Patents by Inventor Jurg Leuthold
Jurg Leuthold 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: 11499915Abstract: A terahertz device includes a first waveguide, which is a plasmonic waveguide, having a first core with a nonlinear material, such as a ferroelectric material, and having a cladding with a first cladding portion including, at a first interface with the first core, a first cladding material that is an electrically conductive material. The terahertz device can include an antenna having a first and a second arm (for receiving or for emitting or for both, receiving and emitting electromagnetic waves in the terahertz range); a first and a second electrode arranged close to the first waveguide.Type: GrantFiled: March 20, 2018Date of Patent: November 15, 2022Assignee: ETH ZÜRICHInventors: Yannick Salamin, Ping Ma, Ueli Koch, Jürg Leuthold
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Publication number: 20220307974Abstract: A photodetector comprises a substrate, and supported by the substrate, a configuration to act as optical resonator and to absorb incident radiation of a band, including infrared. The configuration comprises: a resonant frontside structure facing the incident radiation; a backside structure and arranged between the frontside structure and the substrate; and a layer of an active material made from a semiconducting material, and configured to convert at least part of the incident radiation of the band into charge carriers. The frontside structure or the backside structure is made from electrically conducting material and is in contact with the active material. The configuration is configured to selectively absorb the incident radiation of the band. The frontside structure or the backside structure that is in contact with the active material is contacted by electrical contacts for sensing the charge carriers in the active material. The active material comprises amorphous or polycrystalline material.Type: ApplicationFiled: June 19, 2020Publication date: September 29, 2022Applicant: SENSIRION AGInventors: Alexander DORODNYY, Alexander LOCHBAUM, Jürg LEUTHOLD, Lukas BÜRGI, Silvio GRAF
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Publication number: 20200408677Abstract: A terahertz device includes a first waveguide, which is a plasmonic waveguide, having a first core with a nonlinear material, such as a ferroelectric material, and having a cladding with a first cladding portion including, at a first interface with the first core, a first cladding material that is an electrically conductive material. The terahertz device can include an antenna having a first and a second arm (for receiving or for emitting or for both, receiving and emitting electromagnetic waves in the terahertz range); a first and a second electrode arranged close to the first waveguide.Type: ApplicationFiled: March 20, 2018Publication date: December 31, 2020Inventors: Yannick Salamin, Ping Ma, Ueli Koch, Jürg Leuthold
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Patent number: 10571724Abstract: An electro-optic element includes a first waveguide, which is a plasmonic waveguide, including a first core having a ferroelectric material and a cladding having a first cladding portion. The first cladding portion includes, at a first interface with the ferroelectric material, a first cladding material. The electro-optic element includes a first and a second electrode for producing an electric field in the ferroelectric material when a voltage is applied between the first and second electrodes, for modulating a real part of a refractive index of the ferroelectric material. The element includes, in addition, a crystalline substrate on which the ferroelectric material is epitaxially grown with zero or one or more intermediate layers present between the substrate and the ferroelectric material. The element may have a second waveguide, which is a photonic waveguide, including for enabling evanescent coupling between the first and second waveguides.Type: GrantFiled: March 30, 2016Date of Patent: February 25, 2020Assignee: ETH ZÜRICHInventors: Ping Ma, Jürg Leuthold
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Patent number: 10444076Abstract: An infrared device comprises a substrate (1), and arranged on or in the substrate (1) a configuration (3) for one of selectively emitting and selectively absorbing infrared radiation of a band, the configuration (3) comprising a pattern made from an electrically conducting material on a first level (L1), an electrically conducting film (33) on a second level (L2), and a dielectric layer (24) between the pattern and the film (33). One or more of a heater (4) for heating the configuration (3), and a thermal sensor (5) arranged for sensing the selective infrared radiation of the band absorbed by the configuration (3) on or in the substrate.Type: GrantFiled: November 26, 2015Date of Patent: October 15, 2019Assignee: Sensirion AGInventors: Martin Winger, Marc Von Waldkirch, Matthias Streiff, Alexander Lochbaum, Jürg Leuthold
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Patent number: 10276734Abstract: The present invention relates to plasmonic components, more particularly plasmonic waveguides, and to plasmonic photodetectors that can be used in the field of microoptics and nanooptics, more particularly in highly integrated optical communications systems in the infrared range (IR range) as well as in power engineering, e.g. photovoltaics in the visible range. The present invention also specifies a method for producing a plasmonic component, more particularly for photodetection on the basis of internal photoemission.Type: GrantFiled: May 27, 2015Date of Patent: April 30, 2019Assignee: Karlsruher Institut Für TechnologieInventors: Sascha Mühlbrandt, Jürg Leuthold, Manfred Kohl
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Publication number: 20180356290Abstract: An infrared device comprises a substrate (1), and arranged on or in the substrate (1) a configuration (3) for one of selectively emitting and selectively absorbing infrared radiation of a band, the configuration (3) comprising a pattern made from an electrically conducting material on a first level (L1), an electrically conducting film (33) on a second level (L2), and a dielectric layer (24) between the pattern and the film (33). One or more of a heater (4) for heating the configuration (3), and a thermal sensor (5) arranged for sensing the selective infrared radiation of the band absorbed by the configuration (3) on or in the substrate.Type: ApplicationFiled: November 26, 2015Publication date: December 13, 2018Inventors: Martin WINGER, Marc VON WALDKIRCH, Matthias STREIFF, Alexander LOCHBAUM, Jürg LEUTHOLD
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Publication number: 20180081204Abstract: An electro-optic element includes a first waveguide, which is a plasmonic waveguide, including a first core having a ferroelectric material and a cladding having a first cladding portion. The first cladding portion includes, at a first interface with the ferroelectric material, a first cladding material. The electro-optic element includes a first and a second electrode for producing an electric field in the ferroelectric material when a voltage is applied between the first and second electrodes, for modulating a real part of a refractive index of the ferroelectric material. The element includes, in addition, a crystalline substrate on which the ferroelectric material is epitaxially grown with zero or one or more intermediate layers present between the substrate and the ferroelectric material. The element may have a second waveguide, which is a photonic waveguide, including for enabling evanescent coupling between the first and second waveguides.Type: ApplicationFiled: March 30, 2016Publication date: March 22, 2018Inventors: Ping Ma, Jürg Leuthold
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Publication number: 20170194514Abstract: The present invention relates to plasmonic components, more particularly plasmonic waveguides, and to plasmonic photodetectors that can be used in the field of microoptics and nanooptics, more particularly in highly integrated optical communications systems in the infrared range (IR range) as well as in power engineering, e.g. photovoltaics in the visible range. The present invention also specifies a method for producing a plasmonic component, more particularly for photodetection on the basis of internal photoemission.Type: ApplicationFiled: May 27, 2015Publication date: July 6, 2017Inventors: Sascha MÜHLBRANDT, Jurg LEUTHOLD, Manfred KOHL
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Patent number: 8081851Abstract: A high-index contrast waveguide component is presented, which is based on the fast changing of the transmission properties of an optical waveguide by applying electric voltages, or by embossing electric currents. The waveguide consists of a high-refractive waveguide core surrounded by a low-refractive surrounding material, which at least area by area has electro-optical properties. By applying a voltage to completely or partially optically transparent electrodes, an electric field is generated having a strong overlap with the optical mode, being in interaction with it, and therefore changing the transmission properties of the waveguide. The transparent electrodes or supply line areas are laminar, connected at low resistance with conductor paths of high conductivity by means of structures continually repeated along the propagation direction. Thus, it is possible for example to very fast load the capacity being effective between the electrodes, and to thus achieve a high electric band width.Type: GrantFiled: September 14, 2007Date of Patent: December 20, 2011Assignee: Karlsruher Institut fur TechnologieInventors: Christian Koos, Jurg Leuthold, Wolfgang Freude, Jan Michael Brosi
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Publication number: 20100021124Abstract: A high-index contrast waveguide component is presented, which is based on the fast changing of the transmission properties of an optical waveguide by applying electric voltages, or by embossing electric currents. The waveguide consists of a high-refractive waveguide core surrounded by a low-refractive surrounding material, which at least area by area has electro-optical properties. By applying a voltage to completely or partially optically transparent electrodes, an electric field is generated having a strong overlap with the optical mode, being in interaction with it, and therefore changing the transmission properties of the waveguide. The transparent electrodes or supply line areas are laminar, connected at low resistance with conductor paths of high conductivity by means of structures continually repeated along the propagation direction. Thus, it is possible for example to very fast load the capacity being effective between the electrodes, and to thus achieve a high electric band width.Type: ApplicationFiled: September 14, 2007Publication date: January 28, 2010Inventors: Christian Koos, Jurg Leuthold, Wolfgang Freude, Jan Michael Brosi
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Publication number: 20070036542Abstract: The invention relates to a method for recognizing the integrity of an optical access line, wherein an optical measuring signal is sent from a measuring unit, and wherein the reflected echoes are searched through for an echo that is characteristic for a reflector applied at the end of the access line. The invention further relates to an optical system, a tree-shaped access network, a reflector, and an optical transmit and receive unit.Type: ApplicationFiled: July 24, 2006Publication date: February 15, 2007Inventors: Thomas Pfeiffer, Wolfgang Freude, Jurg Leuthold
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Patent number: 6437905Abstract: A wavelength converter with a monolithically integrated delay loop in a delayed interference configuration that needs only one SOA, only one in and one output fiber. Unlike prior-art hybrid wavelength converters, our inventive device has a monolithically integrated delay loop utilizing an asymmetric splitting ratio.Type: GrantFiled: July 7, 2000Date of Patent: August 20, 2002Assignee: Lucent Technologies Inc.Inventors: Charles H Joyner, Jurg Leuthold