allectra產(chǎn)品應(yīng)用——光科學(xué)
由allectra定制用于英國(guó)鉆石光源的光學(xué)饋通：該組件由1個(gè)sub-d型50針可焊接饋通和2個(gè)單模9µm光纖饋通，大氣端和真空端配有fc/pc接頭。
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在越來(lái)越多的高真空和uhv（超高真空）應(yīng)用中，光纖用于輸出信號(hào)或者將“光”引入真空腔體的位置。
以下3種不同類型的光纖：
階躍指數(shù)光纖：用于通過(guò)光進(jìn)行激發(fā)或傳熱，如光譜學(xué)等應(yīng)用。這類光纖的外徑為400µm或600µm。
漸變折射率光纖：通常是數(shù)據(jù)光纖，優(yōu)點(diǎn)是信號(hào)保持更清晰。
單模光纖：直徑可小至6-9µm，遠(yuǎn)小于光的波長(zhǎng)，可用光路只有1條，信號(hào)保持好。
allectra可提供上述所有類型的真空饋通和配件。
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allectra in light sciencewe have recently manufactured this optical component for diamond light source in the uk. the component features a sub-d 50-way weldable feedthrough and two single mode 9µm core optical fibre feedthroughs with fc/pc connectors on air and vacuum sides.
for an increasing number of high vacuum and uhv applications, optical fibres are used either to get signals out or to bring “l(fā)ight” to the right point into the chamber.the threedifferent 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 fibresare 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.
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