TY - JOUR
T1 - Theory of fiber-optic, evanescent-wave spectroscopy and sensors
AU - Messica, A.
AU - Greenstein, A.
AU - Katzir, A.
PY - 1996/5/1
Y1 - 1996/5/1
N2 - A general theory for fiber-optic, evanescent-wave spectroscopy and sensors is presented for straight, uncladded, step-index, multimode fibers. A three-dimensional model is formulated within the framework of geometric optics. The model includes various launching conditions, input and output end-face Fresnel transmission losses, multiple Fresnel reflections, bulk absorption, and evanescent-wave absorption. An evanescent-wave sensor response is analyzed as a function of externally controlled parameters such as coupling angle, f number, fiber length, and diameter. Conclusions are drawn for several experimental apparatuses.
AB - A general theory for fiber-optic, evanescent-wave spectroscopy and sensors is presented for straight, uncladded, step-index, multimode fibers. A three-dimensional model is formulated within the framework of geometric optics. The model includes various launching conditions, input and output end-face Fresnel transmission losses, multiple Fresnel reflections, bulk absorption, and evanescent-wave absorption. An evanescent-wave sensor response is analyzed as a function of externally controlled parameters such as coupling angle, f number, fiber length, and diameter. Conclusions are drawn for several experimental apparatuses.
UR - http://www.scopus.com/inward/record.url?scp=0030151928&partnerID=8YFLogxK
U2 - 10.1364/AO.35.002274
DO - 10.1364/AO.35.002274
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C2 - 21085364
AN - SCOPUS:0030151928
SN - 1559-128X
VL - 35
SP - 2274
EP - 2284
JO - Applied Optics
JF - Applied Optics
IS - 13
ER -