期刊
SENSORS AND ACTUATORS A-PHYSICAL
卷 280, 期 -, 页码 139-144出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2018.07.016
关键词
Weakly-coupled multicore fiber; Optical fiber sensor; High-temperature measurement
资金
- National Natural Science Foundation of China [51777150]
A novel high temperature sensor based on weakly-coupled multicore fiber (MCF) is proposed and experimentally demonstrated. The sensor consists of a taper of weakly-coupled MCF sandwiched between two standard single-mode fibers (SMF). The temperature sensing mechanism is investigated theoretically and experimentally. In order to eliminate the effect of residual stress in the sensor and improve the high-temperature sustainability of the sensor, the annealing techniques for the proposed sensor is also investigated. The sensor annealed via the proposed techniques was demonstrated experimentally to be able to measuring temperatures up to 1000 degrees C with sensitivity of similar to 36.8 pm/degrees C. (C) 2018 Elsevier B.V. All rights reserved.
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