Distributed pH sensing based on hydrogel coated single mode fibers and optical frequency domain reflectometry

G Yin, H Xiao, H Zhou, T Zhu - Optics Express, 2022 - opg.optica.org
We propose a distributed pH sensor based on an optical frequency domain reflectometry
using a PEGDA-based pH-sensitive hydrogel coated on a single mode fiber. The volume of …

Dispersion-induced Delay Deviation and its Influence on Distributed Strain Measurement using OFDR

T Lv, D Shu, Y Zhang, DP Zhou, W Peng… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
The broad wavelength tuning range in optical frequency-domain reflectometry (OFDR)
enables high-spatial-resolution distributed strain sensing. The large wavelength tuning …

Metallic coating enabled optical fiber sensor for distributed corrosion monitoring

RF Wright, NA Diemler, JC Egbu… - Fiber Optic Sensors …, 2021 - spiedigitallibrary.org
It is important to monitor and locate internal corrosion along natural gas pipelines to prevent
methane leaks and catastrophic failures. Corrosion proxy materials enable optical fiber …

Distributed pH sensing based on optical frequency domain reflectometry

H Xiao, H Lu, Z Zhang, G Yin… - … Conference on Optical …, 2022 - spiedigitallibrary.org
A distributed pH sensor was proposed by using the optical frequency domain reflectometry
and a hydrogel coated single mode fiber (SMF). The swelling of the hydrogel will convert the …