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Chemical composition fiber gratings in a high mixed gamma neutron radiation field
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2006 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 53, no 3, 1607-1613 p.Article in journal (Refereed) Published
Abstract [en]

Fiber Bragg gratings are all-fiber wavelength-selective refractive index structures manufactured through UV exposure of optical fibers. Their applications range from WDM all-fiber filters, dispersion compensators and fiber laser resonators for optical telecommunication applications to different types of point or distributed optical fiber sensors for a large variety of applications. The nuclear industry is considering the use of photonic technology for data communication in the next generation of nuclear power plants. In addition, fiber Bragg grating sensors are being evaluated by the nuclear industry for structural integrity and temperature monitoring. This work aims to study, in harsh radiation environments, a new type of FBG referred to as chemical composition grating. These gratings differ from other types of FBG in that their refractive index structure is attributed to a change in the chemical composition. Chemical composition gratings have shown to be extremely temperature stable surviving temperatures in excess of 1000 degrees C. We have experimentally studied the effect of very harsh gammaneutron radiation on the properties of chemical composition gratings fabricated in a Ge-F doped silica optical fiber.

Place, publisher, year, edition, pages
2006. Vol. 53, no 3, 1607-1613 p.
Keyword [en]
gratings, ionizing radiation, nuclear reactor, optical fiber radiation effects, optical fiber sensing, optical-fibers, vitreous silica, nuclear-reactor, sensors, stability, hydrogen
URN: urn:nbn:se:kth:diva-15777DOI: 10.1109/tns.2005.863273ISI: 000238582300049OAI: diva2:333819
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Fokine, Michael
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