Autor: |
Shuai Gao, Yan-Nan Tan, Li-Peng Sun, Tuan Guo, Bai-Ou Guan, Jacques Albert, Yang Ran |
Rok vydání: |
2012 |
Předmět: |
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Zdroj: |
SPIE Proceedings. |
ISSN: |
0277-786X |
Popis: |
Orientation-recognized two-dimensional vibration sensor based on a polarization-controlled cladding-to-core recoupling is demonstrated experimentally. A compact structure in which a short section of multi-mode fiber stub containing a weakly tilted fiber Bragg grating (TFBG) is spliced to another single-mode fiber without any lateral offset. Several well defined lower-order cladding resonances in reflection show different polarization dependence due to the tilted grating vector excitation. Both orientation and amplitude of the vibration can be determined unambiguously via dual-path power detection of the orthogonal-polarimetric odd-cladding-modes. Meanwhile, the unwanted power fluctuations and temperature perturbations can be definitely removed via core mode monitoring. |
Databáze: |
OpenAIRE |
Externí odkaz: |
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