Patents by Inventor Ibrahim Selwan

Ibrahim Selwan 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).

  • System and method to compensate for frequency distortions and polarization induced effects in optical systems
    Patent number: 9287680
    Abstract: The invention provides a system and a method for wavelength referencing and polarization mitigation. An optical wavelength tunable laser source is swept in a number of contiguous, overlapping sweep segments. A coarse reference wavelength section produces a reference signal that defines at least one absolute wavelength within a sweep segment. A fine wavelength reference section produces a periodic wavelength reference signal that defines a plurality of equidistant wavelengths within each sweep segment with an indeterminate offset relative to the absolute wavelength(s) of the coarse reference wavelength section. The free spectral range of the fine wavelength reference section is smaller than the spacing between subsequent absolute reference wavelengths of the coarse reference wavelength section. This arrangement allows reducing the minimum required overlap between contiguous sweep segments.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: March 15, 2016
    Assignee: FAZ TECHNOLOGY LIMITED
    Inventors: Ibrahim Selwan, John O'Dowd, Tom Farrell, Martin Farnan, Roger Maher
  • System and Method to Compensate for Frequency Distortions and Polarization Induced Effects in Optical Systems
    Publication number: 20150349485
    Abstract: The invention provides a system and a method for wavelength referencing and polarization mitigation. An optical wavelength tunable laser source is swept in a number of contiguous, overlapping sweep segments. A coarse reference wavelength section produces a reference signal that defines at least one absolute wavelength within a sweep segment. A fine wavelength reference section produces a periodic wavelength reference signal that defines a plurality of equidistant wavelengths within each sweep segment with an indeterminate offset relative to the absolute wavelength(s) of the coarse reference wavelength section. The free spectral range of the fine wavelength reference section is smaller than the spacing between subsequent absolute reference wavelengths of the coarse reference wavelength section. This arrangement allows reducing the minimum required overlap between contiguous sweep segments.
    Type: Application
    Filed: December 19, 2013
    Publication date: December 3, 2015
    Applicant: FAZ TECHNOLOGY LIMITED
    Inventors: Ibrahim Selwan, John O'Dowd, Tom Farrell, Martin Farnan