Optical filter device for temperature dependence control

G - Physics – 02 – B

Patent

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G02B 5/20 (2006.01) G02B 6/34 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2342098

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 aluminum, 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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