Polymer-based materials for amplification in the telecommunication window: influence of erbium complex concentration on relevant parameters for the elaboration of waveguide amplifiers around 1550 nm,
Anh Quoc Le Quang, Eric Besson, Rolland Hierle, Ahmad Mehdi, Catherine Reyé, Robert Corriu, Isabelle Ledoux-Rak,Optical Materials 29, 941–948 (2007).