Highly sensitive balloon-like fiber interferometer based on GO nanomaterial coated for humidity measurement

Ding, Xin; Yan, Jingci; Chen, Nan; Jin, Tao; Zhang, Rongfu

doi:10.1016/j.optlastec.2022.108798

Cited by 19 publications

(6 citation statements)

References 43 publications

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“…When the energy of

and

is equal, the fiber optic interference structure has the highest contrast. The relationship between the bending radius and the resonance depth of the resonant peak has been detailed and explained in our previously published paper [ 37 , 38 , 39 ]. In Figure 3 , we present a comparison of the transmission spectra of the balloon-like structure before and after filling with ethanol.…”

Section: Sensor Fabrication Methods and Experimental Setupmentioning

confidence: 99%

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Ding,

Lin,

Liu

et al. 2024

Sensors

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A highly sensitivity balloon-like fiber interferometer based on ethanol coating is presented in this paper. The Mach–Zehnder interferometer is formed by bending a single-mode fiber to a balloon-like structure and nested in the Teflon tube. Then, an ethanol solution was filled into the tube of the balloon-like fiber interferometer by the capillary effect. Due to the high sensitivity of the refractive index (RI) of ethanol solutions to temperature, when the external temperature varies, the optical path difference changes. The change in temperature can be detected by the shift in the interference spectrum. Limited by the size of the balloon-like structure, three kinds of these structures with different sensitive lengths were prepared to select the best parameters. The sensitive lengths were 10, 15 and 20 mm, respectively, and the RI detection performance of each structure in 10~26% NaCl solutions was investigated experimentally. The results show that when the sensitive length is 20 mm, the RI sensitivity of the sensor is the highest, which is 212.88 nm/RIU. Ultimately, the sensitive length filled with ethanol is 20 mm. The experimental results show that the temperature sensitivity of the structure is 1.145 nm/°C in the range of 28.1 °C~35 °C, which is 10.3 times higher than that of an unfilled balloon-like structure (0.111 nm/°C). The system has the advantages of low cost and easy fabrication, which can potentially be used in high-precision temperature monitoring processes.

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“…When the energy of

and

Section: Sensor Fabrication Methods and Experimental Setupmentioning

confidence: 99%

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Ding,

Lin,

Liu

et al. 2024

Sensors

Self Cite

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“…Usually, FBG sensors use only wavelength as the means of detection for a measured parameter, which limits their ability to directly distinguish between different parameters and can easily lead to cross-interference [21,22]. To overcome this problem, researchers have been exploring new approaches and structures, such as the use of multi-grating structures [23][24][25], special fiber structures [26][27][28][29] fiber Fabry-Perot interference [30][31][32][33] structures, polymer coatings [34][35][36][37], and multi-sensor networks [38][39][40] to improve the multiparameter measurement capability and cross-interference resistance of FBG sensors. For example, Fu et al [25] proposed a fiber sensor based on a cascaded long-period fiber grating with a double-clad fiber composite tapered structure.…”

Section: Introductionmentioning

confidence: 99%

Multiparameter measurement depending on the cavity-length differentiation characteristics of a microfiber Fabry–Perot interferometer

Liu,

Ran,

Liu

et al. 2024

Meas. Sci. Technol.

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To solve the cross-sensitivity problem affecting optical fiber sensors and realize multiparameter measurement, a microfiber Fabry–Perot interferometer (MFPI) is proposed and experimentally demonstrated. Simultaneous measurement of two distinct physical parameter (temperature and strain) is realized by monitoring wavelength and reflectivity of MFPI. In the temperature field range of 22-36 ℃, the maximum temperature sensitivity can reach 12 pm/℃. The maximum strain sensitivity is up to 0.8 pm/με in the strain range of 0-800 με. In the simultaneous measurement experiments, the relative errors of temperature and strain were 4.0 % and 0.8%, respectively. Furthermore, the sensing element used in this method was just a single fiber grating sensor without any coating layer, which demonstrated the significant advantage of the proposed method in reducing the complexity and cost of multiparameter measurement.

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“…However, these materials exhibit low-refractive-index changes after adsorbing water molecules and require thick films to achieve a sufficient optical signal response. Consequently, most of these sensors have response times longer than 10 s. Moreover, graphene oxide (GO), as a derivative of 2D material graphene, is drawing extensive research in high-performance fiber RH sensors owing to the small size effect, high surface-area-to-volume ratio, and abundant hydrophilic groups [20][21][22] . The best performances of a GO enabled fiber humidity sensor were 45 ms and 115 ms in response and recovery progress, respectively [11] .…”

Section: Introductionmentioning

confidence: 99%

Towards a fast and stable tachypnea monitor: a C60-Lys enabled optical fiber sensor for humidity tracking in breath progress

Wang,

Gao,

Wang

et al. 2024

中国光学快报

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The pandemic of respiratory diseases enlightened people that monitoring respiration has promising prospects in averting many fatalities by tracking the development of diseases. However, the response speed of current optical fiber sensors is still insufficient to meet the requirements of high-frequency respiratory detection during respiratory failure. Here, a scheme for a fast and stable tachypnea monitor is proposed utilizing a water-soluble C 60 -Lys ion compound as functional material for the tracking of humidity change in the progression of breath. The polarization of C 60 -Lys can be tuned by the ambient relative humidity change, and an apparent refractive index alteration can be detected due to the small size effect. In our experiments, C 60 -Lys is conformally and uniformly deposited on the surface of a tilted fiber Bragg grating (TFBG) to fabricate an ultra-fast-response, high-sensitivity, and long-term stable optical fiber humidity sensor. A relative humidity (RH) detecting sensitivity of 0.080 dB/% RH and the equilibrium response time and recovery time of 1.85 s and 1.58 s are observed, respectively. Also, a linear relation is detected between the resonance intensity of the TFBG and the environment RH. In a practical breath monitoring experiment, the instantaneous response time and recovery time are measured as 40 ms and 41 ms, respectively, during a 1.5 Hz fast breath process. Furthermore, an excellent time stability and high repeatability are exhibited in experiments conducted over a range of 7 days.

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Highly sensitive balloon-like fiber interferometer based on GO nanomaterial coated for humidity measurement

Cited by 19 publications

References 43 publications

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Multiparameter measurement depending on the cavity-length differentiation characteristics of a microfiber Fabry–Perot interferometer

Towards a fast and stable tachypnea monitor: a C60-Lys enabled optical fiber sensor for humidity tracking in breath progress

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