Robust strain sensor based on multimode interference in single-mode–multimode–single-mode fiber structure
Single-mode–multimode–single-mode (SMS) structure is demonstrated as a strain sensor. The device is fabricated by splicing a section of multimode optical fiber (MMF) in between single-mode fibers (SMFs). The modal interference inside the structure produces a strong resonant transmission notch, which...
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| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
National Institute of Optoelectronics
2018
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/22395/ https://oam-rc.inoe.ro/articles/robust-strain-sensor-based-on-multimode-interference-in-single-modemultimodesingle-mode-fiber-structure/fulltext |
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| Summary: | Single-mode–multimode–single-mode (SMS) structure is demonstrated as a strain sensor. The device is fabricated by splicing a section of multimode optical fiber (MMF) in between single-mode fibers (SMFs). The modal interference inside the structure produces a strong resonant transmission notch, which is sensitive to external perturbation. It was found that the position of the notch changed with strain at sensitivity of 1.3 nm/N. The device introduced here is simple to fabricate, robust and suitable for high temperature operation; hence, it is adequate for diverse sensing applications. |
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