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US 5,633,743 AGranted
Optical communications system using tunable tandem Fabry-Perot etalon
AssigneeLucent Technologies Inc.
InventorJean-Marc P. Delavaux
Life of this patent
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Abstract
A tunable tandem Fabry-Perot etalon in used in optical systems as a filter between two amplifier stages. The etalon filters the signal going from the preamplifier to the amplifier and provides further filtering as the output of the amplifier also passes through the etalon.
Claims6
An optical device comprising:
- a preamplifier, said preamplifier having an input and an output;
- an amplifier, said amplifier having an input and an output;
- and
- a tunable Fabry-Perot etalon having two optical paths through said etalon, said etalon having first and second inputs and first and second outputs, said first and second inputs being connected to the outputs of said preamplifier and said amplifier, respectively;
- said first output being connected to said amplifier.
2 more elements
An optical system comprising
- a transmitter;
- a preamplifier, said preamplifier having an input and an output;
- an amplifier, said amplifier having an input and an output;
- a tunable Fabry-Perot etalon having two optical paths through said etalon, said etalon having first and second inputs and first and second outputs, said first and second inputs being connected to the outputs of said preamplifier and said amplifier, respectively;
- said first output being connected to said amplifier;
- a receiver;
- and
- optical fibers optically connecting said transmitter and preamplifier and said receiver and said amplifier.
5 more elements
Dependencies are inferred from the claim text.