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Application of MZI Symmetrical Structure With Fiber Balls and Seven-Core Fiber in Microdisplacement Measurement 被引量:2
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作者 Hong LI Yanming SONG +1 位作者 Mingli DONG Lianqing ZHU 《Photonic Sensors》 SCIE EI CAS CSCD 2019年第2期97-107,共11页
An optical fiber microdisplacement sensor based on symmetric Mach-Zehnder interferometer (MZI) with a seven-core fiber and two single-mode fiber balls is proposed. The rationality and manufacturing process of the MZI ... An optical fiber microdisplacement sensor based on symmetric Mach-Zehnder interferometer (MZI) with a seven-core fiber and two single-mode fiber balls is proposed. The rationality and manufacturing process of the MZI sensing structure are analyzed. The fabrication mechanism of the Mach-Zehnder sensor by CO2 laser is described in detail. Experimental results show that temperature sensitivities of the two dips are 98.65 pm/℃ and 89.72pm/℃, respectively. The microdisplacement sensitivities are 2017.71 pm/mm and 2457.92 pm/mm, respectively. The simultaneous measurement of temperature and microdisplacement is demonstrated based on the sensitive matrix. The proposed Mach-Zehnder interference sensor exhibits the advantages of compact structure, simple manufacturing process, and high reliability. 展开更多
关键词 microdisplacement Mach-Zehnder interferometer FIBER ball SYMMETRICAL STRUCTURE seven-core FIBER
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A NOVEL INTEGRATED OPTICS MIORODISPLACEMENT SENSOR
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作者 Wang Human (Department of Automatic Control,NUAA 29 Yudao Street,Nanjing 210016,P.R.China) 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 1994年第2期183-188,共6页
A novel fiber optics micredisplacement sensor employing a GRIN rod lens is described. The paper presents the operational principle of this device using a geometric optic approach. According to the theoretical analysis... A novel fiber optics micredisplacement sensor employing a GRIN rod lens is described. The paper presents the operational principle of this device using a geometric optic approach. According to the theoretical analysis, we know how to select the parameters of the GRIN rod lens,fibers and other elements in design. DUe to the novel structure, the displacement sensitivity of this sensor is better than the conventional lateral microdisplacment sensor, by a factor of 2. 展开更多
关键词 FIBER OPTICS DISPLACEMENT SENSOR FIBER OPTIC SENSOR OPTICS measurements microdisplacement transducers.
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Three-dimensional Information Decoupling System Based on PSD and Deviation Correction
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作者 YAN Chao-chao LU Jin YANG Hai-ma 《International English Education Research》 2015年第3期101-107,共7页
Three-dimensional Information Decoupling System Based on PSD were designed based on LabVIEW, in order to achieve precision, timeliness, reliability require-ments of the PSD used in the ATP system of Satellite Earth qu... Three-dimensional Information Decoupling System Based on PSD were designed based on LabVIEW, in order to achieve precision, timeliness, reliability require-ments of the PSD used in the ATP system of Satellite Earth quantum communication. Firstly, the laser light source was driven by a stepper motor to scan on the PSD photosensitive surface, and the voltage value was collected and calculated to get the spot position. Analyzing the cause of nonlinear, a mathematical model was built between the actual value and the measured value by using binary quadratic polynomial method, PSD nonlinear correction function would be got. Then, the object micro displacement and angle offset were measured by combining optical triangulation method, and the error of the measurement results was corrected. Experimental results showed that, after the correction, the measuring deviation could be significantly reduced, the PSD performance calibration requirements was achieved, the efficiency of the system was developed greatly by using LabVIEW. 展开更多
关键词 Position sensitive detector (PSD) Three-dimensional Information Decoupling System Binary quadratic polynomial method microdisplacement measurement Angle Measurement
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