ABSTRACT
We present a simple and straightforward approach to investigate coupled spatial-soliton pairs of two copropagating mutually incoherent (i.e., both beams are fully spatially and temporally coherent, but are incoherent with respect to one another) light beams in saturable nonlinear media. The approach provides a deeper understanding of coupled spatial-soliton pairs and reveals many interesting features, including the entire existence curve of such solitons.
ABSTRACT
We show the possibility of developing an all-optical passive transistor in a simple and novel way. This could be done by copropagating two coaxial beams through a modified optical power filter. We show NOT logic and intensity modulation of the strong beam by the weak beam obtained with the analog.
ABSTRACT
We show the possibility of a new kind of passive nonlinear-optical device: an optical power filter made of graded-index single-mode fiber (SMF) and a nonlinear medium (NLM). It is shown that, only for a particular power, the mode in the SMF matches the mode in the NLM. The transmission coefficient from the NLM to the SMF is determined, and it is shown that a laser beam with a particular power can be filtered out.
