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Period polarized magnesium doped lithium niobate all light switch and preparation process thereof

A magnesium lithium niobate, all-optical switch technology, applied in optics, nonlinear optics, electromagnetic wave transmission systems, etc., can solve the problem of not meeting the requirements of audio and video transmission systems, low switching response speed, and not enough to meet high-speed optical fibers Communication and other issues, to achieve the best performance and application prospects, control small optical power, and improve the effect of output switching efficiency

Inactive Publication Date: 2005-01-05
NANKAI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the mechanical optical switch was developed earlier, and the response speed of this type of switch is low, generally requiring milliseconds. Although it can meet the requirements of the test work, it cannot meet the requirements of audio and video transmission systems, let alone meet the needs of high-speed optical fiber communication.

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  • Period polarized magnesium doped lithium niobate all light switch and preparation process thereof

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Embodiment Construction

[0009] This periodically polarized magnesium-doped lithium niobate all-optical switch is a wafer with a size of about 20×25×1.0mm, a highly magnesium-doped lithium niobate crystal material, with a fan-shaped variable periodic polarization structure4, annealed proton exchange optical waveguide5 , an all-optical switch with strong anti-photorefractive ability and low anodic polarization electric field structure.

[0010] The preparation process of this periodically polarized magnesium-doped lithium niobate all-optical switch: use high-magnesium-doped lithium niobate crystals, and cut them into wafers with a size of about 20×25×1.0 mm along the three crystal directions X, Y, and Z , polishing and polarizing the wafer, fabricating a periodic inversion grating region structure 4, and performing proton exchange annealing process to obtain an annealed proton exchange optical waveguide 5.

[0011] The described polishing process, polarization, and annealing treatment to the wafer are ...

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Abstract

The invention refers to a new periodic polarized magnesian lithium niobate acid all optical switch and the making method. The project: use the high-magnesian biobic acid crystal, cut into the pieces, polish, polarize and etch the piece to make the reverse grating area and the proton anneal exchange optical wave-guide, and thus get the all-optical switch. it can realize the THz modulation.

Description

technical field [0001] The invention relates to an optical switch and a preparation process thereof, in particular to an all-optical switch made of a novel periodic poled magnesium-doped lithium niobate crystal and the preparation process thereof, belonging to the field of optical communication devices. Background technique [0002] Fiber-intensive multi-wavelength division multiplexing (DWDM) can increase the transmission capacity of optical fibers. Complex high-speed optical transmission networks containing multiple nodes require effective all-optical switches to directly switch and turn off optical information to prevent wavelength blocking and allow wavelengths to be reused. , Improve the flexibility of network management. There are roughly two types of optical switches used in optical information processing technology: mechanical and optical. Among them, the mechanical optical switch was developed earlier, and the response speed of this type of switch is low, generally...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/035H04J14/02
Inventor 陈云琳楼慈波刘晓娟许京军陈绍林黄自恒
Owner NANKAI UNIV