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US 12,573,802 B2Granted
Full-band, high-power optical amplifier
AssigneeLumentum Operations LLC
InventorAli Salehiomran
Life of this patent
Estimating the term…
Abstract
In some implementations, an optical amplifier system includes a variable gain optical amplifier that is an erbium doped fiber amplifier. The variable gain optical amplifier may provide a first gain stage for an optical signal. The optical amplifier system may include a fixed gain optical amplifier that is an erbium-ytterbium doped fiber amplifier. The fixed gain optical amplifier may provide a second gain stage for the optical signal following the first gain stage.
Claims20
An optical amplifier system, comprising:
- a variable gain optical amplifier that is an erbium doped fiber amplifier (EDFA);
- a gain flattening filter at an output of the variable gain optical amplifier;
- and
- a fixed gain optical amplifier that is an erbium-ytterbium doped fiber amplifier (EYDFA),
- wherein the fixed gain optical amplifier is at an output of the gain flattening filter, and
- wherein an optical gain provided by the fixed gain optical amplifier being less than an optical gain provided by the variable gain optical amplifier reduces gain ripple of the optical amplifier system.
3 more elements
An optical amplifier system, comprising:
- a variable gain optical amplifier that is an erbium doped fiber amplifier (EDFA), the variable gain optical amplifier to provide a first gain stage for an optical signal;
- and
- a fixed gain optical amplifier that is an erbium-ytterbium doped fiber amplifier (EYDFA), the fixed gain optical amplifier to provide a second gain stage for the optical signal following the first gain stage,
- wherein an optical gain of the fixed gain optical amplifier being less than an optical gain of the variable gain optical amplifier reduces gain ripple of the optical amplifier system.
1 more element
A method, comprising:
- obtaining, by an optical amplifier system, an optical signal;
- amplifying, by the optical amplifier system in a first gain stage, the optical signal using a variable gain optical amplifier that is an erbium doped fiber amplifier (EDFA);
- and
- amplifying, by the optical amplifier system in a second gain stage, the optical signal using a fixed gain optical amplifier that is an erbium-ytterbium doped fiber amplifier (EYDFA),
- wherein an optical gain of the fixed gain optical amplifier being less than an optical gain of the variable gain optical amplifier reduces gain ripple of the optical amplifier system.
2 more elements
Dependencies are inferred from the claim text.