Lithium niobate substrate clamp with liquid level detection function and proton exchange method

A technology of liquid level detection and proton exchange, which is applied in the field of integrated optics, can solve problems such as temperature fluctuations of proton exchange liquid, and achieve the effect of simple structure, high reliability, and simple working principle

Inactive Publication Date: 2019-09-27
BEIHANG UNIV
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Problems solved by technology

[0005] In view of this, the present invention provides a lithium niobate substrate fixture with a liquid level detection function and a proton exchange method to solve the problem of large temperature fluctuations of the proton exchange liquid in the proton exchange process

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  • Lithium niobate substrate clamp with liquid level detection function and proton exchange method
  • Lithium niobate substrate clamp with liquid level detection function and proton exchange method
  • Lithium niobate substrate clamp with liquid level detection function and proton exchange method

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only examples and not intended to limit the present application.

[0035] A lithium niobate substrate fixture with a liquid level detection function provided by an embodiment of the present invention, such as figure 1 and figure 2 as shown, figure 2 for figure 1 The cross-sectional view includes: a lithium niobate substrate slot block 1, a hollow cylindrical slot block clamping rod 2, a hollow cylindrical sensing rod 3, and a hollow cylindrical sleeve 4 , a positioning pin 5 for fixing the sensing rod 3 and the sleeve 4, a high temperature resistant microporous ceramic filter sheet 6, a high temperature resistant water absorbent sponge 7, a humidity sensitive element 8 and a fixed block 9 located in the sleeve 4, and A...

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Abstract

The invention discloses a lithium niobate substrate clamp with a liquid level detection function and a proton exchange method. When a microporous ceramic filter piece at the bottom of the clamp is in contact with proton exchange liquid, the proton exchange liquid is adsorbed on water absorption sponge through the capillary action; a humidity-sensitive element is wetted to change a resistance value of the humidity-sensitive element so as to change the brightness of a signal indicator lamp in a detection circuit; and a signal prompt that the liquid level of the proton exchange liquid is detected at the bottom of the clamp is given. During proton exchange, before a lithium niobate substrate is immersed in the proton exchange liquid for the proton exchange, the liquid level detection function of the clamp can be utilized for enabling the bottom of the clamp to be in contact with the liquid surface of the proton exchange liquid for secondary preheating to enable a temperature difference between the part, loaded with the lithium niobate substrate, of the clamp and the proton exchange liquid to tend to be zero, so that the temperature fluctuation caused by immersion of the lithium niobate substrate in the proton exchange liquid in the proton exchange process can be reduced, and the stability and repeatability of making a lithium niobate optical waveguide by the proton exchange can be improved.

Description

technical field [0001] The invention relates to the technical field of integrated optics, in particular to a lithium niobate substrate fixture with a liquid level detection function and a proton exchange method. Background technique [0002] With the continuous development of integrated optical technology, integrated optical waveguide devices have been widely used due to their advantages of small size and diverse functions. In the fiber optic gyro system, the lithium niobate optical waveguide modulator can be used to replace the beam splitter, polarizer and phase modulator in the all-fiber solution, that is, the lithium niobate optical waveguide can integrate three functions, which can effectively reduce the The small size of the gyroscope reduces the number of fiber fusion points. Compared with the all-fiber gyroscope, the integrated optical gyroscope has a larger modulation bandwidth. [0003] At present, the method of using proton exchange to manufacture lithium niobate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12G02B6/134
CPCG01N27/125G02B6/1345
Inventor 宋镜明宋凝芳戴念潘雄徐小斌
Owner BEIHANG UNIV
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