AI Article Synopsis
- The study focused on how fiber Bragg grating (FBG) sensors react to extreme temperatures in a vacuum, crucial for space applications.
- The sensors were tested in a liquid nitrogen environment, resulting in a low wavelength shift standard deviation, indicating stable performance over time.
- The findings demonstrate that these metal-packaged FBG sensors can operate accurately (<2% error) and have minimal hysteresis errors (<1%), making them suitable for space measurement needs.
Article Abstract
We investigated the fiber Bragg grating (FBG) thermal response in space vacuum thermal environment. The FBGs were packaged with 6061-T6 aluminum. The liquid nitrogen immersion experiment results show that its wavelength shift standard deviation is 0.76 pm for 217 h. The combination effect of vacuum and cryogenic temperature was studied by thermal cycling process in space environment simulator. The FBG sensors show accuracy better than 2% full scale, and the hysteresis errors are below 1%. It proves that these metal packaged FBG sensors can survive and meet the requirement of space measurement.
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| http://dx.doi.org/10.1063/1.4842295 | DOI Listing |
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