Wavelength monitor for use with more than one wavelength
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United States of America Patent
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Dec 16, 2008
Grant Date -
Nov 23, 2006
app pub date -
Jul 25, 2006
filing date -
Apr 5, 2000
priority date (Note) -
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Abstract
A wavelength locker for use at more than one wavelength includes filters with different characteristics for a corresponding detector. The filters may be etalons having different free spectral ranges, e.g., having different apparent or real thicknesses. If more than three such filters are used outputting offset periodic signals, a reference detector may be eliminated and continuous operation over a wavelength range may be realized.
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