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Allectra产品应用——光科学

由Allectra定制用于英国钻石光源的光学馈通：该组件由1个Sub-D型50针可焊接馈通和2个单模9µm光纤馈通，大气端和真空端配有FC/PC接头。

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在越来越多的高真空和UHV（超高真空）应用中，光纤用于输出信号或者将“光”引入真空腔体的指定位置。

以下3种不同类型的光纤：

• 阶跃指数光纤：用于通过光进行激发或传热，如光谱学等应用。这类光纤的外径为400µm或600µm。

• 渐变折射率光纤：通常是数据光纤，优点是信号保持更清晰。

• 单模光纤：直径可小至6-9µm，远小于光的波长，可用光路只有1条，信号保持好。

  
  

Allectra可提供上述所有类型的真空馈通和配件。

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For an increasing number of High Vacuum and UHV applications, Optical Fibres are used either to get signals out or to bring “light” to the right point into the chamber. The three different types of Optical Fibres below:

• The Step Index Fibres are the thickest Fibres used. They are used for illumination or heat transfer by light and applications such as Spectroscopy. These Fibres have an Outside Diameter of 400 or 600 microns.

• The Graded Index Fibres are typically data fibres. They have the advantage that the signal is kept sharper.

• The best signal fibres are the Single Mode types. By having a very small diameter (6-9µm), which is much smaller than the wavelength of the light, there is only one optical path available and the signal keeps its shape.Both Graded Index and Single Mode have an Outside Diameter of 125 microns.

Allectra offers feedthroughs and components with all three types.