Optical filters

Details Optical filters Optical filters

G - Physics

02

B

G02B 5/26 (2006.01) G02B 5/28 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2413650

A multi cavity comb filter for interleaving or de-interleaving WDM signals has a plurality of stacked optical cavities each having substantially the same thickness. The multiple cavity arrangement provides a comb reflection response and a comb transmission response with broad peaks, so that the filter can be used for transmitting one group of channels and reflecting another group of channels at interleaved positions. The cavities are preferably formed from silicon wafers, so that existing techniques can be employed to obtain specific cavity thicknesses with sufficient accuracy and uniformity.

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