[2] Divise M A et al.. Design and performance of a fiber Bragg grating distributed strain sensor system. Proc. SPIE, 1995, 2446:227～235

[3] Kersy A D et al.. High-resolution fiber-grating based strain sensor with interferometric wavelength-shift detection. Opt. Lett., 1993, 18(1):72～74

[4] Melle S W, Liu K, Measures R M. A passive wavelength demodulation system for guided-wave Bragg grating sensors. IEEE Photonics Technol. Lett., 1992, 4(5):516～518

[8] Davis M A, Kersy A D. All-fiber Bragg grating strain-sensor demodulation technique using a wavelength division coupler. Electronics Lett., 1994, 30(1):75～77

[9] Zhang Q, Brown D A, Kung H et al.. Use of highly overcoupled couplers to detect shifts in Bragg wavelength. Electron. Lett., 1995, 31(6):480～482