Abstract
In this paper, we report the experimental demonstration of an amplified
optical fiber double-ring network for the multiplexing of sensors. The network
is designed to be inherently resilient to fiber failures because it enables
simultaneous interrogation of all the optical fiber sensors using both rings.
We demonstrate the feasibility of so-called “dedicated protection”
for fiber optic intensity sensors. Raman amplification is used to overcome
the losses of the couplers used in the rings, providing power transparency.
In this novel configuration, Raman pumping is activated only when a fiber
failure occurs. We demonstrate how the topology allows the received powers
from the sensors to be equalized.
© 2009 IEEE
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