Patents by Inventor Frieder Heinrich Baumann

Frieder Heinrich Baumann 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: 7155083
    Abstract: A monolithic waveguide/MEMS switch is disclosed that has a waveguide portion and a MEMS mirror portion fabricated on a single substrate, such as a as a silicon-on-insulator wafer. The monolithic waveguide/MEMS switch adjusts the phase of an optical signal by varying the position of one or more moveable mirrors. The mirror portion includes a mirror having a reflective surface that is attached to at least one MEMS actuator to achieve in-plane motion of the mirror (moves parallel to a plane of said at least one waveguide). In one implementation, the MEMS actuator is embodied as a known comb drive actuator. The phase adjustment techniques of the present invention may be employed in various optical devices, including wavelength selective optical switches that support multiple optical channels.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: December 26, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Frieder Heinrich Baumann, Ho Bun Chan, Dan T. Fuchs, Howard Roy Stuart
  • Patent number: 7149378
    Abstract: A monolithic waveguide/MEMS switch is disclosed that has a waveguide portion and a MEMS mirror portion fabricated on a single substrate, such as a as a silicon-on-insulator wafer. The monolithic waveguide/MEMS switch adjusts the phase of an optical signal by varying the position of one or more moveable mirrors. The mirror portion includes a mirror having a reflective surface that is attached to at least one MEMS actuator to achieve in-plane motion of the mirror (moves parallel to a plane of said at least one waveguide). In one implementation, the MEMS actuator is embodied as a known comb drive actuator. The phase adjustment techniques of the present invention may be employed in various optical devices, including wavelength selective optical switches that support multiple optical channels.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: December 12, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Frieder Heinrich Baumann, Ho Bun Chan, Dan T. Fuchs, Howard Roy Stuart
  • Publication number: 20040156580
    Abstract: A monolithic waveguide/MEMS switch is disclosed that has a waveguide portion and a MEMS mirror portion fabricated on a single substrate, such as a as a silicon-on-insulator wafer. The monolithic waveguide/MEMS switch adjusts the phase of an optical signal by varying the position of one or more moveable mirrors. The mirror portion includes a mirror having a reflective surface that is attached to at least one MEMS actuator to achieve in-plane motion of the mirror (moves parallel to a plane of said at least one waveguide). In one implementation, the MEMS actuator is embodied as a known comb drive actuator. The phase adjustment techniques of the present invention may be employed in various optical devices, including wavelength selective optical switches that support multiple optical channels.
    Type: Application
    Filed: December 24, 2003
    Publication date: August 12, 2004
    Inventors: Frieder Heinrich Baumann, Ho Bun Chan, Dan T. Fuchs, Howard Roy Stuart
  • Patent number: 6751377
    Abstract: In accordance with the invention, a tunable, reconfigurable optical add-drop filter comprises a pair of optical waveguides optically coupled by a microring or microdisk resonator wherein the coupling distance between the resonator and at least one of the waveguides is micromechanically controllable. With this arrangement, the degree of coupling can be tuned after fabrication to provide high level extinction of dropped wavelengths and the filter can be dynamically reconfigured. Advantageously, laser radiation is provided to tune the resonant wavelength.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: June 15, 2004
    Assignee: Lucent Technologies Inc.
    Inventors: Frieder Heinrich Baumann, Mihaela Dinu, Howard Roy Stuart, James Albert Walker
  • Publication number: 20020172466
    Abstract: In accordance with the invention, a tunable, reconfigurable optical add-drop filter comprises a pair of optical waveguides optically coupled by a microring or microdisk resonator wherein the coupling distance between the resonator and at least one of the waveguides is micromechanically controllable. With this arrangement, the degree of coupling can be tuned after fabrication to provide high level extinction of dropped wavelengths and the filter can be dynamically reconfigured. Advantageously, laser radiation is provided to tune the resonant wavelength.
    Type: Application
    Filed: May 21, 2001
    Publication date: November 21, 2002
    Inventors: Frieder Heinrich Baumann, Mihaela Dinu, Howard Roy Stuart, James Albert Walker