Abstract
We present an analytical approach to accurately model the phase sensitivity,
and provide simple analytical formulae, useful in the design, comparison and
optimization of multiplexed amplified interferometric fiber-optic based sensor
systems. The phase sensitivity model incorporates the various key noise contributions
including receiver noise, amplified spontaneous emission (ASE) induced noise,
active sources noise and other phase noise terms. We define and present a
novel term ‘Demod phase sensitivity’ to take into account the
effects from noise aliasing in systems based on time division multiplexed
(TDM) architectures. An experiment was conducted that confirmed the appropriateness
and accuracy of the phase sensitivity model. The approach is widely applicable
but particular appropriate for fiber-optic sensor systems using amplifiers
and TDM.
© 2013 IEEE
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