Thulium environment in a silica doped optical fibre

Details Thulium environment in a silica doped optical fibre Thulium environment in a silica doped optical fibre

2008-08-28

arxiv.org/abs/0808.3949v1

Journal of Non-Crystalline Solids 354 (2007) 435-439

Physics

Optics

Scientific paper

10.1016/j.jnoncrysol.2007.06.083

Thulium-doped optical fibre amplifiers (TDFA) are developed to extend the optical telecommunication wavelength division multiplexing (WDM) bandwidth in the so-called S-band (1460-1530 nm). The radiative transition at 1.47 lm (3H4 -> 3F4) competes with a non-radiative multi-phonon de-excitation (3H4 -> 3H5). The quantum efficiency of the transition of interest is then highly affected by the phonon energy (Ep) of the material. For reliability reasons, oxide glasses are preferred but suffer from high phonon energy. In the case of silica glass, Ep is around 1100 cm-1 and quantum efficiency is as low as 2%. To improve it, phonon energy in the thulium environment must be lowered. For that reason, aluminium is added and we explore three different core compositions: pure silica, and silica slightly modified with germanium or phosphorus. The role of aluminium is studied through fluorescence decay curves, fitted according to the continuous function decay analysis. From this analysis, modification of the thulium local environment due to aluminium is evidenced.

Affiliated with

Also associated with

No associations

Rating

Thulium environment in a silica doped optical fibre does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thulium environment in a silica doped optical fibre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thulium environment in a silica doped optical fibre will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-327602