Optical fiber distributed acoustic sensor (DAS) and distributed temperature sensor (DTS) are considerably desirable for many important applications including oil and gas industry. Simultaneous measurements of vibration and temperature will exclude the need for two separate DAS and DTS systems, reduce overall cost, and ensure continuous real-time monitoring of these two important sensing parameters. We here devise a hybrid DAS-DTS system using a few-mode fiber (FMF). Although the system requirements for DAS and DTS are quite different, FMF is considered an ideal compromise to satisfy the requirements of the two systems.

Date Published: 2 March 2020
PDF: 7 pages
Proc. SPIE 11287, Photonic Instrumentation Engineering VII, 112870N (2 March 2020); doi: 10.1117/12.2542689

Published in SPIE Proceedings Vol. 11287:
Photonic Instrumentation Engineering VII
Yakov Soskind; Lynda E. Busse, Editor(s)