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    Method and Device for Detecting Absolute or Relative Temperature and/or Absolute or Relative Wavelength
    2.
    发明申请
    Method and Device for Detecting Absolute or Relative Temperature and/or Absolute or Relative Wavelength 有权

    公开(公告)号：US20220178786A1

    公开(公告)日：2022-06-09

    申请号：US17545202

    申请日：2021-12-08

    Applicant: ADVA Optical Networking SE

    Inventor： Benjamin Wohlfeil ,  Gilda Raoof Mehrpoor

    IPC: G01M11/02 ,  G01K11/32 ,  G01M11/00

    Abstract: The invention relates to a method for detecting the absolute temperature or temperature changes and/or the absolute wavelength or wavelength changes of an optical probe signal using an optical detection device including an optical waveguide structure defining an optical input port adapted to receive the optical probe signal and a first and a second optical output port adapted to output a first and a second optical detection signal, respectively. As a response to the optical probe signal, the optical waveguide structure being configured in such a way that a first power transfer function characterizing the transmission of the optical probe signal from the optical input port to the first optical output port differs, with respect to its wavelength and temperature dependency, from a second power transfer function characterizing the transmission of the optical probe signal from the optical input port to the second optical output port. The method includes the steps of transmitting the optical probe signal having a predetermined, but not necessarily constant, wavelength to the optical input port; detecting the first and second optical detection signal at the first and second optical output port by means of a first a and second opto-electrical converter which create a first and second electrical signal corresponding to the optical power of the respective first or second optical detection signal; measuring values of the first and second electrical signal and determining an absolute temperature value or a value of a temperature change of the optical waveguide structure and/or an absolute wavelength value or a value of a wavelength change of the optical probe signal by using the values measured of the first and second electrical signal and a first and a second previously determined wavelength and temperature dependency of both the first and second power transfer function. The invention further relates to an optical detection device for implementing this method.

    Photonic Chip/Optical Device for Aligning and Connecting an Optical Fiber and a Photonic Integrated Waveguide and Method of its Production
    3.
    发明申请
    Photonic Chip/Optical Device for Aligning and Connecting an Optical Fiber and a Photonic Integrated Waveguide and Method of its Production 审中-公开

    公开(公告)号：US20180372960A1

    公开(公告)日：2018-12-27

    申请号：US15988379

    申请日：2018-05-24

    Applicant: ADVA Optical Networking SE

    Inventor： Benjamin Wohlfeil

    IPC: G02B6/36 ,  G02B6/42

    Abstract: A photonic chip includes a connecting means, a substrate, and a waveguide layer. The photonic integrated waveguide and the optical fiber each have a front end portion. The connecting means includes a groove configured to receive the front end portion of the optical fiber. The groove is essentially U-shaped in its cross section, and the groove has a bottom surface and two inner side surfaces. A least one of both inner side surfaces of the U-shaped groove has a coating of an elastic material configured to hold in place the optical fiber after it is inserted into the groove. The invention further relates to an optical device which includes a photonic chip and an optical fiber, as well as a method or production of such a photonic chip.

    Electro-optical assembly
    6.
    发明授权
    Electro-optical assembly 有权

    公开(公告)号：US11199657B2

    公开(公告)日：2021-12-14

    申请号：US16716895

    申请日：2019-12-17

    Applicant: ADVA OPTICAL NETWORKING SE

    Inventor： Benjamin Wohlfeil ,  Joerg-Peter Elbers ,  Rocco Matricardi ,  Richard Mainardi

    IPC: G02B6/44 ,  G02B6/122 ,  G02B6/42 ,  G02B6/28

    Abstract: An electro-optical assembly comprises a substrate having a support-surface, and a photonic integrated circuit (PIC) mounted with a contact surface on the support-surface. The (PIC) comprises an integrated optical waveguide structure defining at least two waveguide end faces, at an edge surface of the PIC, perpendicular to its contact surface, and forming optical ports. An optical coupling device, mounted with a contact surface on the support-surface, optically connects at least two optical fibers to the PIC and comprises an optical waveguide structure-defining at least two front waveguide end faces provided at a front edge surface thereof, perpendicular to its contact surface. The number of front waveguide end faces corresponds to the number of the waveguide end faces. The optical coupling device is positionable during an active positioning process to align the respective waveguide end faces. A method of manufacturing such an electro-optical assembly is also provided.

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