Abstract
We present a new scheme for a laser cooled Raman optical fiber amplifier.
The heat generated in the process of Raman amplification (RA) is compensated
for with laser cooling provided by anti-Stokes fluorescence of ytterbium
ions doped in the core of the fiber. The device is pumped with two pump
sources. One of the pump sources provides RA of the signal and does not
interact with the ytterbium ions in the core; a second pump cools the fiber
through anti-Stokes fluorescence of the Yb$^{3+}$ ions. The proper arrangement of Yb$^{3 +}$ distribution can provide athermal performance of the
device.
© 2009 IEEE
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