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Photonic crystal waveguide dual-channel anti-phase optical clock signal generator

A photonic crystal waveguide and clock signal technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of large volume and cannot be integrated with optical circuits, and achieve the effect of small structure, large practical value, and high optical transmission efficiency.

Inactive Publication Date: 2021-02-19
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional dual-channel optical clock signal generators apply the principle of geometric optics, so they are relatively large and cannot be used for optical circuit integration

Method used

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  • Photonic crystal waveguide dual-channel anti-phase optical clock signal generator
  • Photonic crystal waveguide dual-channel anti-phase optical clock signal generator
  • Photonic crystal waveguide dual-channel anti-phase optical clock signal generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] In this embodiment, the function of a two-way anti-phase optical clock signal generator at different wavelengths can be realized by changing the lattice constant in equal proportions without considering the dispersion or the dispersion of the material changes very little. Let parameter a=6.1772×10 -3 [m],d 2 =0.3a,d 3 =0.2817a,d 5 =1.2997a, μ=9.6125, p=0.7792, normalized light wave frequency ωa / 2πc=0.4121, other parameters remain unchanged, so that it corresponds to 20GHz light wave. refer to Figure 5 , the logic contrast in the band-gap optical frequency range is obtained through simulation calculation, and the structure has the function of high logic contrast and double-way anti-phase optical clock signal generator.

Embodiment 2

[0072] In this embodiment, the function of a dual-channel anti-phase optical clock signal generator at different wavelengths can be realized by changing the lattice constant in equal proportions without considering the dispersion or the dispersion of the material changes very little. Let parameter a=4.1181×10 -3 [m],d 2 =0.3a,d 3 =0.2817a,d 5 =1.2997a, μ=9.6125, p=0.7792, normalized light wave frequency ωa / 2πc=0.4121, other parameters remain unchanged, so that it corresponds to 30GHz light wave. refer to Image 6 , the logic contrast in the band-gap optical frequency range is obtained through simulation calculation, and the structure has the function of high logic contrast and double-way anti-phase optical clock signal generator.

[0073] pass Image 6 It can be seen that when the normalized light wave frequency ωa / 2πc=0.4121, the logic contrast can reach 48dB.

Embodiment 3

[0075] In this embodiment, the function of a dual-channel anti-phase optical clock signal generator at different wavelengths can be realized by changing the lattice constant in equal proportions without considering the dispersion or the dispersion of the material changes very little. Let parameter a=3.0886×10 -3 [m],d 2 =0.3a,d 3 =0.2817a,d 5 =1.2997a, μ=9.6125, p=0.7792, normalized light wave frequency ωa / 2πc=0.4121, other parameters remain unchanged, so that it corresponds to 40GHz light wave. refer to Figure 7 , the logic contrast in the band-gap optical frequency range is obtained through simulation calculation, and the structure has the function of high logic contrast and double-way anti-phase optical clock signal generator.

[0076] pass Figure 8 It can be seen that, when the normalized light wave frequency ωa / 2πc=0.4121, the simulation diagram of the light field is obtained through calculation by the finite element software COMSOL. It can be seen from this that ...

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Abstract

The invention discloses a photonic crystal waveguide dual-path inversion optical clock signal generator, which includes a photonic crystal T-shaped waveguide with a TE band gap, an input end (1), two output ends (2, 3 ), a background silicon dielectric pillar (4), an isosceles right triangle defect dielectric pillar (5) and a defect dielectric pillar (6), an electromagnet (7) providing a bias magnetic field and a rectangular wave current source (9); The left end of the crystal T-shaped waveguide is the input end (1), and the output ends (2, 3) are respectively located at the lower end and upper end of the photonic crystal T-shaped waveguide, in a straight line layout; the defect dielectric column (6) is located at the intersection of the center of the T-shaped waveguide ; Four isosceles right-angled triangle defect dielectric columns (5) are respectively located at the four corners where the T-shaped waveguide intersects; the photonic crystal waveguide inputs TE light from the port (1), and then outputs two paths with opposite phases from the ports (2, 3) optical clock signal. The invention is convenient for integration, and can efficiently realize the TE optical dual-path anti-phase optical clock signal generator.

Description

technical field [0001] The invention relates to a dual-path anti-phase optical clock signal generator, in particular to a photonic crystal T-shaped waveguide transverse output dual-channel anti-phase optical clock signal generator. Background technique [0002] Traditional dual-channel optical clock signal generators apply the principle of geometric optics, so they are relatively large in size and cannot be used for optical circuit integration. The combination of magneto-optical materials and new photonic crystals has led to the proposal of many photonic devices. The most important property of them is the gyromagnetic non-reciprocity of electromagnetic waves under the bias magnetic field, so that the magnetic photonic crystals not only have optical properties, but also have larger transmission bandwidth and higher transmission efficiency. On the basis of photonic crystals, tiny devices can be fabricated, including dual-channel anti-phase optical clock signal generators. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/095G02B6/122
CPCG02B6/1225G02F1/095G02B6/122
Inventor 欧阳征标吴昌义金鑫
Owner SHENZHEN UNIV