Fiber optic distributed acoustic sensor (DAS) and distributed temperature sensor (DTS) are
considerably important for many applications. Itis challenging to design a hybrid DAS-DTS …

We have proposed and demonstrated a hybrid optical-fiber sensor that enables
simultaneous distributed acoustic sensing (DAS) and distributed temperature sensing (DTS) …

We experimentally investigated the performance of a distributed acoustic sensor (DAS)
designed using a few-mode fiber (FMF), when launching different spatial modes under …

A distributed optical fiber dynamic strain sensor also known as a distributed acoustic sensor
(DAS) based on two-mode fiber is demonstrated. By using φ-OTDR interrogation technique …

Quasi-distributed optic sensing system has been widely used in various applications for its
simple configuration, high sensing resolution, and long sensing range. In large sensing …

We demonstrate a hybrid distributed acoustic and temperature sensor (DATS) using a
commercial off-the-shelf (COTS) distributed feedback (DFB) laser, a single-mode optical …

Advances in opto-electronics and associated signal processing have enabled the
development of Distributed Acoustic and Temperature Sensors. Unlike systems relying on …

We experimentally introduce a normalized differential method to enhance the time domain
signal-to-noise ratio (SNR) of an optical fiber distributed acoustic sensor (DAS). The …

Fiber-distributed optical fiber acoustic sensor (DAS) is generally used in distributed long-
distance acoustic/vibration measurement. Recently, DAS is also used in weak airborne …

We designed and tested a distributed acoustic sensing (DAS) that co-exists with optical
communication over a two-mode fiber (TMF). In particular, we excited both linearly polarized …