[1] Yun Jiang Rao. In-fibre Bragg grating sensors[J]. Meas. Sci. Technol., 1997, 8: 355~375
[2] Rao Yunjiang, Ran Zengling. Recent advances in long-distance FBG sensor system at UESTC[J]. J. Electronic Science and Technology of China, 2006, 4(3): 232~236
[4] Pengchun Peng, Hong Yih Tseng, Cien Chi. Long distance FBG sensor system using a linear-cavity fiber Raman laser scheme[J]. IEEE Photon. Technol. Lett., 2004, 16(2): 575~577
[5] J. H. Lee, Y. G. Han, Y. M. Chang et al.. Raman amplifier based long-distance, remote FBG strain sensor with EDF broadband source recycling residual Raman pump[J]. Electron. Lett., 2004, 40(18): 1106~1107
[6] Yunjiang Rao, Zengling Ran, Rongrui Chen. A long-distance FBG sensor system with high optical SNR based on a tunable fiber ring laser configuration[J]. Opt. Lett., 2006, 31(18): 2684~2686