Photonic Sensors, Volume. 6, Issue 4, 333(2016)
Spectra Power and Bandwidth of Fiber Bragg Grating Under Influence of Gradient Strain
The reflective spectrum power and the bandwidth of the fiber Bragg grating (FBG) under gradient strain are researched and experimentally demonstrated. The gradient strain is applied on the FBG, which can induce FBG bandwidth broadening, resulting in the variation of reflective power. Based on the coupled-mode theory and transfer matrix method, the segmental linear relationship between the gradient strain, the reflective power, and the bandwidth is simulated and analyzed, and the influence of the FBG length on the reflective spectrum is analyzed. In the experiment, the strict gradient stain device is designed; the experimental results indicate that the reflective optic power and the bandwidth of the FBG under gradient stain are concerned with the length of the FBG. Experimental results are well consistent with the theoretical analysis, which have important guiding significance in the FBG dynamic sensing.
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Qinpeng LIU, Xueguang QIAO, Zhen’an JIA, Haiwei FU. Spectra Power and Bandwidth of Fiber Bragg Grating Under Influence of Gradient Strain[J]. Photonic Sensors, 2016, 6(4): 333
Category: Regular
Received: Apr. 22, 2016
Accepted: Aug. 18, 2016
Published Online: Oct. 21, 2016
The Author Email: LIU Qinpeng (lqp1977@163.com)