Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2007-10-09
2007-10-09
Sanghavi, Hemang (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S016000, C385S027000, C398S083000, C398S085000
Reexamination Certificate
active
11198721
ABSTRACT:
A tunable optical filter comprises an optical switch having a single first optical port and a plurality of second optical ports; a plurality of band pass filters, each one of the band pass filters optically coupled to a respective second optical port; and an optical multiplexer having a plurality of inputs and a single output, each input optically coupled to a respective band pass filter, wherein the optical switch delivers a plurality of optical channels to a selected one of the band pass filters, the selected band pass filter transmitting a single selected optical channel to an input of the optical multiplexer. Alternatively, the multiplexer may be substituted by a second optical switch. Optionally, the band pass filters may reflect other channels back to the plurality of second optical ports.
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Barbarossa Giovanni
Li Ming
Peng Song
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