A kind of optical fiber humidity sensor based on tungsten disulfide and preparation method thereof

A technology of humidity sensor and tungsten disulfide, which is applied in instruments, scientific instruments, and material analysis through optical means, can solve problems such as complex structure, and achieve the effect of low production cost and simple structure

Active Publication Date: 2019-06-21
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the patent has high sensitivity and resolution, the structure is complex

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  • A kind of optical fiber humidity sensor based on tungsten disulfide and preparation method thereof
  • A kind of optical fiber humidity sensor based on tungsten disulfide and preparation method thereof
  • A kind of optical fiber humidity sensor based on tungsten disulfide and preparation method thereof

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Embodiment 1

[0033] A preparation method of an optical fiber humidity sensor based on tungsten disulfide, comprising the steps of:

[0034] S1. Preparation of side-polished single-mode optical fiber: by polishing, a part of the cladding and fiber core of the optical fiber is removed to form a flat area of ​​a certain length on the surface of the optical fiber, that is, the polishing area; the polishing of the side-polished optical fiber The remaining depth of the grinding surface is 61μm (a part of the fiber core is polished off), and the length of the polishing area is 13.5mm;

[0035] S2, deposition of tungsten disulfide film layer: as figure 1 , use UV glue to fix the side polished part on the glass slide, with the polished side facing up, then use UV glue to make a groove around the polished area, the size of the groove is 2×0.5×0.1cm 3 , drop the tungsten disulfide dispersion into the tank, place it at room temperature, wait until the water and alcohol evaporate naturally, and form ...

Embodiment 2

[0049] A preparation method of an optical fiber humidity sensor based on tungsten disulfide, comprising the steps of:

[0050] S1. Preparation of side-polished single-mode optical fiber: by polishing, a part of the cladding and fiber core of the optical fiber is removed to form a flat area of ​​a certain length on the surface of the optical fiber, that is, the polishing area; the polishing of the side-polished optical fiber The remaining depth of the grinding surface is 70μm (a part of the fiber core is polished off), and the length of the polishing area is 5mm;

[0051] S2. Deposit tungsten disulfide film layer: Use UV glue to fix the side polishing part on the glass slide, with the polishing side facing up, and then use UV glue to make a groove around the polishing area, the size of the groove is 2×0.5× 0.1cm 3 , drop the tungsten disulfide dispersion into the tank, place it at room temperature, wait until the water and alcohol evaporate naturally, and form a tungsten disu...

Embodiment 3

[0055] A preparation method of an optical fiber humidity sensor based on tungsten disulfide, comprising the steps of:

[0056] S1. Preparation of side-polished multimode optical fiber: remove part of the cladding and fiber core of the fiber by polishing, and form a flat area of ​​a certain length on the surface of the fiber, that is, the polishing area; the polishing surface is 1.5 μm away from the fiber core , the length of the polishing area is 30mm;

[0057] S2. Deposit tungsten disulfide film layer: Use UV glue to fix the side polishing part on the glass slide, with the polishing side facing up, and then use UV glue to make a groove around the polishing area, the size of the groove is 3×2× 0.5cm 3 , drop the tungsten disulfide dispersion into the tank, place it at room temperature, wait until the water and alcohol evaporate naturally, and form a tungsten disulfide film on the polishing area.

[0058] The tungsten disulfide dispersion is prepared by uniformly dispersing ...

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Abstract

The invention discloses an optical fiber humidity sensor based on tungsten disulfide and a manufacturing method thereof. A tungsten disulfide film is deposited on a polish-grinding surface of side-polished fiber, and the side-polished fiber is manufactured by removing part of cladding and fiber core from optical fiber through polish-grinding. The manufacturing method is simple, cost is low, and the manufactured optical fiber humidity sensor is high in compatibility, sensitive in response, high in linearity and high in repeatability.

Description

technical field [0001] The invention relates to a humidity sensor, in particular to an optical fiber humidity sensor based on tungsten disulfide and a preparation method thereof. Background technique [0002] Humidity is an important physical quantity. Aerospace, power generation and transformation, textile, food, medicine, storage, agriculture and other industries have very strict requirements on humidity. Effective real-time monitoring and control of humidity parameters is a prerequisite for normal production. The ideal humidity sensor can be used in a wide range of temperature and humidity: high measurement accuracy, long life, good stability, fast response, small hysteresis, high sensitivity, good linearity, small temperature coefficient, simple manufacturing process , small size, etc. At present, most humidity sensors are made by utilizing the influence of humidity on resistance or capacitance, so there are deficiencies in anti-electromagnetic interference, anti-corros...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17
CPCG01N21/17
Inventor 罗云瀚关贺元陈超英夏凯唐洁媛张军余健辉卢惠辉陈哲
Owner JINAN UNIVERSITY
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