期刊
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
卷 61, 期 6, 页码 1656-1660出版社
WILEY
DOI: 10.1002/mop.31843
关键词
modal interference; optical fiber; PDMS; sensor; temperature
资金
- National Natural Science Foundation of China [61803076]
A fiber optics structure for temperature measurement is presented and demonstrated. This structure is composed of segments of single mode fiber (SMF), no-core fiber (NCF), hollow core fiber (HCF), and cured polydimethylsiloxane (PDMS) which is inserted into the cavity of HCF. Owning to the high thermal expansion coefficient (TEC) and thermo-optic coefficient (TOC) of PDMS, the optical path length and the effective refractive index (RI) all register much larger change, leading to the higher temperature sensitivity of the sensor. Simulation showed similar result with experiment. The temperature sensitivity of 580.6 pm/degrees C is achieved in the range of 28 degrees C to 50 degrees C.
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