Chentong Sun

Oct 2, 2024 | opg.optica.org | Wensheng Wang |Dan Zhang |Bingbing Zhang |Chentong Sun

A fiber sensor with significantly enhanced temperature and strain sensitivities is proposed. This sensor, which comprises a fiber Sagnac interferometer (FSI) in parallel with an improved fiber modal interferometer (FMI), has been validated in experiments. The FSI consists of a section of polarization-maintaining fiber (PMF) and a ${2}\! \times \!{2}$ 3 dB optical coupler (OC), serving as the sensing interferometer.