| DISTRIBUTED OPTIC－FIBER FORCE SENSOR BASED ON MODE COUPLING EFFECTS IN HIGH－BIREFRINGENT FIBER |
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| 作者姓名： | Luo Fei |
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| 作者单位： | Luo Fei (Department of Tests Measurements Engineering，NUAA 29 Yudao Street，Nanjing 210016 P.R.China ) Huang Shanglian (Institute of Opto-Electronic Precision Instruments Chongqing University Chongqing 630044，P.R.China) |
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| 摘 要： | ＤＩＳＴＲＩＢＵＴＥＤＯＰＴＩＣ－ＦＩＢＥＲＦＯＲＣＥＳＥＮＳＯＲＢＡＳＥＤＯＮＭＯＤＥＣＯＵＰＬＩＮＧＥＦＦＥＣＴＳＩＮＨＩＧＨ－ＢＩＲＥＦＲＩＮＧＥＮＴＦＩＢＥＲＬｕｏＦｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＴｅｓｔｓＭｅａｓｕｒｅｍｅｎｔｓＥｎｇｉｎｅ...
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DISTRIBUTED OPTIC-FIBER FORCE SENSOR BASED ON MODE COUPLING EFFECTS IN HIGH-BIREFRINGENT FIBER |
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| Luo Fei.DISTRIBUTED OPTIC-FIBER FORCE SENSOR BASED ON MODE COUPLING EFFECTS IN HIGH-BIREFRINGENT FIBER[J].Transactions of Nanjing University of Aeronautics & Astronautics,1994(1). |
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| Authors: | Luo Fei |
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| Abstract: | An optic-fiber sensor system for measuring distributed forces is presented. The sensor system chooses high-birefringent fiber as sensing e-iement. Based on coupling effects of polarization modes in high-birefringent fiber, the distribution of the force points along the sensing fiber can be measured by detecting mode couplings in the fiber which are caused by external force disturbance. The location and magnitude of the measured forces are determined by a heterodyne interferometry and the technique of optic path scanning. The spatial resolution of the sensor system is better than 0. 15m for a 50m testing fiber. |
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| Keywords: | optical fibers sensors forces mode couplings interferometry |
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