: 20190146151
    Abstract: The invention relates to an optoelectronic component (100) comprising a chip (110) comprising a substrate (12) and at least one optical waveguide (20) integrated in the chip (110). In one variant of the invention it is provided that an electro-optical component (30) is monolithically integrated in one or a plurality of semiconductor layers of the chip (110) arranged on the substrate top side (12a) of the substrate (12), or on the substrate top side (12a) of the substrate (12) and at least one electrical connection of the monolithically integrated electro-optical component (30) is connected by means of a connection line (41) to a conductor track connection (43) situated below the substrate rear side (12b), wherein the connection line (41) extends through a through hole (42) in the substrate (12) from the electro-optical component (30) to the conductor track connection (43) situated below the substrate rear side (12b).
    Type: Application
    Filed: September 28, 2015
    Publication date: May 16, 2019
    Applicant: TECHNISCHE UNIVERSITÄT BERLIN
    Inventors: Stefan MEISTER, Hanjo RHEE, Christoph THEISS, Sebastian KUPIJAI
  • Patent number: 10025030
    Abstract: An optoelectronic component including an optical waveguide, an integrated optical resonator, in which the waveguide or at least a portion of the waveguide is arranged, and a heat source which can increase the temperature of the resonator during operation. A web region adjoins laterally the waveguide when viewed in the longitudinal direction of the waveguide. The web region forms a jacket portion of the waveguide and has a smaller thickness than the waveguide. The heat source is thermally connected to the waveguide by means of the web region.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: July 17, 2018
    Assignee: Technische Universitaet Berlin
    Inventors: Stefan Meister, Hanjo Rhee, Christoph Theiss, Aws Al-Saadi, Marvin Henniges, Muhammad Atif
  • Publication number: 20180143378
    Abstract: An optoelectronic component including an optical waveguide integrated into a plane of the component. The optical waveguide configured to guide optical radiation in the plane. The component including a coupling element connected to the waveguide and coupling optical radiation into the waveguide along the main coupling path. The degree of coupling efficiency of the coupling element is less than one in respect to the main coupling path. The coupling element outputs optical loss radiation along a secondary coupling path. The optical loss radiation is proportional to the radiation transferred along the main coupling path. The optoelectronic component includes a detector connected to the coupling element that registers the optical loss radiation and produces a detector signal. The optoelectronic component includes a control unit configured to influence at least one operating variable of the optoelectronic component based on the detector signal.
    Type: Application
    Filed: May 3, 2016
    Publication date: May 24, 2018
    Applicant: Technische Universität Berlin
    Inventors: Stefan MEISTER, Hanjo RHEE, Christoph THEISS, Aws AL-SAADI
  • Patent number: 9817295
    Abstract: An injection modulator for modulation of optical radiation, having an optical waveguide and a diode structure, having at least two p-doped semiconductor portions, at least two n-doped semiconductor portions and at least one lightly or undoped intermediate portion between the p-doped and n-doped portions. The p-doped portions when viewed in the longitudinal direction of the waveguide are offset with respect to the n-doped portions and the diode structure is arranged in a resonance-free portion of the waveguide. The p-doped portions lie on one side of the waveguide, the n-doped portions lie on the other side of the waveguide and the intermediate portion lies in the center, each portion extends transversely with respect to the waveguide longitudinal direction in the direction of the waveguide center of the waveguide and no p-doped portion when viewed in the longitudinal direction of the waveguide overlaps any n-doped portion.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: November 14, 2017
    Assignees: TECHNISCHE UNIVERSITAT BERLIN, SICOYA GMBH
    Inventors: Stefan Meister, Aws Al-Saadi, Sebastian Kupijai, Christoph Theiss, Hanjo Rhee, Lars Zimmermann, David Stolarek
  • Publication number: 20170299939
    Abstract: An injection modulator for modulation of optical radiation, having an optical waveguide and a diode structure, having at least two p-doped semiconductor portions, at least two n-doped semiconductor portions and at least one lightly or undoped intermediate portion between the p-doped and n-doped portions. The p-doped portions when viewed in the longitudinal direction of the waveguide are offset with respect to the n-doped portions and the diode structure is arranged in a resonance-free portion of the waveguide. The p-doped portions lie on one side of the waveguide, the n-doped portions lie on the other side of the waveguide and the intermediate portion lies in the center, each portion extends transversely with respect to the waveguide longitudinal direction in the direction of the waveguide center of the waveguide and no p-doped portion when viewed in the longitudinal direction of the waveguide overlaps any n-doped portion.
    Type: Application
    Filed: September 21, 2015
    Publication date: October 19, 2017
    Applicants: TECHNISCHE UNIVERSITAET BERLIN, SICOYA GMBH
    Inventors: Stefan MEISTER, Aws AL-SAADI, Sebastian KUPIJAI, Christoph THEISS, Hanjo RHEE, Lars ZIMMERMANN, David STOLAREK
  • Publication number: 20170242191
    Abstract: The invention relates, inter alia, to a photonically integrated chip (2) having a substrate (20), a plurality of material layers arranged on a top side (21) of the substrate (20), an optical waveguide which is integrated in one or more wave-guiding material layers of the chip (2), and a grating coupler (60) which is formed in the optical waveguide and causes beam deflection of radiation guided in the waveguide in the direction out of the layer plane of the wave-guiding material layer(s) or causes beam deflection of radiation to be coupled into the waveguide in the direction into the layer plane of the wave-guiding material layer(s).
    Type: Application
    Filed: September 25, 2015
    Publication date: August 24, 2017
    Applicants: Technische Universität Berlin, Sicoya GmbH
    Inventors: Hanjo RHEE, Marvin HENNIGES, Stefan MERSTER, Christoph THEISS, David SELICKE, David STOLAREK, Lars ZIMMERMANN, Harald H. RICHTER