In a recent publication in Sensors [ http://www.mdpi.com/1424-8220/8/10/6448 ] Canning et al. at iPL report temperature cycling to 1295C of regenerated gratings in standard photosensitive fibre. These gratings are seeded by initial Type I grating formation and through an appropriate thermal processing routine, new gratings are engineered that are so stable they seem to exceed the fibre host in withstanding ultra high temperatures, indicating a significant structural change within the glass. The relative glass transition appears smooth as the background loss remains low.

These gratings extend the performance of silica to new regimes. They offer a lower cost alternative to sapphire-based sensors as a new sensors capability for applications involving ultra-high temperatures, such as those found in the smeltering industry and the like. For more information see the publication and visit our website: www.iplaustralia.com.