We observed disorder induced focusing nonlinearity activated by a monochromatic light beam in optical fibers composed by two kinds of plastics. The two materials, arranged in disordered fashion, support modes with a degree of localization which increases with the intensity of the optical beam. The temporal response of the optical fiber demonstrates the thermal origin of this nonlinearity. Measurements of the localization length as a function of the input power with broadband and monochromatic inputs show the effectiveness of focusing action with respect to the case of homogeneous fibers.
Experimental observation of disorder induced self-focusing in optical fibers / Marco, Leonetti; Salman, Karbasi; Arash, Mafi; Conti, Claudio. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 105:17(2014), p. 171102. [10.1063/1.4900781]
Experimental observation of disorder induced self-focusing in optical fibers
CONTI, CLAUDIO
2014
Abstract
We observed disorder induced focusing nonlinearity activated by a monochromatic light beam in optical fibers composed by two kinds of plastics. The two materials, arranged in disordered fashion, support modes with a degree of localization which increases with the intensity of the optical beam. The temporal response of the optical fiber demonstrates the thermal origin of this nonlinearity. Measurements of the localization length as a function of the input power with broadband and monochromatic inputs show the effectiveness of focusing action with respect to the case of homogeneous fibers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
