Nonlinear Bent Directional Couplers with Asymmetrical Distribution of Nonlinearity,
Abstract
Recently, the nonlinear directional couplers have been extensively investigated as optical devices for ultra high-speed data processing. They were analyzed for parallel waveguides as well as for configuration with bending waveguides, which is more insensitive with respect to fabrication tolerances of the device length. In most of previously analyzed nonlinear directional couplers there was assumed the symmetrical distribution of nonlinearity. However, it has been shown that for asymmetrically placed nonlinear material the required switching power is lower than for symmetrical case. In this paper the influence of asymmetry of nonlinear refractive index distribution for transmission characteristics of nonlinear bent directional coupler is analyzed. The coupled mode theory is used and numerical results show that the critical power is strongly dependent on asymmetry of nonlinearity distribution.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 22, 1992
- Accession Number
- ADP007609
Entities
People
- Miroslaw A. Karpierz