Resonator length measurement
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United States of America Patent
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Mar 13, 2012
Grant Date -
Jul 21, 2011
app pub date -
Oct 9, 2009
filing date -
Oct 10, 2008
priority date (Note) -
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Abstract
The invention provides a method and system for measuring the length of a reflective resonator, by analyzing an electromagnetic spectrum emitted therefrom. The emitted spectrum is used for estimating a first cavity length. This estimation is thereafter improved, by first computing at least one interference number for the spectrum, adjust this value to e.g. an integer or half-integer depending on the configuration of the resonator, and thereafter re-calculating the length of the resonator using the adjusted value of the interference number. The above is an efficient way of improving the accuracy in the determination of a physical property of a resonator.
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