title: Nondegenerate mirrorless oscillation in silicon waveguide.
abstract: We propose nondegenerate four-wave mixing mirrorless oscillation in a multimode silicon nonlinear waveguide. Thanks to the large modal dispersion between two spatial modes caused by the high-index-contrast waveguide structure, two counterpropagating pumps of one spatial mode can generate two new optical waves of the other spatial mode at different frequencies. The phase-matching condition can be satisfied with the higher-order modes involved; therefore, frequencies of the newly generated light can be tuned by simply changing the pump frequency. The threshold power and conversion efficiency of the proposed mirrorless oscillation are investigated under different waveguide parameters.
authors: Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA. yanyan@usc.edu
authors: Yan
authors: Y
authors: Yan
authors: Lin
authors: L
authors: Zhangand
authors: Alan
authors: A
authors: Willner