Photonic-crystal-fiber-based temperature-insensitive polarimetric fiber strain sensor with reduced length of sensing fiber

Noh, Tae Kyu; Lee, Sang-Mae; Kim, Eng-Soo; Shin, Bo-Sung; Lee, Yong Wook

doi:10.1109/oecc.2012.6276731

Cited by 1 publication

(2 citation statements)

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“…Therefore, the corresponding requirements for strain change are higher. Compared with the traditional sensor, the optical fiber sensor has the advantages of small volume, lightweight, corrosion resistance, and antielectromagnetic interference [1][2][3][4]. Thus its application is more and more extensive, especially for measurement of temperature [5], strain [6], refractive index [7], and other parameters.…”

Section: Introductionmentioning

confidence: 99%

“…Sun et al [9] fitted the thin-core fiber into a single mode fiber showed a strain sensor, structure with thin-core fiber inserted into a standard single mode fiber, and completed the simultaneous measurement of strain and temperature with the recording sensitivity of 1.83 pm/ to strain and of 72.89 pm/ ∘ C to temperature on the foundation of Mach-Zehnder principle. Moreover, Noh et al [4] applied photonic crystal fiber to a Sagnac birefringence loop and got a sensitivity of 1.91 pm/ . However, all the sensors mentioned above have the problems that the sensitivity is not very high and the simultaneous measurement of the two parameters is cross-sensitive.…”

Section: Introductionmentioning

confidence: 99%

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Temperature Insensitive Strain Sensor with Asymmetrical Cascading Structure Based on Photonic Crystal Fiber in Chemical Corrosion

Yang

et al. 2017

Journal of Sensors

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In this paper, a corroded photonic crystal fiber (PCF) sensor is presented on the basis of core-offset splicing and waist-enlarged fiber taper corroded by hydrofluoric acid (HF). The Mach-Zehnder interference theory is used to analyze the relationship between transmission spectrum and strain. The final results obtained from experiments show that the strain sensor's sensitivity is about −6.57 pm/ and the linearity is 0.99962 within the range of 0∼1000 , while the sensor is corroded by HF for 35 minutes at room temperature. In the temperature range of 20 ∘ C∼80 ∘ C, the sensor's sensitivity to temperature is only 1.63 pm/ ∘ C, which is insensitive to temperature. Because of its advantage compared to traditional optical fiber sensors, this sensor can avert the cross-sensitive problem when temperature and strain are measured together and has some other advantages including easily fabricated, simple structure and accurate sensitivity. It can be used in many fields, such as industrial production, monitoring, and aerospace.

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