Intracavity coupled-active-resonator-induced dispersion

Yannick Dumeige (1) , Stephane Trebaol (1) , Patrice Feron (1)

1 FOTON - Fonctions Optiques pour les Technologies de l'informatiON

We have proposed and experimentally demonstrated tunable cavity-linewidth narrowing by means of coupled-active-resonator-induced dispersion. We have theoretically studied the coupling-resonator-induced-dispersion phenomenon in the general case of N coupled resonators and especially the case of two or three resonators. In the case of two resonators we have experimentally shown that the strong dispersion induced by the coupling of resonators can lead to cavity ringdown effect enhancement. In the case of three resonators, we propose a coupling scheme allowing the quality (Q) factor of a critically coupled resonator to be increased and actively modulated by using two additional coupled resonators. We have experimentally tested the feasibility of the proposition by using a model system consisting of Er3+-doped fiber coupled resonators. These experimental results demonstrate the possibility of Q-factor tailoring by the use of active artificial photonic media.

Keywords: Laser resonators cavities amplifiers arrays and rings; Other fiber-optical devices; Optical interference

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Yannick Dumeige, Stephane Trebaol, Patrice Feron. Intracavity coupled-active-resonator-induced dispersion. Physical Review A : Atomic, molecular, and optical physics, 2009, 79 (1), pp.013832. ⟨10.1103/PhysRevA.79.013832⟩. ⟨hal-00474697⟩