We demonstrate the multiparametric monitoring of directional bending, torsion, and temperature based on helical long-period gratings (HLPGs) in a triangular four-core fiber (FCF) using CO 2 laser i…
Distributed fiber-optic sensing system has been employed for temperature and strain measurement in health monitoring of various structures, and current systems are mainly designed for static-only o…
Optical frequency domain reflectometry (OFDR) is an attractive locating technology for distributed acoustic sensor (DAS) due to its high spatial resolution, but the detectable bandwidth of vibratio…
Silicon photonic sensors have formed a favorable platform for various sensing applications due to the great advantages of high-performance, compactness, and large-scale integration capability. Howe…
Polarization and mode division multiplexing are powerful tools for large-capacity parallel optical communications. Dual-polarization and mode-division multiplexed silicon photonic integrated circui…
A centimeter-level spatial resolution distributed temperature sensor (DTS) based on polarization-sensitive optical frequency domain reflectometry (OFDR) is proposed. Polarization-maintaining fiber …
Fiber-optic distributed acoustic sensor (DAS) is one of the most attractive and promising fiber-optic sensing technologies in the recent decade. It can simultaneously detect and retrieve multiple v…
The interrogation technology plays a key role in high resolution fiber grating sensors. Due to the high sensitivity and quick response, the Pound-Drever-Hall (PDH) technique is one of the most succ…
Rayleigh speckle with random jagged pattern resulting from the interference of Rayleigh backscattering lightwave in a single-mode fiber contains the wavelength information of the incident lightwave…