LI Zhi-quan, CAI Lu-lu, GAO Qing, WU Fei. Research on Displacement Measurement Based on Bragg Gratings[J]. Journal of Applied Optics, 2004, 25(6): 26-30.
Citation: LI Zhi-quan, CAI Lu-lu, GAO Qing, WU Fei. Research on Displacement Measurement Based on Bragg Gratings[J]. Journal of Applied Optics, 2004, 25(6): 26-30.

Research on Displacement Measurement Based on Bragg Gratings

  • This paper presents a method of the displacement measurement using the technology of fiber Bragg gratings.After a broadband light source passes through separate Bragg grating,the synthesized light source,which a temperature stabilizer controls the stability of wavelengths,is obtained.The synthesized wavelength is longer than those of conventional light source,so the permitted measured range of path-length is enhanced by several hundred times.the measuring accuracy of the interferometer is improved because of the wavelength accuracy of fiber Bragg gratings.Inaddition,a M-Z interferometer used for high precision displacement measurement proves that this system with simple structure can complete the high-precision measurement.
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