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Triangular lattice photonic crystal waveguide based on air column and lithium niobate air column structure

A photonic crystal waveguide and triangular lattice technology, applied in the field of integrated optics, can solve the problems of small waveguide turning angle, high transmission loss, and low transmission bandwidth, and achieve high transmission bandwidth, high transmission efficiency, and high turning radius.

Active Publication Date: 2020-05-22
CHONGQING UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a triangular lattice photonic crystal waveguide based on air column and lithium niobate air column structure to solve the problems of small turning angle, high transmission loss, low transmission bandwidth and inability to integrate traditional waveguides

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  • Triangular lattice photonic crystal waveguide based on air column and lithium niobate air column structure

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[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] The present invention designs two curved film waveguides for a two-dimensional triangular lattice photonic crystal with lithium niobate and air medium as the base material. They are a triangular lattice photonic crystal waveguide based on an air column structure and an air column structure based on lithium niobate. Triangular lattice photonic crystal waveguide. The two kinds of waveguides realize high-bandwidth and high-efficiency...

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Abstract

The invention discloses a triangular lattice photonic crystal waveguide based on an air column and lithium niobate air column structure. The triangular lattice photonic crystal forms guided waves forelectromagnetic waves with corresponding frequencies by introducing photonic local characteristics after defects are introduced, and due to the fact that the waveguide width of the triangular latticephotonic crystal is in the nanoscale, the designed 60-degree bent waveguide can guarantee the high turning radius, and meanwhile the extremely high transmission efficiency and transmission bandwidth are obtained. According to the triangular lattice photonic crystal waveguide based on the air column and lithium niobate air column structure, the problems of waveguide miniaturization, high transmission bandwidth and low transmission loss in integrated optics can be solved, and an excellent solution of bent waveguide design is provided for future integrated optics.

Description

Technical field [0001] The invention relates to the technical field of integrated optics, in particular to a triangular lattice photonic crystal waveguide based on an air column and a lithium niobate air column structure. Background technique [0002] Materials, energy and information are the three pillars of today's world civilization. Today’s society is rapidly developing information technology. Information and communication technologies and applications are quite extensive. Various electronic products appear in all aspects of our lives. The rapid growth of information floods our lives. This allows us to process and store information. Capacity puts forward new requirements. At the same time, more efficient, high-speed, and miniaturized integration methods continue to change, and chip sizes continue to decrease. Since the establishment of the Department of Semiconductor Physics in the last century, electronics have become the main information carrier in integrated chips. Howev...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122
CPCG02B6/1225G02B2006/1204G02B2006/12083
Inventor 余华石崇钰袁俊陆锦东
Owner CHONGQING UNIV
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