Plasma excimer gain waveguide

A plasmon and waveguide technology, which is applied in the field of optical waveguides, can solve the problems of weakened coupling between gain waveguides and metal plasmons, poor optical locality, and reduced threshold gain, so as to achieve long propagation distance and increase propagation distance. , improve the local effect

Active Publication Date: 2012-09-12
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI +1
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Problems solved by technology

However, there is also a contradiction between threshold gain and locality in this structure. In order to reduce the threshold gain of gain waveguide coupled plasmon propagation, the thickness of the isolation layer can be increased to keep the gain waveguide structure away fr

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Embodiment 1

[0045] figure 1 Shown is a structural diagram of Embodiment 1 of a plasmon gain waveguide provided by the present invention. figure 1 Among them, the x-axis, y-axis and z-axis respectively represent the coordinate axes x-axis, y-axis and z-axis, the direction of the z-axis is perpendicular to the surface of the figure, and the positive direction of the z-axis is outward.

[0046] The first embodiment provides a plasmon gain waveguide 103, including a base layer 101, a dielectric layer 102, an isolation layer 111 and a gain waveguide 103, the dielectric layer 102 is placed on the exposed surface of the base layer 101, and the isolation layer 111 Between the dielectric layer 102 and the gain waveguide 103, the end of the gain waveguide 103 close to the dielectric layer 102 is wedge-shaped and the tip faces the dielectric layer 102, and the refractive index of the gain waveguide 103 is greater than the The refractive index of the isolation layer 111 is described above.

[0047]...

Embodiment 2

[0064] Figure 9 Shown is a structural diagram of Embodiment 2 of a plasmon gain waveguide provided by the present invention. Figure 9 Among them, the x-axis, y-axis and z-axis respectively represent the coordinate axes x-axis, y-axis and z-axis, the direction of the z-axis is perpendicular to the surface of the figure, and the positive direction of the z-axis is outward.

[0065] This embodiment provides a plasmon gain waveguide 903, which includes a base layer 901, a dielectric layer 902, an isolation layer 904, and a gain waveguide 903. The dielectric layer 902 is placed on the exposed surface of the base layer 101, and the isolation layer 904 mediates Between the dielectric layer 902 and the gain waveguide 903, one end of the gain waveguide 903 close to the dielectric layer 902 is wedge-shaped with the tip facing the dielectric layer 902, and the refractive index of the gain waveguide 903 is larger than the The refractive index of the isolation layer 904 .

[0066] Fi...

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Abstract

The invention relates to the field of optical waveguide technology. The invention provides a plasma excimer gain waveguide, including a base layer, a medium layer, an isolation layer and a gain waveguide. The medium layer is placed on the bare surface of the base layer. The isolation layer is between the medium layer and the gain waveguide. One end of the gain waveguide near the dielectric layer is wedge-shaped and the tip faces the dielectric layer. The refractive index of the gain waveguide is greater than that of the isolation layer. The plasma excimer gain waveguide has the advantages that one end of the gain waveguide near the dielectric layer is wedge-shaped, the distance between the top of the wedge-shaped structure and the metal is fixed, the isolation layer with low refractive index is kept, and the plasma excimer coupling of the gain waveguide and the metal is improved by adjusting the angle of the wedge-shaped point angle.

Description

technical field [0001] The invention relates to the field of optical waveguide technology, in particular to a plasmon gain waveguide. Background technique [0002] The collective oscillations generated by the electron gas at the metal-dielectric interface under the excitation coupling of electromagnetic waves exhibit singular optical properties, which are so-called surface plasmon properties. Its light field intensity attenuates exponentially in the vertical direction at the interface between the metal and the dielectric, and can confine the light to a range of tens of nanometers or even smaller on the metal surface, which can break through the traditional light diffraction limit. The super-strong optical locality of surface plasmon polaritons shows great application potential in the fields of nanophotonics and optoelectronic integration, and provides the possibility to realize nanolaser light sources and highly integrated nanophotonics devices. [0003] In the practical ap...

Claims

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Application Information

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IPC IPC(8): G02B6/122G02B6/10
Inventor 黄增立王建峰刘争晖徐科杨辉
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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