We show that a nonlinear asymmetric directional coupler composed of a linear waveguide and a nonlinear waveguide operating by nondegenerate parametric amplification is an effective source of single-mode squeezed light. This is has been demonstrated, under certain conditions and for specific modes, for incident coherent beams in terms of the quasiprobability functions, photon-number distribution and phase distribution.
@article{arxiv.1107.5398,
title = {Generation of squeezed light in a nonlinear asymmetric directional coupler},
author = {Faisal A. A. El-Orany and J. Perina and M. Sebawe Abdalla},
journal= {arXiv preprint arXiv:1107.5398},
year = {2015}
}