A fiber-optic interferometric X-ray dosimeter

F. Barone

doi:10.1117/12.2321930

1 December 1991 A fiber-optic interferometric X-ray dosimeter

F. Barone

Proceedings Volume 1584, Fiber Optic and Laser Sensors IX; (1991) https://doi.org/10.1117/12.2321930
Event: OE Fiber, 1991, Boston, MA, United States

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.

Citation Download Citation

F. Barone "A fiber-optic interferometric X-ray dosimeter", Proc. SPIE 1584, Fiber Optic and Laser Sensors IX, (1 December 1991); https://doi.org/10.1117/12.2321930

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