Radiation hardening of Rare-Earth doped fiber amplifiers
- Authors: VIVONA, M; GIRARD, S; PINSARD, E; LAURENT, A; ROBIN, T; CADIER, B; BOUKENTER, A; OUERDANE, Y; CANNAS, M
- Publication year: 2012
- Type: eedings
- OA Link: http://hdl.handle.net/10447/75241
Abstract
We investigated the radiation hardening of optical fiber amplifiers operating in space environments. Through a real-time analysis in active configuration, we evaluated the role of Ce in the improvement of the amplifier performance against ionizing radiations. Ce-codoping is an efficient hardening solution, acting both in the limitation of defects in the host glass matrix of RE-doped optical fibers and in the stabilization of lasing properties of the Er3+-ions. On the one hand, in the nearinfrared region, radiation induced attenuation measurements show the absence of radiation induced P-related defect species in host glass matrix of the Ce-codoped active fibers; on the other hand, in the Ce-free fiber, the higher lifetime variation shows stronger local modifications around the Er3+-ions with the absence of Ce.