PERFORMANCE ENHANCEMENT OF YTTERBIUM-DOPED FIBER AMPLIFIER EMPLOYING A DUAL-STAGE IN-BAND ASYMMETRICAL PUMPING
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United States of America
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Issued Date -
Mar 6, 2025
app pub date -
Nov 15, 2023
filing date -
Nov 15, 2023
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Abstract
A system for amplifying optical signals includes a first isolator configured to generate a first isolated signal, a first pump, a first coupler for generating a first pumped signal, a first ytterbium doped fiber for receiving the first pumped signal and converting the first pumped signal to a first amplified signal, a second isolator for converting the first amplified signal into a second isolated signal, a second pump, a second coupler for generating a second pumped signal, a second ytterbium doped fiber configured to receive the second pumped signal and convert the second pumped signal into a second amplified signal, and a third isolator configured to receive the second amplified signal and convert the second amplified signal into an amplified optical signal. The first pump and the second pump are configured as co-propagating in-band asymmetrical pump sources for the first and second photons.
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