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Right-angle output double-way inverted optical clock signal generator with photonic crystal T-type waveguide

A photonic crystal and clock signal technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of inability to use optical circuit integration, large volume, etc., and achieve the effects of large practical value, small structure and wide operating wavelength range.

Inactive Publication Date: 2016-05-11
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional dual-channel optical clock signal generator with adjustable duty cycle and mutual logical negation applies the principle of geometric optics, so it is relatively large in size and cannot be used in optical circuit integration.

Method used

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  • Right-angle output double-way inverted optical clock signal generator with photonic crystal T-type waveguide
  • Right-angle output double-way inverted optical clock signal generator with photonic crystal T-type waveguide
  • Right-angle output double-way inverted optical clock signal generator with photonic crystal T-type waveguide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] 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

[0073] 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=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 Figure 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. pass Figure 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 the dual-channel anti-phase optical clock signal generator under different wavelength duty ratios 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 light field simulation diagram obtained is calculated by the finite element software COMSOL. It can be observed that the TE ...

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Abstract

The invention discloses a right-angle output double-way inverted optical clock signal generator with a photonic crystal T-type waveguide. The optical clock signal generator comprises the photonic crystal T-type waveguide with a TE forbidden band and further comprises one input end (1), two output ends (2 and 3), background silicon dielectric cylinders (4), isosceles right triangle defect dielectric cylinders (5), a defect dielectric cylinder (6), an electromagnet (7) providing a bias magnetic field and a rectangular wave current source (9). The left end of the photonic crystal T-type waveguide is the input end (1), the output ends (2 and 3) are located at the right end and the upper end of the photonic crystal T-type waveguide respectively, the defect dielectric cylinder (6) is located in the center intersection position of the T-type waveguide, and the four isosceles right triangle defect dielectric cylinders (5) are located at the four intersecting corners of the T-type waveguide respectively; TE carrier wave light is input through the port (1) of the photonic crystal T-type waveguide, and two ways of optical clock signals opposite in phase are output from the ports (2 and 3). The TE light double-way inverted optical clock signal generator can be obtained efficiently.

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 right-angle output dual-channel anti-phase optical clock signal generator. Background technique [0002] The traditional dual-channel optical clock signal generator with adjustable duty cycle and mutual logical negation applies the principle of geometric optics, so the volume is relatively large and cannot be used in optical circuit integration. The combination of magneto-optical materials and new photonic crystals has proposed many photonic devices, the most important property of which is the gyromagnetic non-reciprocity of electromagnetic waves under a bias magnetic field, so that magnetic photonic crystals not only have optical properties, but also have greater Transmission bandwidth and higher propagation efficiency. On the basis of photonic crystals, tiny devices can be fabricated, including dual-channel anti-phas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/095G02B6/122
CPCG02B6/1225G02F1/095G02F2202/32G02F1/0151G02B6/122
Inventor 欧阳征标吴昌义金鑫
Owner SHENZHEN UNIV
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