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AssigneeThe United States of America as represented by the Secretary of the Navy
InventorScott L. Patton
Estimating the term…
A method and apparatus for photobleaching predetermined patterns in an opal waveguide. The apparatus irradiates the optical waveguide generally held in a fixture. The irradiation includes a selected region or regions of the optical waveguide or the entire optical waveguide. The radiation interacts with radiation sensitive constituents in the optical waveguide to induce a light transmission loss. After the irradiation is completed, the optical waveguide is allowed to age whereby the light transmission recovers to an equilibrium less value. Light beams photobleach predetermined patterns into the previously irradiated region or regions. The patterns may take the form of Bragg gratings in the waveguide.
A method for establishing a predetermined pattern in an optical waveguide having a given light transmissivity partially dependent upon the presence of a radiation sensitive constituent in the optical waveguide and having an indeterminate length, said method comprising the steps of:
Apparatus for establishing a predetermined pattern grating in an optical waveguide having a given light transmissivity partially dependent upon the presence of a radiation sensitive constituent in the optical waveguide and having an indeterminate length, said apparatus comprising:
Dependencies are inferred from the claim text.