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.