Dual wavelength optoelectronic system for intensity modulated fiberoptic sensors

A signal-processintegc hniquef or intensity-modulatefdib re-optical
sensorsis presentedS. ucha techniquew, hich can be adoptedi n most dualwavelengthre
ferencings ensorsa, llowso ne to extractb oth the intensity-modulateds
ignala nd the references ignalf rom the compositep hotodetectosr ignal,
using a .Forrrier expansion. A high sensitivity und a goòd noise rejectión is
achievedE. xperimentarle sults,o btainedw it-ha therÀochromicte mperature
sensora, re reported.