Abstract
A geometry projection method for the design of photonic nanostructures is demonstrated and compared with a topology optimization method. By using a higher-dimensional surface to delineate the material interfaces, the projection method restricts the regions of intermediate dielectric properties to a narrow user-defined band and gives some implicit control over feature size. Topology optimization addresses these issues by using a penalization to avoid areas of intermediate dielectric and a filter to obtain implicit control over feature size. The directional emission from a photonic crystal waveguide termination is improved by both methods by generating a series of irregularly shaped dielectric posts. Results are presented, and the relative merits of each method are discussed.
Original language | English (US) |
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Pages (from-to) | 77-79 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 32 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2007 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics