2 June 2014 Orientation-recognized rotation measurement using single polarimetric multi-mode tilted fiber grating
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91570N (2014) https://doi.org/10.1117/12.2058466
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
The polarimetric sensing characteristics of multi-mode-fiber based tilted fiber Bragg grating (MMF-TFBG) have been analyzed and experimentally demonstrated. The physical “enlarged” fiber core enables the tilted gratings to excite multi high-order core modes with significantly different polarization dependence and well-defined “comb” profiles which are spectrally separated at different wavelength. Orientation-recognized twist/rotation measurement (-90o to 90o) has been achieved with sensitivity of 0.075 dB/deg by using a cost-effective double-path power detection (power monitoring of two orthogonal-polarimetric odd core-modes, i.e. LP11 and LP12).
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Fu Liu, Tuan Guo, Libin Shang, Zhaochuan Zhang, Fa Du, Bai-Ou Guan, Jacques Albert, "Orientation-recognized rotation measurement using single polarimetric multi-mode tilted fiber grating", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570N (2 June 2014); doi: 10.1117/12.2058466; https://doi.org/10.1117/12.2058466
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