FIBER OPTIC EVANESCENT FIELD ABSORPTION SENSOR - EFFECT OF LAUNCHING CONDITION AND THE GEOMETRY OF THE SENSING REGION

Authors
GUPTA BD SINGH CD SHARMA A
Citation
Bd. Gupta et al., FIBER OPTIC EVANESCENT FIELD ABSORPTION SENSOR - EFFECT OF LAUNCHING CONDITION AND THE GEOMETRY OF THE SENSING REGION, Optical engineering, 33(6), 1994, pp. 1864-1868
Citations number
11
Categorie Soggetti
Optics
Journal title
Optical engineering → ACNP
ISSN journal
00913286
Volume
33
Issue
6
Year of publication
1994
Pages
1864 - 1868
Database
ISI
SICI code
0091-3286(1994)33:6<1864:FOEFAS>2.0.ZU;2-O
Abstract
Fiber optic evanescent wave absorption sensors based on four different designs are described. The launching condition and the geometry of th e sensing region are found to be the main parameters that can influenc e the sensitivity of the sensor. High sensitivity is achieved by launc hing the selected rays into the fiber having tapered sensing regions. The experimental results obtained are qualitatively explained using a simple model based on meridional rays.