6533b839fe1ef96bd12a6df2
RESEARCH PRODUCT
<title>Fiber optical intensity-ratio refractometer with digital display</title>
Juris LazdinsJanis SpigulisGeorge Barenssubject
EngineeringOptical fiberbusiness.industryOptical cross-connectOptical engineeringlaw.inventionDisplay deviceOpticsRefractometerlawFiber optic sensorFiber optic splitterbusinessOptical attenuatordescription
Simplicity, cost efficiency, and higher fidelity compared to the single-channel design are the main advantages stimulating the recent interest on fiber optic intensity-ratio sensors. Optical and electronic designs of refractometric sensors of this kind are discussed here. Two optical schemes of retroreflective probes with one input and two output fibers are proposed. The probe sensitivity to liquid refractivity changes in the interval 1.33 < n < 1.41 is studied by computer simulation. An originally developed one-ADC-based signal processing circuit providing digital display of the intensity-ratio determined n-values is described as well.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-03-10 | SPIE Proceedings |