Abstract
A technique is discussed and demonstrated whereby the sensitivity of an imbalanced fiber-optic interferometric sensor is changed by as much as 70 dB by modifying the power spectrum and thus the coherence function of the input optical source. This phenomenon is then extended and used to monitor selectively single sensors in a small fiber-optic ladder array by synthesizing coherence functions that result in a high sensitivity for the sensor to be observed but a low sensitivity for all the others. Limitations of the demonstrated implementation are discussed and possible future designs presented.
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