Characteristics of potential fibre Bragg grating sensor-based devices at elevated temperatures
2003 (English)In: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 14, no 7, 1131-1136 p.Article in journal (Refereed) Published
Fibre Bragg gratings (FBGs) of type I and IIA were fabricated in Ge-doped and B-Ge co-doped fibres using a 248 nm excimer laser and their performance characteristics were tested and compared with those of a chemical composition grating (CCG), written in a fluorine-germanium doped fibre, over a wide range of temperatures. Long-term testing (more than 600 h) involving a series of step-wise incremental temperature changes shows for the first time the potential of FBGs for high temperature measurement applications (up to and beyond 1100 degreesC), this depending on the type of FBG involved and the material and composition of the substrate fibre (the CCG was observed to be the most durable at very high temperatures). These gratings are likely to be useful for the simultaneous measurement of strain and temperature over these higher temperature ranges.
Place, publisher, year, edition, pages
2003. Vol. 14, no 7, 1131-1136 p.
fibre Bragg gratings (FBGs), chemical composition grating (CCG), photosensitive fibre, type I and IIA gratings, excimer laser, refractive index modulation, temperature sensitivity, chemical-composition gratings, optical fibers, written
IdentifiersURN: urn:nbn:se:kth:diva-22810ISI: 000185269000032OAI: oai:DiVA.org:kth-22810DiVA: diva2:341508
QC 201005252010-08-102010-08-10Bibliographically approved