Low cost step tunable light source
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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app pub date -
Jul 23, 2001
filing date -
Dec 15, 2000
priority date (Note) -
Abandoned
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Abstract
The invention is a tunable light source. Techniques for multiplexing various wavelengths into one fiber are provided. A thin film deposition optical monitoring system is provided that utilizes a multiplexer according to the present invention. Light from a multiplexed light source is passed through a fiber optic and emerges from the fiber tip. The light beam is collimated and passes through the substrate where a lens then focuses the transmitted light into a photo-detector. After signal processing, information is sent to the deposition flux source controller to control the deposition rate, coating material and whether deposition should be terminated. An advantage of the present invention over tunable lasers is realized in the low cost of the present invention.
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