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Proceedings Paper

Optical fibers for the application of a fiber radiation sensor
Author(s): Ping Lu; Xiaoyi Bao; Narayan Kulkarni; Kellie Brown
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Paper Abstract

We have measured radiation ((gamma) ray) induced loss of P- doped and Ge-doped fibers with different dopant concentrations and core diameters for different dose rates. The following conclusions can be obtained from our experiment: (1) The fibers we tested (P and Ge doped) have no evident recovery after (gamma) ray radiation. (2) No evident photo-bleaching effect had been observed by irradiating the fiber with diode laser of wavelength 630 micrometer. (3) Optical fiber with higher dopant concentration does not mean more sensitive. (4) For fiber length as short as 0.3 m, the sensitivity of P-doped fiber (0.6 - 0.8 dB/m for total dose of 4 Gy) is sufficient for the measurement of dose range for patients.

Paper Details

Date Published: 10 February 1999
PDF: 9 pages
Proc. SPIE 3534, Environmental Monitoring and Remediation Technologies, (10 February 1999); doi: 10.1117/12.339033
Show Author Affiliations
Ping Lu, Univ. of New Brunswick (Canada)
Xiaoyi Bao, Univ. of New Brunswick (Canada)
Narayan Kulkarni, Saint John Regional Hospital (Canada)
Kellie Brown, Univ. of New Brunswick (Canada)

Published in SPIE Proceedings Vol. 3534:
Environmental Monitoring and Remediation Technologies
Tuan Vo-Dinh; Robert L. Spellicy, Editor(s)

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