scholarly journals Miniature on-fiber extrinsic Fabry-Perot interferometric vibration sensors based on micro-cantilever beam

2019 ◽  
Vol 8 (1) ◽  
pp. 293-298 ◽  
Author(s):  
Weiyi Ma ◽  
Yi Jiang ◽  
Han Zhang ◽  
Liuchao Zhang ◽  
Jie Hu ◽  
...  
Keyword(s):  
Cantilever Beam ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Vibration Sensor ◽  
Fiber Axis ◽  
Vibration Sensors ◽  
Beam Design ◽  
Cantilever Length ◽  
Fabry Perot ◽  
Micro Cantilever

Abstract An on-fiber extrinsic Fabry–Perot interferometric (EFPI) vibration sensor based on micro-cantilever beam is proposed and experimentally demonstrated. The micro-cantilever beam, with a cantilever length of 80μm and a cantilever thickness of 5μm, is created perpendicular to the fiber axis by using the femtosecond laser micro-machining technique. The on-fiber vibration sensor has same diameter with that of the single mode fiber. An acceleration sensitivity of 11.1 mV/g@300 Hz in the range of 0.5-5g is demonstrated experimentally. This on-fiber and micro-cantilever beam design allows for the sensor to be smaller size and higher temperature resistance.

scholarly journals Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

2012 ◽  
Vol 19 (2) ◽  
pp. 64-70 ◽  
Author(s):  
Hisham Kadhum Hisham ◽  
Ahmad Fauzi Abas ◽  
Ghafour Amouzad Mahdiraji ◽  
Mohd Adzir Mahdi ◽  
Ahmad Shukri Muhammad Noor
Keyword(s):  
Signal Intensity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Intensity Modulation ◽  
Laser Source ◽  
Fiber Grating ◽  
Small Signal ◽  
Fabry Perot

Experimental Research of Strain and Temperature Based on EFPI Sensor

2011 ◽  
Vol 130-134 ◽  
pp. 4185-4188
Author(s):  
Xiu Feng Yang ◽  
Chun Yu Zhang ◽  
Zheng Rong Tong
Keyword(s):  
Low Cost ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Good Reliability ◽  
High Repetition ◽  
Sensing Applications ◽  
Fabry Perot ◽  
Wet Chemical ◽  
The Many ◽  
Multi Mode

An extrinsic Fabry-Perot (F-P) interferometric (EFPI) sensor by using simple etching and fusing method is proposed and demonstrated. The cavity is formed by wet chemical etching of multi-mode fiber (MMF) end face in hydrofluoric acid solutions, and then it is fused to the end of a single-mode fiber (SMF) to form an extrinsic F-P structure. The strain and temperature of EFPI sensor are studied experimentally. The experimental results show that the interference wavelength becomes 2.648nm longer while the strain increases from 0N to 637N, and the strain sensitivity is about 0.004nm/N, and linearity is 0.999. The interference wavelength becomes 0.032nm shorter while the temperature increases from 20°C to 100°C. This kind of sensor has the many advantages of easy fabrication, good reliability, high-repetition, small size, low cost and mass-production, which offers great prospect for sensing applications.

scholarly journals A Micro Bubble Structure Based Fabry–Perot Optical Fiber Strain Sensor with High Sensitivity and Low-Cost Characteristics

Sensors ◽  
2017 ◽  
Vol 17 (3) ◽  
pp. 555 ◽  
Author(s):  
Lu Yan ◽  
Zhiguo Gui ◽  
Guanjun Wang ◽  
Yongquan An ◽  
Jinyu Gu ◽  
...  
Keyword(s):  
Low Cost ◽  
Strain Sensor ◽  
Glass Tube ◽  
High Sensitivity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fabry Perot ◽  
Micro Bubble ◽  
Bubble Structure ◽  
Cost Characteristics

A high-sensitivity, low-cost, ultrathin, hollow fiber micro bubble structure was proposed; such a bubble can be used to develop a high-sensitivity strain sensor based on a Fabry–Perot interferometer (FPI). The micro bubble is fabricated at the fiber tip by splicing a glass tube to a single mode fiber (SMF) and then the glass tube is filled with gas in order to expand and form a micro bubble. The sensitivity of the strain sensor with a cavity length of about 155 μm and a bubble wall thickness of about 6 μm was measured to be up to 8.14 pm/μϵ.

scholarly journals Research on a Novel Fabry–Perot Interferometer Model Based on the Ultra-Small Gradient-Index Fiber Probe

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1538 ◽  
Author(s):  
Chi Wang ◽  
Jianmei Sun ◽  
Chenye Yang ◽  
Bin Kuang ◽  
Dong Fang ◽  
...  
Keyword(s):  
Output Voltage ◽  
Experimental System ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Gradient Index ◽  
The Novel ◽  
Fiber Probe ◽  
Model Based ◽  
Fabry Perot ◽  
Working Distance

A novel Fabry–Perot (F–P) interferometer model based on the ultra-small gradient-index (GRIN) fiber probe is investigated. The signal arm of the F–P interferometer is organically combined with the ultra-small GRIN fiber probe to establish the theoretical model of the novel F–P interferometer. An interferometer experimental system for vibration measurements was built to measure the performance of the novel F–P interferometer system. The experimental results show that under the given conditions, the output voltage of the novel interferometer is 3.9 V at the working distance of 0.506 mm, which is significantly higher than the output voltage 0.48 V of the single-mode fiber (SMF) F–P interferometer at this position. In the range of 0.1–2 mm cavity length, the novel interferometer has a higher output voltage than an SMF F–P interferometer. Therefore, the novel F–P interferometer is available for further study of the precise measurement of micro vibrations and displacements in narrow spaces.

A fiber micro-vibration sensor based on single-mode fiber ring laser

2009 ◽  
Vol 7 (1) ◽  
pp. 26-28 ◽  
Author(s):  
甄胜来 Shenglai Zhen ◽  
刘仁柱 Renzhu Liu ◽  
俞本立 Benli ◽  
张静 Jing Zhang ◽  
韩保刚 Baogang Han
Keyword(s):  
Ring Laser ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Vibration Sensor ◽  
Fiber Ring Laser ◽  
Fiber Ring ◽  
Micro Vibration
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