We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
An Ultra-High-Resolution Bending Temperature Decoupled Measurement Sensor Based on a Novel Core Refractive Index-Like Linear Distribution Doped Fiber.
- Authors
Zhang, Yunshan; Zhang, Yulin; Hu, Xiafen; Wu, Dan; Fan, Li; Wang, Zhaokui; Kong, Linxing
- Abstract
A high-resolution and high-sensitivity fiber optic sensor based on the quasi-linear distribution of the core refractive index is designed and fabricated, which enables decouple measurement of bending and of temperature. First, single-mode fiber doped with Al2O3, Y2O3, and P2O5 was drawn through a fiber drawing tower. The fiber grating was engraved on the fiber by a femtosecond laser. Modeling analysis was conducted from quantum theory. Experimental results show that the bending sensitivity of the grating can reach 21.85 dB/m−1, which is larger than the reported sensitivity of similar sensors. In the high temperature range from room temperature to 1000 °C, the temperature sensitivity was 14.1 pm/°C. The doped grating sensor can achieve high temperature measurement without annealing, and it has a distinguished linear response from low temperature to high temperature. The bending resolution can reach 0.0004 m−1, and the temperature resolution can reach 0.007 °C. Two-parameter decoupling measurement can be realized according to the distinctive characteristic trends of the spectrum. What's more, the sensor exhibits excellent stability and a fast response time.
- Subjects
TEMPERATURE measurements; PYROMETRY; OPTICAL fiber detectors; PLASTIC optical fibers; FEMTOSECOND lasers; DETECTORS; REFRACTIVE index; SINGLE-mode optical fibers
- Publication
Sensors (14248220), 2022, Vol 22, Issue 8, pN.PAG
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s22083007