Patents Represented by Law Firm Harris and Burdick
  • Grating assisted acousto-optic tunable filter and method
    Patent number: 5946128
    Abstract: An acousto-optic tunable filter and filtering method are disclosed providing for a significantly increased number of available wavelength channels for output. The filter combines a diffraction grating, the grating vector of which is transverse to light propagation direction, with an acousto-optic beam deflector, which, by accommodating a narrow spectral bandwidth (about 5% that of conventional acousto-optic tunable filters), provides significantly increased output bandwidth and available wavelength channels (by a factor of approximately 20).
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: August 31, 1999
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventor: Eung Gi Paek