Pressure sensitivity of side-hole optical fiber sensors

The dependency of the pressure-induced birefringence of a side-hole fiber on its geometry has been numerically investigated using the finite element method. We demonstrate that the pressure sensitivity of such a fiber shows a linear dependence on /spl phi//sup 2/, where /spl phi/ is the angle betwee...

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Veröffentlicht in:	IEEE photonics technology letters 1998-06, Vol.10 (6), p.857-859
Hauptverfasser:	Clowes, J.R., Syngellakis, S., Zervas, M.N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustic sensors Birefringence Finite element methods Geometrical optics Geometry Optical fiber polarization Optical fiber sensors Optical fiber testing Optical fiber theory Pressure measurement
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Beschreibung
Zusammenfassung:	The dependency of the pressure-induced birefringence of a side-hole fiber on its geometry has been numerically investigated using the finite element method. We demonstrate that the pressure sensitivity of such a fiber shows a linear dependence on /spl phi//sup 2/, where /spl phi/ is the angle between the side hole center and core center axis and the core center to side-hole tangent. Experimental data obtained with two different side-hole fiber sensors are shown to agree extremely well (to within 10%) with theoretical predictions.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/68.681509