Modal properties of an Erbium-doped asymmetric single-mode slab waveguide in the glass-ceramics SnO2-SiO2 system

Yann Boucher (1) , Lidia Zur (2) , Maurizio Ferrari (3)

1 FOTON - Institut des Fonctions Optiques pour les Technologies de l'informatiON
2 Enrico Fermi Center for Study and Research | Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi
3 CSMFO - Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica

We investigate the modal properties (effective index and modal gain) of an active, Erbium-doped single-mode slab waveguide made of silica tin-dioxide glass-ceramics on Silica. Completed with a photo-inscribed Bragg grating, such a structure is a good candidate for realizing an optically pumped laser emitter. For total Erbium concentration of 9.84 × 10−4 mol/cm3 and a cross-section (for stimulated transitions) of σ ≈ 2 × 10−25 m2 in a discussed structure, the maximum achievable material gain in DFB with Quarter-Wave phase Shift (QWS-DFB) is σ Ntot ≈ 23 m−1. Taking into account the confinement factor, the maximum achievable modal gain, in complex amplitude, over the length of 10 mm is at about (αmaxL) ≈ 0.09.

Mots clés: Thin films; SnO2-SiO2; Rare-earths; Glass-ceramics waveguides; Modal gain; DFB structure

Domaines: Optique / photonique

Yann Boucher, Lidia Zur, Maurizio Ferrari. Modal properties of an Erbium-doped asymmetric single-mode slab waveguide in the glass-ceramics SnO2-SiO2 system. Optical Materials, 2019, PRE’17 – Selected Papers from 7th International Workshop on Photoluminescence in Rare Earths: Photonic materials and devices, 87, pp.90-93. ⟨10.1016/j.optmat.2018.05.032⟩. ⟨hal-01950101⟩