Tunable and switchable multiple-cavity thin film optical filters
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United States of America Patent
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Issued Date -
Nov 25, 2004
app pub date -
Mar 19, 2004
filing date -
Mar 21, 2003
priority date (Note) -
Abandoned
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Abstract
A switchable optical filter including a first thin-film optical bandpass filter portion; and a second thin-film optical bandpass filter portion, wherein both the first and second thin-film optical bandpass filter portions are adjacent to each other and form parts of single integral structure, and wherein the first thin-film optical bandpass filter is thermally tunable and is characterized by a passband that shifts as a function of temperature and wherein the second thin-film optical bandpass filter is thermally non-tunable.
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