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PHOTONIC DEVICES HAVING DEGENERATE OR SPLIT SPECTRAL BAND EDGES AND METHODS FOR USING THE SAME
PHOTONIC DEVICES HAVING DEGENERATE OR SPLIT SPECTRAL BAND EDGES AND METHODS FOR USING THE SAME
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机译:具有退化的或分裂的谱带边缘的光子设备及其使用方法
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摘要
Provided herein are photonic devices configured to display photonic band gap structure with a degenerate or a split band edge. Electromagnetic radiation incident upon these photonic devices can be converted into a frozen mode characterized by a significantly increased amplitude, as compared to that of the incident wave. The device can also be configured as a resonance cavity with a giant transmission band edge resonance. In an exemplary embodiment, the photonic device is a periodic layered structure with each unit cell comprising at least two anisotropic layers with misaligned anisotropy. The degenerate or split band edge at a given frequency can be achieved by proper choice of the layers' thicknesses and the misalignment angle. In another embodiment, the photonic device is configured as a waveguide periodically modulated along its axis.
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