Photonic Devices Having Degenerate Spectral Band Edges and Methods of 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 degenerate 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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Accused Products
Abstract
Provided herein are photonic devices configured to display photonic band gap structure with a degenerate 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 band edge at 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 degenerate 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 degenerate 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 degenerate 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 degenerate 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 degenerate band edge. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification