Double-pass fiber amplifier

Details Double-pass fiber amplifier Double-pass fiber amplifier

2007-10-30

2007-10-30

Hughes, Deandra M (Department: 3663)

Optical: systems and elements

Optical amplifier

Multiple pass

Reexamination Certificate

active

11497825

ABSTRACT:
Several examples of double-pass fiber amplifiers including a polarization maintaining (PM) gain-fiber are disclosed. In each example, input and twice-amplified output are separated by an all-fiber, polarization-maintaining polarization splitter combiner. The examples include double-pass fiber amplifiers not including any bulk components and double pass fiber amplifiers including a bulk component or a Faraday rotating mirror located in a position in the amplifier wherein the component is exposed only to radiation amplified on the first pass through the gain-fiber.

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