학술논문
Vector Bending Sensor Based on Hole-Assisted Three-Core Fiber Mach-Zehnder Interferometer
Document Type
Periodical
Source
IEEE Photonics Technology Letters IEEE Photon. Technol. Lett. Photonics Technology Letters, IEEE. 35(14):757-760 Jul, 2023
Subject
Language
ISSN
1041-1135
1941-0174
1941-0174
Abstract
A vector bending sensor based on hole-assisted three-core fiber (HATCF) Mach-Zehnder interferometer (MZI) is demonstrated. The sensor is composed of multi-mode fiber (MMF) - HATCF - MMF structure embedded between two single-mode fibers (SMFs). The bending curvature and direction can be identified by interrogating the wavelength of the interference peak, and the maximum bending sensitivity of −28.726 nm/ $\text{m}^{-1}$ is obtained at the 220° direction. In addition, the sensor has a temperature sensitivity of 44 pm/°C and is insensitive to the external refractive index (RI).