Tamm plasmon ridge waveguide with long transmission distance
A ridge waveguide and transmission distance technology, applied in the field of micro-nano photonics, can solve problems such as large transmission loss, and achieve the effect of improving transmission distance, easy availability of materials, and easy realization of production and preparation processes
Active Publication Date: 2020-11-03
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
Although the surface plasmon optical waveguide has good optical field confinement ability, due to the existence of ohmic loss, the transmission loss is relatively large, and the transmission distance is usually only a few microns
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[0029] The present invention aims at the dependence of the surface plasmon waveguide and the hybrid surface plasmon waveguide on the polarization state of the incident light and the short transmission distance, etc., and proposes a method that can be applied to high-density photon integration, all-optical networks, etc. The long transmission distance Tamm plasmonic ridge waveguide in each technology is as follows.
[0030] like figure 1 As shown, a long transmission distance Tamm plasmonic ridge waveguide includes a substrate 1 and a ridge waveguide structure disposed on the substrate 1; the ridge waveguide structure is composed of a noble metal layer 2 and a photonic crystal 3 Composition, the photonic crystal 3 is disposed between the substrate 1 and the noble metal layer 2, and the width w of the ridge waveguide structure is 2000 nm.
[0031] The material of the noble metal layer 2 is gold or silver. In the embodiment of this solution, the material of the noble metal laye...
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Abstract
The invention discloses a Tamm plasmon ridge waveguide with a long transmission distance. The Tamm plasmon ridge waveguide comprises a substrate and a ridge waveguide structure arranged on the substrate, the ridge waveguide structure is composed of a noble metal layer and a photonic crystal, and the photonic crystal is arranged between the substrate and the noble metal layer; the photonic crystalis of a multi-layer structure and is composed of high-refractive-index dielectric layers and low-refractive-index dielectric layers which are alternately stacked from top to bottom. The long-transmission-distance Tamm plasmon ridge waveguide provided by the invention is compact in structure and reasonable in layout, not only is beneficial to photon integration in a waveguide use process, but alsofully improves the transmission distance of a Tamm plasmon mode.
Description
technical field [0001] The invention relates to a ridge waveguide, in particular to a long transmission distance Tamm plasmon ridge waveguide applicable to various technologies such as high-density photon integration and all-optical network, and belongs to the field of micro-nano photonics. Background technique [0002] The electromagnetic surface wave is a special electromagnetic wave bound on the medium interface. The most famous electromagnetic surface wave is the surface plasmon polaritons (SPPs) excited on the medium-metal interface. Its essence is in the The interaction between the light on the medium-metal interface and the free electrons on the metal surface excites and couples the electromagnetic oscillation of the charge density fluctuation, which has the characteristics of near-field enhancement, surface confinement, and short wavelength, and can break through the diffraction limit. one of the methods. SPPs can be divided into two categories according to the mode...
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IPC IPC(8): G02B6/122
CPCG02B6/1226
Inventor 陆云清苏宁杰许炯许吉王瑾
Owner NANJING UNIV OF POSTS & TELECOMM