We have developed a powerful parallel genetic algorithm design tool for photonic crystal and waveguide structures. The tool employs a small-population-size genetic algorithm (microgenetic algorithm) for global optimization and a two-dimensional finite-difference time-domain method to rigorously design and optimize the performance of photonic devices. We discuss the implementation and performance of this design tool. We demonstrate its application to two photonic devices, a defect taper coupler to connect conventional waveguides and photonic crystal waveguides, and a sharp 90° waveguide bend for low index contrast waveguides.
© 2003 Optical Society of America
(230.3120) Optical devices : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices
(230.7370) Optical devices : Waveguides
(250.5300) Optoelectronics : Photonic integrated circuits
Jianhua Jiang, Jingbo Cai, Gregory P. Nordin, and Lixia Li, "Parallel microgenetic algorithm design for photonic crystal and waveguide structures," Opt. Lett. 28, 2381-2383 (2003)