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Proceedings Paper

A fiber-optic interferometric X-ray dosimeter
Author(s): F. Barone
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Paper Abstract

We propose an optical fiber interferometric sensor for X-ray dosimetry. The temperature rise ΔT produced in a silica optical fiber irradiated with chopped monochromatic X-ray induces a phase shift in the propagation of a He-Ne laser beam with respect to the unirradiated arm of the interferometer. ΔT is proportional to the energy released in the fiber. A prototype Mach-Zehnder fiber interferometer has been realized and tested using a laser source to heat the measurement arm; a maximum phase sensitivity of the order of 10-3 radians has been achieved, corresponding to an energy of about 10-5 J absorbed in the irradiated fiber. A possible application is for synchrotron radiation dosimetry.

Paper Details

Date Published: 1 December 1991
Proc. SPIE 1584, Fiber Optic and Laser Sensors IX, (1 December 1991); doi: 10.1117/12.2321930
Show Author Affiliations
F. Barone, Univ. di Napoli Federico II (Italy)

Published in SPIE Proceedings Vol. 1584:
Fiber Optic and Laser Sensors IX
Ramon P. DePaula; Eric Udd, Editor(s)

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