Photonic Devices Having Degenerate Or Split Spectral Band Edges And Methods For Using The Same
First Claim
1. A photonic device, comprising:
- a periodic structure having an electromagnetic dispersion relation that exhibits a frequency gap with a split band edge for an input electromagnetic wave propagating in a first direction, wherein the structure is periodic in the first direction.
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Abstract
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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Citations
30 Claims
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1. A photonic device, comprising:
a periodic structure having an electromagnetic dispersion relation that exhibits a frequency gap with a split band edge for an input electromagnetic wave propagating in a first direction, wherein the structure is periodic in the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A photonic system, comprising:
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a photonic device configured to display a split band edge, the photonic device comprising a first end, a second end, a first surface located on the first end and a plurality of segments coupled together between the first and second ends, each segment comprising; a first anisotropic layer; a second anisotropic layer misaligned with the first anisotropic layer; and a third layer, wherein the photonic device is configured to convert an electromagnetic wave incident on the first surface into a frozen mode when the electromagnetic wave operates at a frequency in proximity with the split band edge. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A photonic system, comprising:
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a photonic device configured to display a split band edge, the photonic device comprising a first end, a second end, a first surface located on the first end and a plurality of periodic segments coupled together between the first and second ends, each segment comprising; a first anisotropic layer having a first thickness; and a second anisotropic layer misaligned with the first anisotropic layer and having a second thickness different from the first thickness; wherein the photonic device is configured to convert an electromagnetic wave incident on the first surface into a frozen mode when the electromagnetic wave operates at a frequency in proximity with the split band edge. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification