Multi-stage long-band optical amplifier with ASE re-use

Details Multi-stage long-band optical amplifier with ASE re-use Multi-stage long-band optical amplifier with ASE re-use

2011-01-25

2011-01-25

Bolda, Eric (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

C359S333000, C359S341320

Reexamination Certificate

active

07876497

ABSTRACT:
There is provided a long-band rare-earth-doped optical amplifier and method for amplifying an optical signal. The optical amplifier has a pre-, a mid- and a post-amplification stage. Only the mid-amplification stage is pumped with a pump light source. The other two are pumped using Amplified Spontaneous Emission (ASE) generated in the mid-amplification stage. An optical coupling device is used to couple the three amplification stages together and to split the ASE generated in the mid-amplification stage and available at one end of the mid-amplification stage. One part of the split ASE is used to pump the pre-amplification stage while the other part is used to pump the post-amplification stage.

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