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…
An approach of phase-shift transform is proposed and demonstrated to suppress the interference fading in phase sensitive optical time domain reflectometry (Φ-OTDR). The phase-shift transform is ex…
We propose a comb-locked multi-channel transmitter with high-speed VCSELs injection-locked by an optical frequency comb. VCSEL dynamics are analyzed with various injection parameters including numb…
Phase-sensitive optical time domain reflectometry (Φ-OTDR) is often required in many large-scale monitoring applications. However, the frequency response of the system is restricted by the round-t…
Aiming at realizing a long-range and distributed static strain sensing system with nano-strain resolution realized using optical frequency domain reflectometry (OFDR), which is required for many pr…
In this paper, we propose and demonstrate a high-speed Brillouin optical correlation domain analysis (BOCDA) system by exploiting the slope of the Brillouin gain spectrum (BGS). In the slope-assist…