High-Sensitivity Displacement Sensor Based on a Bent Fiber Mach–Zehnder Interferometer

Chen, Jinping; Zhou, Jun; Jia, Zhiwei

doi:10.1109/lpt.2013.2285160

Cited by 71 publications

(31 citation statements)

References 25 publications

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“…However, the reliability and stability of the sensor were limited by the fluctuation of the light source and in fluences of environment. Chen et al [17] proposed a high-sensitivity fiber-optic displacement sensor fabricated by concatenating two core-offset joints with a separation length of 13 mm using a commercial fusion splicer. The displacement sensitivities obtained were up to 0.835 nm/µm and 0.227 nm/µm in the ranges of 350 µm to 1000 µm, respectively.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating

Chen

Liu

et al. 2015

Photonic Sens

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An optical fiber displacement sensor with a large measuring range for simultaneous displacement and temperature measurement is presented in this paper. We developed a specific transducer based on the piston and hydraumatic structure to realize a large displacement measurement, which combined the large measuring range and high precision into a single sensor system. The spectrum showed two reflection peaks used to compensate for cross-sensitivity in the displacement detection. This displacement sensor can linearly work in a large measuring displacement range greater than 45 mm with a high sensitivity of 0.036 nm/mm. The sensor we reported can be developed for real-time displacement monitoring in many industrial environments such as the mechanical shape or liquid level monitoring.

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Section: Experiments and Discussionmentioning

confidence: 99%

Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating

Chen

Liu

et al. 2015

Photonic Sens

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“…The sensor was reported with high RI sensitivity of 1.24 × 10 −4 /RIU and 8.35 × 10 −5 /RIU at RI of 1.3350 and 1.3845. Displacement and curvature measurements were also achieved by the mismatched microstructures made by offset splicing as reported in [274,275]. Also, the offset spliced structure could be modified by replacing the SMF with other fibers.…”

Section: Mode Mismatched Micro-structured Devicesmentioning

confidence: 99%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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Recent developments in fiber-optic sensing have involved booming research in the design and manufacturing of novel micro-structured optical fiber devices. From the conventional tapered fiber architectures to the novel micro-machined devices by advanced laser systems, thousands of micro-structured fiber-optic sensors have been proposed and fabricated for applications in measuring temperature, strain, refractive index (RI), electric current, displacement, bending, acceleration, force, rotation, acoustic, and magnetic field. The renowned and unparalleled merits of sensors-based micro-machined optical fibers including small footprint, light weight, immunity to electromagnetic interferences, durability to harsh environment, capability of remote control, and flexibility of directly embedding into the structured system have placed them in highly demand for practical use in diverse industries. With the rapid advancement in micro-technology, micro-structured fiber sensors have benefitted from the trends of possessing high performance, versatilities and spatial miniaturization. Here, we comprehensively review the recent progress in the micro-structured fiber-optic sensors with a variety of architectures regarding their fabrications, waveguide properties and sensing applications.

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“…In addition, it also had been extensively studied in various physical and chemical sensing applications, such as temperature [1], displacement [2,3], curvature [4][5][6][7], stress [8,9], vibration [10], refractive index (RI) [1,11], etc. One method to realize an all-fiber MZI was using specialty fibers splicing structure, such as Single-mode-Multimode-Single-mode fiber (SMS) structure [8], SMF-small-core SMF(SCSMF)-SMF structure [12], SMF-doublecore fiber-SMF structure [3,10], SMF-PCF-SMF structure [13][14][15], SMF-HC-PCF-SMF structure [16], SMF-FBG-SMF structure [17], etc. And the other method was changing the structure of the fiber, for example, Zhao Bingtian, et al proposed new methods for producing all-fiber interferometer in which the interference occurred between the core mode and cladding modes, which was excited by splicing a section of SMF between two SMFs with a slight coreoffset or tapering the single mode fiber twice [9].…”

Section: Introductionmentioning

confidence: 99%

Mach–Zehnder interferometer formed by a large core-offset splicing fiber for temperature and displacement measurement

Zhao

Cai

2015

Optics Communications

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High-Sensitivity Displacement Sensor Based on a Bent Fiber Mach–Zehnder Interferometer

Cited by 71 publications

References 25 publications

Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating

Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating

Recent Developments in Micro-Structured Fiber Optic Sensors

Mach–Zehnder interferometer formed by a large core-offset splicing fiber for temperature and displacement measurement

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