Qiao Xue-Guang, Ding Feng, Jia Zhen-An, Fu Hai-Wei, Ying Xu-Dong, Zhou Rui, Song Juan. High-accuracy quasi-distributed optical fiber Bragg gratingseismic demodulation systemJ. Acta Physica Sinica, 2011, 60(7): 074221. DOI: 10.7498/aps.60.074221