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AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorsDavid P. Kelly, Peter A. Ketteridge, Daniel J. Creeden, Benjamin R. Johnson
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A broadband spectral power generator in a multimode optical fiber utilizes a standard multimode fiber that is coiled. A plate is placed on the coiled fiber and a force is applied to compresses the coiled fiber and thereby increase the interactions between the compressed windings and induce modal mixing and birefringence in the fiber. In addition, the compression causes additional non-linear processes to be excited and occur in the compressed fiber coil to generate more broadband light. This allows for better “mixing” of the spatial beam in the multimode fiber coil and allows for the various modes to overlap. The multimode fiber coil is made of silica, silicate, germinate, phosphate, fluoride, chalcogenide, or telluride. The compressed coiled fiber may be driven by a laser providing more than one wavelength output and this greatly increases the amount of nonlinear mixing in the fiber for a greatly enhanced spectral coverage.
An optical fiber coil for creating a broadband spectral output when driven by a laser, the optical fiber coil for creating a broadband spectral output comprising;
An optical fiber coil for creating a broadband spectral output when driven by a laser, the optical fiber coil comprising:
A method for generating a broadband output from a coiled optical fiber that consists only of a high index of refraction core surrounded by only one outer layer or cladding that is a light transmitting material having a low index of refraction and the optical fiber is end pumped rather than cladding pumped, wherein the coiled fiber has an axis, and comprising the step of:
Dependencies are inferred from the claim text.