Resources Contact Us Home
Distributed optical structures with improved diffraction efficiency and/or improved optical coupling

Image Number 6 for United States Patent #7194164.

An optical apparatus comprises a planar optical waveguide having at least one set of diffractive elements and confining in at least one transverse spatial dimension optical signals propagating therein. Each diffractive element set routes, between corresponding input and output optical ports, a corresponding diffracted portion of an input optical signal propagating in the waveguide that is successively incident on the diffractive elements and is diffracted by the diffractive element set. The optical signals propagate in the waveguide in corresponding diffractive-region optical transverse modes in regions where the diffractive elements are present, and in corresponding non-diffractive-region optical transverse modes in regions where the diffractive elements are absent. The diffractive element set is adapted so as to yield an operationally acceptable level of either or both of i) optical coupling between corresponding diffractive-region and non-diffractive-region optical transverse modes, and ii) diffraction efficiency of the diffractive element set.

  Recently Added Patents
Shoe upper
Radio communication system, base station device and mobile station device utilizing an intermittent reception
Method and system for simulating superimposition of a non-linearly stretchable object upon a base object using representative images
Configurable pitch reducing optical fiber array
Light-emitting device package structure
Vehicle motion control device
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
  Randomly Featured Patents
Ring-expansion of cyclic olefins metathesis reactions with an acyclic diene
Theanine derivative, preparation method thereof, and use thereof for alleviating acne
System, method and program product for local client device context-aware shared resource and service management
Substituted 2-(3-alkenyl-benzoyl)-cyclohexane-1,3-diones
Syringe barrel with roughened surface
Method of reducing failure of pressurized container valves
Process for starting up a Fischer-Tropsch reactor
Cloned glucagon-like peptide-2 receptors
Integrated nanostructure-based non-volatile memory fabrication