Benefits of Spectral Property Engineering in Distributed Brillouin Fiber Sensing

Sensors

Thomas Schneider¹  Cheng Feng¹ 

[1] THz Photonics Group, Institut für Hochfrequenztechnik, Technische Universität Braunschweig, Schleinitzstr. 22, 38106 Braunschweig, Germany;

关键词: stimulated Brillouin scattering;    distributed fiber sensing;    Brillouin optical time-domain analyzer;    slope-assisted Brillouin optical time-domain analyzer;    spectral property engineering;   

DOI  :  10.3390/s21051881

来源: DOAJ

【 摘 要 】

As one of the most consolidated distributed fiber sensors based on stimulated Brillouin scattering, the Brillouin optical time-domain analyzer (BOTDA) has been developed for decades. Despite the commercial availability and outstanding progresses which has been achieved, the intrinsic Lorentzian gain spectrum restricts the sensing performance from possible further enhancements and hence limits the field of validity of the technique. In this paper, the novel method of engineering the gain spectral properties of the Brillouin scattering and its application on static and dynamic BOTDA sensors will be reviewed. Such a spectral property engineering has not only provided improvements to BOTDA, but also might open a new way to enhance the performance of all kinds of distributed Brillouin fiber sensors.

【 授权许可】

Unknown