We have introduced a novel technique to reduce the influence of internal backreflections on the sensitivity of interferometric fiber sensors based on frequency modulation of the source. The technique was experimentally tested and showed a reduction of 30 dB of the residual signal in the case of a single backreflection. It also appears that multiple backreflections can be dealt with by a multiplicity of modulation frequencies.
Reduction of residual signals in interferometric fiber sensors
2002-01-01
316470 byte
Conference paper
Electronic Resource
English
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