Fully distributed fiber-optic temperature sensing using acoustically-induced rocking grating |
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| Authors: | Wang Dorothy Y Wang Yunmiao Gong Jianmin Wang Anbo |
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| Affiliation: | Center for Photonics Technology, Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0111, USA. wyj026@vt.edu |
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| Abstract: | A highly sensitive fully distributed fiber-optic temperature sensing technique is proposed and demonstrated based on a transient and traveling rocking grating. The rocking grating is generated by pulsed acoustic torsional waves propagating along the fiber. The measured temperature sensitivity is 1000?ppm/°C and is experimentally demonstrated mainly due to the temperature dependence of the fiber birefringence. This traveling rocking grating based sensing technique may also serve other fully-distributed sensing applications by using specially designed fibers. |
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