Advanced SearchSearch Tips
Gas-Flow Sensor using Optical Fiber Bragg Grating(FBG)
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Gas-Flow Sensor using Optical Fiber Bragg Grating(FBG)
Shim, Joon-Hwan; Cho, Seok-Je; Yu, Yung-Ho; Sohn, Kyung-Rak;
  PDF(new window)
We have proposed and demonstrated an gas-flow sensor using optical fiber bragg grating(FEG). The flow sensor has no electronics and no mechanical parts in its sensing part and the structure is th11s simple and immune to electromagnetic interference(EMI). The FEG sensor was consisted qf the sensing element and a coil heater. The metal coil was used to supply the current to the FEG. While some currents supply to the coil, the refractive index of the FEG under the coil is changed and thus the wavelength shift of fiber optic sensor was induced In this work, the wavelength shift according to flow-rate was experimentally studied and was used to evaluate the gas flow-rate in a gas tube. As a result, it was possible to measure the flow-rate in a linear range from 5 to with a resolution of approximately at the applied currents of 100 mA and 120 mA. The measured sensitivities were for 100 mA and for 120 mA.
Gas flow sensors;Flow sensors;Optical fiber sensors;Fiber bragg grating;
 Cited by
Hung, S. T., Wong, S. C., and Fang, W.(2000), "The development and application of microthermal sensors with mesh-membrane supporting structure," Sensors and Actuators A, Vol. 84, pp. 70-75 crossref(new window)

Kaltsas, G., Nassiopoulos, A. A. and Nassiopoulou, A. G. "Characterization of a silicon thermal gas-flow sensor with porous silicon thermal isolation," IEEE Sensors J., Vol. 2, No. 5, pp. 463-475, Oct. 2002 crossref(new window)

Lin, G. C., Wang, L., Yang, C. C., Shih, M. C. and Chuang, T. J.(1998), "Thermal performance of metal-clad fiber Bragg grating sensors," IEEE Photon. Technol. Lett., vol. 10, no. 3, pp. 406-408 crossref(new window)

Lim, J., Yang, Q. P., Jones, B. E., and Jackson, P. R.(2001), "DP flow sensor using optical fiber grating," Sensors and Actuators A, Vol. 92, pp. 102-108 crossref(new window)

Nemoto, T., Hashimoto, Y., Sato, S. and Iitaka, H.(1998), "An optical fiber flow speed sensor of increased sensitivity," Elect. Eng. Jpn., pp. 1-8

Oda, S., Anzai, M., Uematsu, S., and Watanabe, K.(2003), "A silicon micromachined flow sensor using thermopiles for heat transfer measurements," IEEE Trans. Instrum. Meas., Vol. 52, No. 4, pp. 1155-1159 crossref(new window)

Okamoto, K., Ohhashi, T., Asakura, M., and Watanabe, K.(1994), "A digital anemometer," IEEE Trans. Instrum Meas., vol. 43, no. 2, pp. 116-120 crossref(new window)

Shyu, C. T. and Wang, L.(1994), "Sensitive linear electric current measurement using two metal-coated singlemode optical fibers," J. Lightwave Technol., Vol. 12, No. 11, pp. 2040-2048 crossref(new window)

Svedin, N., Kalvesten, E., and Stemme, G.(2003), "A new edge-detected life force flow sensor," J. Microelectromech. Syst., Vol. 12, pp. 344-354 crossref(new window)

Wu, J. and Sansen, W.(2002), "Electrochemical time of flight flow sensor," Sensors and Actuators A, Vol. 97-98, pp. 68-74 crossref(new window)