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Method For Producing Conductive Or Insulating Feedthroughs In A Substrate, Janet K. Lumpp, Susan D. Allen
Method For Producing Conductive Or Insulating Feedthroughs In A Substrate, Janet K. Lumpp, Susan D. Allen
Susan D. Allen
A method for producing feedthroughs in a substrate having a front and back surface, wherein the substrate either has a hole or absorbs radiation at a given wavelength. The method includes selecting and intimately bonding a sheet to the back surface of the substrate with an adhesive which is absorptive at the given wavelength. If the substrate has a hole, an exposed area of the sheet is illuminated with laser radiation at the given wavelength and at a power level sufficient to ablate a portion of the sheet behind the exposed area, thereby creating the feedthrough in the substrate. If …
Apparatus And Method Of Fabricating Directional Fiber Optic Taps, Sensors And Other Devices With Variable Angle Output, Susan D. Allen, Changhun Lee
Apparatus And Method Of Fabricating Directional Fiber Optic Taps, Sensors And Other Devices With Variable Angle Output, Susan D. Allen, Changhun Lee
Susan D. Allen
An apparatus and method for fabricating directional fiber optic taps having a variety of output angles. The taps can be used to monitor losses due to misalignment of the fiber or losses due to bending and straining of the fiber. The apparatus and method can also be used to fabricate taps which filter out higher order modes in a fiber. The apparatus and method can also be used to produce taps which can be used in a position or refractive index measuring system.