| LI Yuanzheng,LI Yi,MIAO Yinping,WANG Fang,HU Kai,ZHANG Kailiang.Micro-displacement sensor based on an asymmetric wavy multimode fiber interferometer[J].Optoelectronics Letters,2023,(3):134-138 |
| Micro-displacement sensor based on an asymmetric wavy multimode fiber interferometer |
| Author Name | Affiliation | | LI Yuanzheng | Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China | | LI Yi | Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China | | MIAO Yinping | Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China | | WANG Fang | Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China | | HU Kai | Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China | | ZHANG Kailiang | Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China |
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| Abstract: |
| We proposed a compact and tunable multimode interferometer (MMI) based on an asymmetric wavy fiber (AMWF), which has axial offset, off-center taper waist, and micro-length. The fabrication process only contains non-axis pulling processes of single-mode fiber on two close positions. Theoretical qualitative analyses and experiments verify the tunable multimode propagation of the AMWF. Experimental results show a nonlinear wavelength response with increasing axis displacement from 0 to 120 μm. In the range of 0—10 μm, the sensitivity reaches the highest value of ?1.33 nm/μm. Owing to its cost-effective, high-compact and tunable multimode propagation properties, the AMWF provides a promising platform for micro-nano photonic devices and optical sensing applications. |
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