High-Speed High-Multiplexing Distributed Temperature Sensor Network Based on Weak-Reflection Fiber Gratings

Yanjun, 张燕君 Zhang; Xiaopeng, 谢晓鹏 Xie; Weihong, 毕卫红 Bi

doi:10.3788/cjl201340.0405006

Cited by 1 publication

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“…In the 10th references article, there are 4 FBGs of 6% reflection multiplexed on a single fiber [10] . In the 11th references article, there are 9 FBGs of 3% reflection multiplexed on a fiber [11] . In the 12th references article, there are 1000 identical FBGs of 0.001% reflection multiplexed on a fiber [12] .…”

Section: Introductionmentioning

confidence: 99%

Distributed Identical Grating Sensing System Oriented to Equipment Intelligent Sense in Cloud Manufacturing

Liu

Bao

Fang

et al. 2015

Advances in Production Management Systems: Innovative Production Management Towards Sustainable Growth

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The intelligent sense of equipment is a key link in cloud manufacturing. Identical fiber Bragg gratings (FBG) have a flexible multiplexing number and are unaffected by the laser's bandwidth. A distributed identical grating system oriented to cloud manufacturing equipment's intelligent sense is developed by combining wavelength tunable laser and broadband laser source in this paper. The system collects the reflect spectroscopy to calculate the center wavelength of each FBG by Gaussian fitting. Some optimization is also done to the Gaussian fitting algorithm to increase the demodulation speed in this paper. In the system, 100 reflective FBGs of only 0.1% reflection with the interval space of 5m are connected to a long fiber. All the central wavelengths and positions of the FBGs can be measured. The results show that the linearity of the center wavelength with temperature is up to 99.8% in range of -10℃ to 60℃.

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Section: Introductionmentioning

confidence: 99%