Light Coupling Between the Whispering Gallery Modes of a Coated Microsphere and a Tapered Fiber

Davor Ristic (1) , Maurizio Mazzola (2) , Andrea Chiappini (2) , Patrice Feron (3) , Alphonse Rasoloniaina (3) , Gilles Cibiel (4) , Mile Ivanda (5) , Giancarlo C. Righini (6) , Maurizio Ferrari (2)

1 IFN - CNR Institute for Photonics and Nanotechnologies
2 CSMFO - Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica
3 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
4 CNES - Centre National d'Études Spatiales [Toulouse]
5 Rudjer Boskovic Institute [Zagreb]
6 IFAC - Istituto di Fisica Applicata "Nello Carrara"

Spherical microresonators were coated using a 70SiO2 - 30HfO2 glass doped with 0.3 mol% Er3+. The sphere was characterized by coupling a 1480 nm pump laser inside the sphere using a tapered optical fiber and observing the 1530-1580 nm Er3+ emission outcoupled with the same tapered fiber. The measurements were done for different coating thicknesses and compared with theoretical calculations to understand the relationship of the detected signal with the whispering gallery mode electric field profiles.

Mots clés: Whispering Gallery Mode; Tapered fiber

Domaines: Optique [physics.optics]

Davor Ristic, Maurizio Mazzola, Andrea Chiappini, Patrice Feron, Alphonse Rasoloniaina, et al.. Light Coupling Between the Whispering Gallery Modes of a Coated Microsphere and a Tapered Fiber. 36th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO 2013), May 2013, Opatija, Croatia. pp.34-37. ⟨hal-00997766⟩