Sensitivity Analysis and Optimization of Sub- wavelength Optical Gratings Using AdjointsShare
- Author(s): Niederberger, Armand C. R.; Fattal, David A.; Gauger, Nicolas R.; Fan, Shanhui; Beausoleil, Raymond G.
- HP Laboratories
- Keyword(s): simulation; optimization
Abstract: Numerical optimization of photonic devices is often limited by a large design space: the conventional finite-differences gradient method requires as many electric field computations as there are design parameters. Adjoint-based optimization can deliver the same gradients with only two electric field computations. Here, we derive the relevant adjoint formalism and illustrate its application for a waveguide slab, and for the design of optical sub- wavelength gratings.
- External Posting Date: February 21, 2014 [Fulltext]. Approved for External Publication
- Internal Posting Date: February 21, 2014 [Fulltext]