TY - JOUR
T1 - Performance enhancement of Brillouin optical correlation domain analysis based on frequency chirp magnification
AU - Wang, Bin
AU - Fan, Xinyu
AU - Du, Jiangbing
AU - He, Zuyuan
N1 - Publisher Copyright:
© 2017 Chinese Optics Letters.
PY - 2017/12/10
Y1 - 2017/12/10
N2 - We propose a method to enhance the performance of Brillouin optical correlation domain analysis(BOCDA) with a broad chirp span of optical sources based on the frequency chirp magnification technique. In BOCDA systems, the number of effective sensing points is proportional to the chirp span of the light source, which is normally limited by the characteristics of the laser diode. We demonstrate a chirp span of 126 GHz with the proposed method, to double the effective sensing points of BOCDA. By combining with differential measurement schemes, a spatial resolution of <10 cm over a 1 km range is achieved.
AB - We propose a method to enhance the performance of Brillouin optical correlation domain analysis(BOCDA) with a broad chirp span of optical sources based on the frequency chirp magnification technique. In BOCDA systems, the number of effective sensing points is proportional to the chirp span of the light source, which is normally limited by the characteristics of the laser diode. We demonstrate a chirp span of 126 GHz with the proposed method, to double the effective sensing points of BOCDA. By combining with differential measurement schemes, a spatial resolution of <10 cm over a 1 km range is achieved.
UR - http://www.scopus.com/inward/record.url?scp=85043370225&partnerID=8YFLogxK
U2 - 10.3788/COL201715.120601
DO - 10.3788/COL201715.120601
M3 - Article
AN - SCOPUS:85043370225
SN - 1671-7694
VL - 15
JO - Chinese Optics Letters
JF - Chinese Optics Letters
IS - 12
M1 - 120601
ER -