Based on inspiration from an inverse optimization strategy and theoretical finite-difference time-domain method simulations, an ultralow loss power coupler between two different photonic crystal waveguides was designed, fabricated and characterized. The experimental results showed that the loss was less than 1 dB for transverse electric polarized light at a wavelength of 1550 nm, which is consistent with expectations from numerical modeling. High efficiency optical couplers are critical for development of integrated optical circuit functionality.

Topics
Silicon-on-insulator, Evolutionary computation, Crystal lattices, Polymers, Scanning electron microscopy, Numerical methods, Finite difference methods, Integrated optics, Photonic crystal waveguides, Photonic integrated circuits
© 2011 American Institute of Physics.
2011
American Institute of Physics
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