Patents by Inventor Keld Theodor

Keld Theodor 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).

  • Alignment of multi-channel diffractive WDM device
    Patent number: 6842239
    Abstract: A method and apparatus are presented for aligning a diffractive WDM device that includes i) a multi-channel, light handling device having a selected channel spacing and ii) a multi-channel signal input unit. The method includes adjusting a direction of incidence of an optical signal from the input unit on at least a first diffracting element of the WDM device so as to set an actual optical channel spacing at an output region of the WDM device to be approximately equal to the selected channel spacing of the multi-channel, light handling device. In the apparatus, the orientation of the light input unit is adjustable in a direction parallel to a diffraction plane of the diffractive WDM device so as to select an actual channel spacing at the multi-channel, light handling device that is approximately equal to the selected channel spacing.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: January 11, 2005
    Assignee: Ibsen Photonics A/S
    Inventors: Jens Bastue, Bjarke Rose, Chaker Khalfaoui, Keld Theodor
  • Alignment of multi-channel diffractive WDM device
    Publication number: 20030030793
    Abstract: A method and apparatus are presented for aligning a diffractive WDM device that includes i) a multi-channel, light handling device having a selected channel spacing and ii) a multi-channel signal input unit. The method includes adjusting a direction of incidence of an optical signal from the input unit on at least a first diffracting element of the WDM device so as to set an actual optical channel spacing at an output region of the WDM device to be approximately equal to the selected channel spacing of the multi-channel, light handling device. In the apparatus, the orientation of the light input unit is adjustable in a direction parallel to a diffraction plane of the diffractive WDM device so as to select an actual channel spacing at the multi-channel, light handling device that is approximately equal to the selected channel spacing.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 13, 2003
    Applicant: ADC Denmark ApS
    Inventors: Jens Bastue, Bjarke Rose, Chaker Khalfaoui, Keld Theodor