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Grating preparation method and grating

A technology of grating and cutting direction, applied in diffraction grating, optics, optical components and other directions, can solve problems such as poor grating stability

Active Publication Date: 2020-07-28
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a grating preparation method and a grating, aiming to solve the problem of poor stability of the grating preparation in the prior art

Method used

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  • Grating preparation method and grating
  • Grating preparation method and grating
  • Grating preparation method and grating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Please refer to figure 2 , the grating preparation method is applied to a grating preparation device, the grating preparation device includes a substrate, and the grating preparation method includes:

[0073] S100, sequentially forming material layers on the substrate through thermoplastic materials, wherein the materials of each adjacent material layer are different;

[0074] Among them, thermoplastics are plastics that are plastic at a certain temperature, solidify after cooling, and can repeat this process. The grating preparation device forms the material layer on the substrate by spraying or coating.

[0075] Wherein, since the Bragg grating is alternately composed of materials with different refractive indices, in order to meet the performance requirements of the prepared grating, the refractive index of the first material is not equal to the refractive index of the second material. In a specific embodiment, the The grating is composed of two thermoplastic mate...

Embodiment 2

[0085] Please refer to image 3 , in Embodiment 1, the above step S100 includes:

[0086] S110, heating the thermoplastic material;

[0087] S120, if it is detected that the material temperature of the thermoplastic material is greater than or equal to a preset melting temperature, sequentially forming material layers with the thermoplastic material.

[0088] Wherein, when the thermoplastic material is sprayed or coated to form the material layer on the substrate, in order to ensure the fluidity of the thermoplastic material, it is necessary to first heat the thermoplastic material to the corresponding melting temperature, After the thermoplastic material is melted into a liquid, the thermoplastic material is sprayed or coated.

[0089] Specifically, when it is detected that the material temperature of the thermoplastic material is greater than the preset melting temperature, the thermoplastic material is in a liquid state, and the thermoplastic material is in a flowable liq...

Embodiment 3

[0093] Please refer to Figure 4 , in Embodiment 1, the above step S500 includes:

[0094] S510, stretching the stacked material;

[0095] Wherein, after the stacked material is formed by alternately coating the first material layer and the second material layer, due to the large size requirements of different gratings, and the thickness of the stacked material cannot completely conform to the thickness of the grating. Therefore, the stacked material can be stretched to change the thickness of the stacked material, thereby facilitating the preparation of the grating. Specifically, the stretching operation can be performed on the stacked material by a stretching device, the stretching device includes clamping mechanisms arranged oppositely, the two clamping mechanisms clamp the two side edges of the stacked material, and moving in directions away from each other, so as to drive the deformation of the stacked material and change the thickness of the stacked material.

[0096]...

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Abstract

The invention discloses a grating preparation method and a grating, and the grating preparation method comprises the steps: sequentially forming material layers on a substrate through a thermoplasticmaterial, and enabling the adjacent material layers to be made of different materials; after each material layer is formed, obtaining the temperature of the currently formed material layer; when the temperature is lower than a preset temperature corresponding to the currently formed material layer, forming a next material layer on the currently formed material layer; when the total thickness of the material layers reaches a preset thickness, separating the substrate from a stacked material composed of the plurality of material layers; and cutting the stacked material to obtain the grating. Theinvention provides a grating preparation method and a grating, and aims to solve the problem of poor stability of grating preparation in the prior art.

Description

technical field [0001] The invention relates to the technical field of optical device preparation, in particular to a grating preparation method and the grating. Background technique [0002] A grating is a commonly used optical device, and the commonly used grating is made by engraving a large number of parallel grooves on a glass sheet. The Bragg grating is a kind of fiber grating with uniform grating pitch, the reflection wavelength is very small, and the distance between the reflection points of the Bragg grating is always equal. [0003] When preparing the existing Bragg gratings, it is necessary to expose the polymer sample to light and dark fringes using double-beam interference light. During the exposure process, the requirements for the exposure environment are relatively high, and changes in the environment will affect the exposure quality. As a result, the quality of gratings produced in the same batch varies greatly, and the stability of grating preparation is p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/18
CPCG02B5/1847G02B5/1852
Inventor 杨镇源赵东峰李琨赵恩杜凯凯程鑫
Owner GOERTEK OPTICAL TECH CO LTD
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