Optical filter device for temperature dependence control
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United States of America Patent
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Jun 28, 2005
Grant Date -
Sep 18, 2003
app pub date -
Mar 11, 2002
filing date -
Mar 23, 2001
priority date (Note) -
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Abstract
The invention provides an optical filter device which is particularly suitable for compensating the gain produced by an erbium doped fiber amplifier due to temperature variations. The device has a tapered fiber filter mounted on a rigid substrate, such as aluminium, in such a manner that the tapered portion of the filter does not come in contact with the substrate. The fiber of the filter is preferably made of silica.
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