Parallel Double-FPIs Temperature Sensor Based on Suspended-Core Microstructured Optical Fiber

Su, Huaiyin; Zhang, Yundong; Zhao, Yijun; Ma, Kai; Qi, Kaiyue; Guo, Ying; Zhu, Fuxing

doi:10.1109/lpt.2019.2944143

Cited by 21 publications

(8 citation statements)

References 26 publications

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“…In terms of applications, the configurations using FPIs were mainly used for temperature [15,16,20,23,25,29,30,32,34,38] and strain sensing. [9,12,18,19,35] Apart from these two applications, others such as magnetic field sensing, [9] gas refractive index, [21,26] and pressure sensing, [17,24] airflow sensing, [22] hydrogen sensing, [14] humidity sensing, [13] volatile organic compounds sensing, [28] and refractive index sensing of liquids [31] were also reported.…”

Section: Fabry-perot Interferometersmentioning

confidence: 99%

“…Followed by this publication, a few more works were published using the parallel configuration. [32][33][34][35][36] The main advantage of the parallel configuration is the possibility of having a reference interferometer without compromising the visibility of the interference signal. The series configuration using two FPIs physically separated, as shown in Figure 4b, may lead to visibility issues due to the presence of an additional interface.…”

Section: Fabry-perot Interferometersmentioning

confidence: 99%

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Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

169

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The optical analog of the Vernier effect applied to fiber interferometers is a recent tool to enhance the sensitivity and resolution of optical fiber sensors. This effect relies on the overlap between the signals of two interferometers with slightly detuned interference frequencies. The Vernier envelope modulation generated at the output spectrum presents magnified sensing capabilities (i.e., magnified wavelength shift) compared to that of the individual sensing interferometers that constitute the system, leading to a new generation of highly sensitive fiber sensing devices. This review analyses the recent advances and developments of the optical Vernier effect from a fiber sensing point-of-view. Initially, the fundamentals of the effect are introduced, followed by an extensive review on the state-of-the-art, presenting all the different configurations and types of fiber sensing interferometers used to introduce the optical Vernier effect. This paper also includes an overview of the complex case of enhanced Vernier effect and the introduction of harmonics to the effect.

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Section: Fabry-perot Interferometersmentioning

confidence: 99%

Section: Fabry-perot Interferometersmentioning

confidence: 99%

Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

169

View full text Add to dashboard Cite

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“…After the publication of this paper, a few more Vernier effect fiber sensors with parallel configurations were reported. By introducing a microsphere air cavity FPI [ 15 , 16 , 17 ], a polydimethylsiloxane (PDMS)-filled air cavity FPI [ 18 , 19 ], a heterogeneous fiber structured FPI [ 20 ] and an open air cavity FPI [ 11 ] in the Vernier-effect-based fiber sensors, the measured sensitivity can significantly be improved, as shown in Table 1 [ 14 , 15 , 16 , 18 , 19 , 20 , 21 ].…”

Section: Configurations To Produce the Vernier Effectmentioning

confidence: 99%

Advanced Fiber Sensors Based on the Vernier Effect

Chen

Zhao

Hao

et al. 2022

Sensors

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For decades, optical fiber interferometers have been extensively studied and applied for their inherent advantages. With the rapid development of science and technology, fiber sensors with higher detection sensitivity are needed on many occasions. As an effective way to improve measurement sensitivity, Vernier effect fiber sensors have drawn great attention during the last decade. Similar to the Vernier caliper, the optical Vernier effect uses one interferometer as a fixed part of the Vernier scale and the other as a sliding part of the Vernier scale. This paper first illustrates the principle of the optical Vernier effect, then different configurations used to produce the Vernier effect are classified and discussed. Finally, the outlook for Vernier effect fiber sensors is presented.

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“…13 In Zhang and colleagues, [14][15][16][17][18][19][20][21][22] the sensors have high sensitivity by two cascaded FPIs forming the Vernier effect. While in Yi and colleagues, [23][24][25][26] the sensors also have high sensitivity by two parallel-connect FPIs forming the Vernier effect. However, the Vernier effect sensor still has the problems of complex manufacturing process, difficult to repeat structure and high cost.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive temperature sensing probe based on two cascaded Fabry–Perot interferometers and Vernier effect

Zhu

Jiang

Chen

et al. 2022

Micro & Optical Tech Letters

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In this paper, a temperature sensing probe is designed using two cascaded Fabry-Perot interferometers (FPIs). FPI1 is made by splicing single-mode optical fiber (SMF)-no-core optical fiber-capillary-SMF in turn, and then drilling a micro-hole on the capillary wall of FPI 1 with femtosecond laser, and injecting dimethyl silicone oil (DSO) into the capillary through the micro-hole with immersion method. FPI 2 is made by splicing SMF-capillary-SMF sequentially. Due to the thermal sensitivity of DSO, the temperature sensitivity of a single FPI 1 reaches −0.3674 nm/°C. When the free spectral ranges of FPI 1 and FPI 2 are close, their cascaded sensor will produce a Vernier effect for improving the sensitivity. The experimental results show that the sensitivity of the sensing probe is as high as 1.8456 nm/°C. In addition, the sensor has a compact structure and can be used flexibly in confined space temperature measurement.

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Parallel Double-FPIs Temperature Sensor Based on Suspended-Core Microstructured Optical Fiber

Cited by 21 publications

References 26 publications

Optical Vernier Effect: Recent Advances and Developments

Optical Vernier Effect: Recent Advances and Developments

Advanced Fiber Sensors Based on the Vernier Effect

Highly sensitive temperature sensing probe based on two cascaded Fabry–Perot interferometers and Vernier effect

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