Photonic crystal resonant cavity and photonic crystal optical fiber based on Dirac point

A technology of photonic crystal fiber and photonic crystal, which is applied in cladding fiber, optical waveguide light guide, optical waveguide coupling, etc., can solve the problem of leakage of localized modes, achieve the effect of expanding functions and suppressing light divergence

Inactive Publication Date: 2014-05-14
HEFEI UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

Unlike the one-dimensional localized mode, it is generally believed that the two-dimensional localized mode can only exist in a complete band gap, because as long as there is no suppression of the band gap in any direction, the energy of th

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  • Photonic crystal resonant cavity and photonic crystal optical fiber based on Dirac point
  • Photonic crystal resonant cavity and photonic crystal optical fiber based on Dirac point
  • Photonic crystal resonant cavity and photonic crystal optical fiber based on Dirac point

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Embodiment Construction

[0027] Such as figure 1 Shown are the structures and modes of the photonic crystal resonator and photonic crystal fiber involved in this embodiment. The structure extends in the longitudinal direction and remains unchanged. Photonic crystal resonators and photonic crystal fibers are formed by introducing defects into the center of the photonic crystal structure. When the mode is transmitted along the longitudinal direction (wave vector k z ≠0) figure 1 The shown structure represents a photonic crystal fiber when the mode does not propagate in the longitudinal direction (wave vector k z =0) figure 1 The shown structure represents a photonic crystal resonator. figure 2 (a) is a schematic diagram of the photonic crystal geometric unit corresponding to the structural envelope layer of a 2D triangular photonic crystal resonator composed of dielectric rods and a photonic crystal fiber. figure 2 (b) is a schematic diagram of the first Brillouin zone in the inverse lattice spa...

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Abstract

The invention discloses a photonic crystal resonant cavity and a photonic crystal optical fiber based on a Dirac point. The photonic crystal resonant cavity and the photonic crystal optical fiber based on the Dirac point are characterized in that the mutual effect between two-dimensional local area modes supported by the photonic crystal resonant cavity and the photonic crystal optical fiber based on the Dirac point is in long range, the local area mode intensity is attenuated in space according to the power function r-3/2 of the distance, phases of the modes are jumped between two states, the phase characteristic of a standing wave is displayed, a quality factor of the modes is linearly increased along with the area of the resonant cavity, when the absorption of the materials is not considered, the size of the resonant cavity can be increased so as to improve the quality factors of the modes without limit, and meanwhile, the modes do not only exist in the Dirac frequency and further exist in other frequencies within a certain range surrounding the Dirac frequency.

Description

technical field [0001] The invention relates to a photonic crystal energy band structure, a resonant cavity and a waveguide technology, in particular to a novel photonic crystal resonant cavity and a photonic crystal fiber formed based on the photonic crystal Dirac point. Background technique [0002] Photonic crystal resonators and photonic crystal fibers can be formed by relying on the photonic crystal photonic bandgap to suppress the divergence of light. An important application of photonic crystals is the construction of optical resonators and waveguides. Optical resonators and waveguides are important basic units of modern photonics systems. Integrated optical modules such as micro lasers, couplers, filters, and power splitters can be formed through the combination of basic components such as resonators and waveguides. The way of combination determines the interaction characteristics between the combination units, and then determines the function of the integrated opti...

Claims

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Application Information

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IPC IPC(8): G02B6/26G02B6/02
Inventor 谢康姜海明李坚
Owner HEFEI UNIV OF TECH
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