Spectral equalizer for multiplexed channels
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United States of America Patent
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Oct 31, 2000
Grant Date -
N/A
app pub date -
Jan 14, 1998
filing date -
Jan 14, 1998
priority date (Note) -
Expired
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Abstract
An optical element having a periodically varying spectral response is used to flatten the spectral amplitudes within each of a group of multiplexed channels having different predetermined central wavelengths with uneven spectral amplitudes peaked around the central wavelengths. Spectral equalization is achieved by having the amplitude valleys of the spectral response aligned individually with the different central wavelengths. The optical element comprises an optical cavity, which forms part of a low-finesse Fabry-Perot etalon.
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