Investigation of the photosensitivity, temperature sustainability and fluorescence characteristics of several Er-doped photosensitive fibersReport as inadecuate




Investigation of the photosensitivity, temperature sustainability and fluorescence characteristics of several Er-doped photosensitive fibers - Download this document for free, or read online. Document in PDF available to download.

* Corresponding author 1 School of Engineering and Mathematical Sciences 2 Department of Physics 3 OTRL - Optical Technology Research Laboratory 4 Department of Mechanical Engineering 5 LPMC - Laboratoire de physique de la matière condensée

Abstract : Three different types of Er doped photosensitive fibers, germanium-erbium Ge-Er fiber, tin-germanium-erbium fiber Sn-Er and antimony-germanium-erbium fiber Sb-Er have been manufactured and studied for use in optical sensor systems. Their characteristics of photosensitivity, the temperature sustainability of fiber Bragg gratings FBGs written into these fibers and the fluorescence emission from the Er dopant were investigated and compared. It has been shown in this work that these fibers all show a satisfactory degree of photosensitivity to enable the fabrication of FBGs and a significant level of fluorescence emission within the 1550 nm band for sensor use. The high temperature sustainability of the FBGs written into these fibers was investigated and seen to be quite significant at temperatures as high as 850 °C, in particular for the Sn-Er and Sb-Er fibers. A fiber laser using the Sb-Er fiber as the gain medium was demonstrated, giving evidence of the strong fluorescence emission from the Er dopant. These fibers are all suitable for use in a variety of sensing applications for the simultaneous measurement of temperature and strain by means of monitoring both the fluorescence characteristics and the peak wavelength shift of the FBGs formed in fiber laser sensor application.

Keywords : Photosensitive fiber Fiber Bragg grating Fluorescence





Author: Y.H. Shen - S. Pal - J. Mandal - T. Sun - K.T.V. Grattan - S.A. Wade - Stephen F. Collins - Gregory Baxter - Bernard Dussardier -

Source: https://hal.archives-ouvertes.fr/



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