| A Dnal-Mode Bow Tie Optical Fiber Sensor for Measurement of Axial Strain |
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| 作者姓名： | 孙晓明 马铁华 强锡富 马军山 |
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| 作者单位： | Dept. of Precision Instrument，Harbin Institute of Technology，Harbin，150001，China |
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| 摘 要： | An optical fiber strain sensor utilizing the mode-mode interference of LP_(01)~x,andLR_(11)~x,modes in bow tie optical fibers is described.The heterodyne interference caused byfrequency modulation of laser diode(LD) with ramp injection current is used torealize the detection of linear phase.Experimental results show a resolution of about 2%of one fringe corresponding to a strain of 2.9με.m.
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A Dual-Mode Bow Tie Optical Fiber Sensor for Measurement of Axial Strain |
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| SUN Xiaoming,MA Tiehua,QIANG Xifu,MA Junshan.A Dnal-Mode Bow Tie Optical Fiber Sensor for Measurement of Axial Strain[J].Journal of Harbin Institute of Technology,1997(3). |
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| Authors: | SUN Xiaoming MA Tiehua QIANG Xifu MA Junshan |
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| Abstract: | An optical fiber strain sensor utilizing the mode-mode interference of LP01x, and LPJ11x modes in bow tie optical fibers is described. The heterodyne interference caused by frequency modulation of laser diode (LD) with ramp injection current is used to realize the detection of linear phase. Experimental results show a resolution of about 2% of one fringe corresponding to a strain of 2.9m. |
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| Keywords: | Optic fiber sensor strain measurement bow tie optical fiber |
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