Modeling of the RIA in silica-based optical fibers: contribution of the photoionization of radiation-induced trapped states

Franck Mady (1) , Mourad Benabdesselam (1) , Angela Guttilla (1)

1 INPHYNI - Institut de Physique de Nice

The radiation-induced attenuation in silica optical fibers is usually attributed to the formation of color centers. The RIA spectrum is then considered a composition of several characteristic optical absorption bands. We argue, based on experimental and theoretical facts, that the photoionization of radiation-induced bandgap states may also contribute to the RIA. This contribution could notably play a role in the near-infra-red range where silica fibers are frequently operated but the origin of RIA poorly resolved.

Domaines: Optique / photonique

Franck Mady, Mourad Benabdesselam, Angela Guttilla. Modeling of the RIA in silica-based optical fibers: contribution of the photoionization of radiation-induced trapped states. 12th International Symposium SiO2, Advanced Dielectrics and Related Devices (SiO2 2018), Jun 2018, Bari, Italy. ⟨hal-02140922⟩