optical polarization

Modal attraction on low order modes by Kerr effect in a graded refractive index multimode fiber

Modal attraction towards low order modes in a GRIN multimode fiber was experimentally observed at high power and characterized, thus enriching the dynamics of the Kerr self-cleaning effect leading to quasi fundamental mode generation.

Nonlinear polarization dynamics of Kerr beam self-cleaning in a GRIN multimode optical fiber

We experimentally study the polarization dynamics of Kerr beam self-cleaning in a multimode fiber. We reveal that spatial beam cleanup is accompanied by nonlinear polarization evolution and a significant increase of the degree of polarization.