期刊
IEEE SENSORS JOURNAL
卷 19, 期 15, 页码 6193-6196出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2019.2910227
关键词
Multicore fiber; array multicore fiber; fiber Bragg gratings; supermode
资金
- National Natural Science Foundation of China (NSFC) [61675054, 91750107, 61875044]
- Natural Science Foundation of Heilongjiang Province in China [ZD2018015]
- 111 Project to the Harbin Engineering University [B13015]
- Fundamental Research Funds for Harbin Engineering University of China [HEUCFG201715]
A novel heterogeneous double period array multicore fiber (DPAMCF) is proposed, in which the spacing between two adjacent cores is approximately equal and the core sizes change periodically. The modes in the DPAMCF form two supermode groups, which can be attributed to double period distribution of heterogeneous cores. Two supermode groups are phase mismatched and the coupling crosstalk between them is suppressed. Fiber Bragg gratings (FBGs) are successfully inscribed in the DPAMCF and the responses of each grating to the axial strain and temperature are measured. The proposed DPAMCF offers a platform to integrate a series of FBG units with two sets of different Bragg wavelengths into a plane at the same longitudinal position.
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