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Surface plasma transmission device for graphene waveguide full-course compensation excited by periodic diffraction corrugation

A technology of surface plasmon and graphene, which is applied in the field of optical communication, can solve problems such as the application of photon loop optical communication that cannot be realized

Inactive Publication Date: 2015-04-29
GUANGXI NORMAL UNIV
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Problems solved by technology

[0003] "Physical Review Letters" published the article "Channel plasmon-polariton guiding by subwavelength metal grooves" on page 046802, Volume 95, Issue 4, 2005. Bozhevolnyi's team at Aalborg University in Denmark used focused ion beam etching and near-field scanning The V-groove SPPs waveguide device discovered by optical microscopy. They also designed a wavelength division multiplexer and a Bragg grating filter based on the MIM structure to achieve the filtering characteristics of the SPPs wave. However, the SPPs propagation distance is only 10 μm. This obviously cannot realize the application of photonic circuit and optical communication

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  • Surface plasma transmission device for graphene waveguide full-course compensation excited by periodic diffraction corrugation

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Embodiment

[0019] refer to figure 1 , a surface plasmon propagation device fully compensated by a graphene waveguide excited by periodic diffraction folds, including Si substrate 1 and SiO oxidized from Si substrate 2 Dielectric layer 2, in SiO 2 The surface of the dielectric layer 2 is provided with a graphene waveguide 5 for propagating surface plasmons, one end of the graphene waveguide 5 is etched with a wrinkled structure 4 that excites SPPs, and the other end of the graphene waveguide 5 is SiO 2 The medium layer 2 is filled with a dye gain medium 6 .

[0020] The SiO 2 The dielectric layer 2 is formed on the Si substrate 1 under an oxygen environment, and has a thickness of 800 nm.

[0021] The graphene waveguide 5 is a graphene strip waveguide.

[0022] The graphene strip waveguide is in SiO 2 A graphene strip waveguide is etched in the dielectric layer 2 by using an electron beam exposure mask method with an etching depth of 600 nm.

[0023] The dye gain medium 6 is a dye g...

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Abstract

The invention discloses a surface plasma transmission device for graphene waveguide full-course compensation excited by periodic diffraction corrugation. The surface plasma transmission device comprises an Si substrate and a SiO2 medium layer oxidized by the Si substrate, and is characterized in that a graphene waveguide for transmitting surface plasmas is arranged on the surface of the graphene waveguide; a corrugation structure for exciting SPPs is engraved at one end of the graphene waveguide; the SiO2 medium layer on the side at the other end of the graphene waveguide is filled with an incremental medium. According to the device, the bottlenecks that an element is large in size and high in integration difficulty in an SPPs transmission distance increasing process can be overcome, and the noise loss generated by spontaneous radiation in a channel can be avoided; the cost is low, and implementation is easy.

Description

technical field [0001] The invention relates to optical communication technology, in particular to a surface plasmon propagation device with full compensation of graphene waveguide excited by periodic diffraction folds. Background technique [0002] At present, Surface plasmon polaritons (SPPs) play an important role in manipulating light energy at the nanometer level, and have become a new type of technology in the fields of broadband communication systems and tiny photonic circuits. Technology has realized the design of various signal transmission and photonic devices, especially the Nikolajsen research team in Denmark used the thermo-optic effect to realize optical modulators and optical switches on metal strips embedded in polymer materials, and used 20nm thick gold plate waveguides The transmission loss is as low as 6 dB / cm in the optical communication wavelength window, but the mode size of this waveguide reaches 12 μm. In a large number of studies on the design and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122
CPCG02B6/1226
Inventor 朱君秦柳丽宋树祥
Owner GUANGXI NORMAL UNIV
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