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All-fiber high-speed phase modulator based on acousto-optic effect

A phase modulator and all-fiber technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of complex structure and low modulation efficiency of optical fiber phase modulators, to ensure phase modulation effect, high modulation efficiency, and reduce operation required effect

Pending Publication Date: 2022-04-15
CHONGQING UNIV
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Problems solved by technology

[0003] The invention provides an all-fiber high-speed phase modulator based on the acousto-optic effect to solve the problems of complex structure and low modulation efficiency of the current optical fiber phase modulator

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  • All-fiber high-speed phase modulator based on acousto-optic effect
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  • All-fiber high-speed phase modulator based on acousto-optic effect

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0025] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be Directly connected or indirectly connected through an intermediary, those skilled in the art can understand the specific meanings of the above terms according to specific situations.

[0026] In the present invent...

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Abstract

The invention provides an all-fiber high-speed phase modulator based on acousto-optic action, which comprises a surface acoustic wave generating device and an optical fiber, the surface acoustic wave generating device is used for generating a surface acoustic wave band, the optical fiber is perpendicular to the propagation direction of the surface acoustic wave band and is arranged in an area where the surface acoustic wave band exists, and the surface acoustic wave band is coupled with the optical fiber. Strain is generated in the optical fiber, so that the refractive index in the optical fiber is changed, and high-speed phase modulation of the optical fiber is realized. The optical fiber is fixed at the position where the surface acoustic wave band exists in the direction perpendicular to the propagation direction of the surface acoustic wave band, so that the refractive index in the optical fiber is changed, the surface acoustic wave band is band-shaped, and the whole section of the optical fiber can be fixed at the position where the surface acoustic wave band exists, namely, the surface acoustic wave band can perform phase modulation on the whole section of the optical fiber at the same time; therefore, the modulation efficiency is high, the optical fiber phase modulation can be realized only by adopting one acoustic surface wave generation device, and the structure is simpler.

Description

technical field [0001] The invention belongs to the field of optical fiber phase modulation, in particular to an all-fiber high-speed phase modulator based on acousto-optic effect. Background technique [0002] Optical fiber phase modulation is widely used in the fields of photoelectric information conversion, optical information processing, and photoelectric sensing. However, the current optical fiber phase modulators usually have complex structures and low modulation efficiency. Contents of the invention [0003] The invention provides an all-fiber high-speed phase modulator based on the acousto-optic effect to solve the problems of complex structure and low modulation efficiency of the current optical fiber phase modulator. [0004] According to the first aspect of the embodiments of the present invention, there is provided an all-fiber high-speed phase modulator based on acousto-optic effects, including a surface acoustic wave generating device and an optical fiber, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/11G02F1/125
CPCG02F1/11G02F1/125
Inventor 黄礼刚刘顺溧郑博文朱涛
Owner CHONGQING UNIV
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