We report on a quantitative quasi-distributed vibration sensing (DVS) system enabled by
phase-sensitive optical frequency domain reflectometry (φ-OFDR), which allows for multiple …

Multi-core fiber (MCF) has attracted increasing attention for application in distributed fiber
sensing owing to its unique properties of independent light transmission in multiple spatial …

Distributed optical fiber acoustic sensing (DAS) is a kind of optical fiber sensing system
based on phase sensitive optical time domain reflection technology (Ф-OTDR). It has the …

We report on an interval-locked dual-frequency phase-sensitive optical frequency-domain
reflectometry relying on a common-reference optical phase-locked loop. With a shared …

A low-complexity multi-subcarrier pulse generation scheme is proposed to suppress the
interference fading in a phase-sensitive optical time-domain reflectometer (Φ-OTDR) based …

摘要我国大型基础设施的建设规模已多年位居世界之首, 分布式光纤传感技术(DOFS)
作为大型基础设施健康状态实时监测最有潜力的技术, 近年来得到了迅速发展. 针对DOFS …

Measurement range, as an important performance metric in distributed fiber-optic sensing, is
inherently limited due to the±π range in most of the phase demodulation based sensing …

Due to the inherent characteristic of coherent fading phenomenon, the performance of
distributed acoustic sensing system will be severely degraded, producing anomalous …

Coherent combination method applied to distributed acoustic sensing over deployed multicore
fiber Page 1 HAL Id: hal-04181576 https://hal.science/hal-04181576 Submitted on 12 Dec …

Presented here is long-range distributed vibration sensing based on internal-modulation
optical frequency domain reflectometry (OFDR). In the proposed system with internal …