Compact, compression-free, displaceable, and resealable vacuum feedthrough with built-in strain relief for sensitive components such as optical fibers.
Compact, compression-free, displaceable, and resealable vacuum feedthrough with built-in strain relief for sensitive components such as optical fibers.
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紧凑、无压缩、可移位且可重新密封的真空馈通件，具有内置应力消除装置，适用于光纤等敏感部件。
DOI：
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发表时间：
2014
影响因子：
1.6
通讯作者：
V. Ebert
中科院分区：
文献类型：
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作者：
B. Buchholz;V. Ebert
对于小型光学测量单元的直接光纤耦合，我们开发了一种新的紧凑型真空馈通装置，用于玻璃纤维和其他类似形状的物体，该馈通装置结构紧凑，可在纵向和圆周方向上调节光纤。馈通组件避免了光纤上的压缩或扭转，从而保护了例如，高度易碎的纤维材料。在下文中，我们将对低压和低浓度水蒸气测量的密封性要求进行简要模拟，并将解释一种集成的概念，即可移位和自调节、无压缩、紧凑、超高真空、可重新密封、具有良好应变消除的馈通。馈通已成功地在实验室测试设施和几个提取机载可调谐二极管激光吸收光谱湿度计测试。通过氦气检漏仪测试了此处提供的馈通的泄漏率，并在8周的真空测量活动中进一步量化。泄漏率被确定为0.41 ± 0.04 × 10（-9）hPa l/s，据我们所知，这是第一次对这种馈通的泄漏率进行量化。
For the direct fiber coupling of small optical measurement cells, we developed a new compact vacuum feedthrough for glass fibers and other similarly shaped objects that are compact and that offer the possibility of adjusting the fiber in longitudinal and in circular direction. The feedthrough assembly avoids compression or torsion on the fiber and thus protects, e.g., highly frangible fiber materials. In the following, we will present a brief simulation of the tightness requirements for low-pressure and low-concentration water vapor measurements and we will explain an integrated concept for a displaceable and self-adjustable, compression-free, compact, ultra-high vacuum, resealable feedthrough with good strain relief. The feedthrough has been successfully tested in a laboratory test facility and in several extractive airborne tunable diode laser absorption spectroscopy hygrometers. The leakage rate of the feedthrough presented here was tested via a helium leak searcher and was quantified further in an 8-week vacuum measurement campaign. The leakage rate is determined to be 0.41 ± 0.04 × 10(-9) hPa l/s, which--to our knowledge--is the first time a leakage rate for such a feedthrough has been quantified.