Patents Assigned to GC Photonics, Inc.
  • Variable optical filter
    Patent number: 11733582
    Abstract: A tunable optical filter includes sequentially coupled Mach-Zehnder (MZ) interferometers. The first and last interferometers are configured to function as variable power splitter/combiner, whereas the middle interferometer or interferometers have unequal optical paths, creating a desired spectral response of the entire filter. The amplitude of the spectral response can be varied by varying the optical power splitting/combining ratios.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: August 22, 2023
    Assignee: GC Photonics, Inc.
    Inventor: Lijie Qiao