Multiparameter POF Sensing Based on Multimode Interference and Fiber Bragg Grating

Oliveira, Ricardo; Marques, Thiago H. R.; Bilro, Lúcia; Nogueira, Rogério N.; Cordeiro, Cristiano M. B.

doi:10.1109/jlt.2016.2626793

Cited by 38 publications

(18 citation statements)

References 27 publications

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“…To solve the cross-sensitivity issue of single-parameter sensing, multi-parameter fiber sensors have attracted the attention of many researchers. Recently, various sensing structures have been reported to achieve the simultaneous measurement of strain and temperature, such as: fiber Bragg gratings (FBGs) [5], long period gratings fabricated by CO 2 laser [6], FBGs combined with four-core fiber [7], various fiber in-line Mach-Zehnder interferometers (MZIs) based on multimode fiber (MMF) [8] or plastic optical fiber [9], photonic crystal fiber (PCF) [10] or few-mode fiber [11], cascaded dual-pass MZIs with Sagnac interferometers [12], partially filled dual-core PCF [13] or selectively infiltrated PCF [14], dual-core As 2 Se 3 -PMMA (polymethyl methacrylate) tapers [15], and other structures [16,17,18,19]. Among them, fiber in-line MZIs have aroused great interest owing to their advantages of small size, simplicity of fabrication, and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology

Dong

Sun

et al. 2018

Materials

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We demonstrated a fiber in-line Mach-Zehnder interferometer (MZI) coated with platinum (Pt) for the simultaneous measurement of strain and temperature. The sensor was fabricated by splicing a section of multimode fiber (MMF) between two single mode fibers (SMFs) and the Pt coating was prepared by iron sputtering technology. Fine interference fringes of over 20 dB with a compact size of 20 mm were achieved. The experimental results of the two different resonant dips showed strain sensitivities of −2.06 pm/με and −2.21 pm/με, as well as temperature sensitivities of 55.2 pm/°C and 53.4 pm/°C, respectively. Furthermore, it was found that the Pt coating can improve the strain sensitivity significantly, resulting in an increase of about 54.5%. In addition, the sensor has advantages of easy fabrication, low cost, and high sensitivity, showing great potential for the dual-parameter sensing of strain and temperature.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology

Dong

Sun

et al. 2018

Materials

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“…The strain sensitivity was about 1.7 pm/με, which was slightly smaller than that of our proposed MZI, but it has a big advantage of its capability to high temperatures up to 1000 °C as well as larger measurement range up to 3800 με. In addition, it is worth mentioning that the polymer fibers are more suitable for strain sensing applications because of the larger elasticity than silica fiber and lower Young’s modulus [ 25 , 26 , 27 ]. At the same time, different polymer fibers with polycarbonate [ 25 ] and Zeonex-PMMA [ 28 ] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Strain Sensor Based on a Novel Mach-Zehnder Interferometer with TCF-PCF Structure

Dong

Luo

et al. 2018

Sensors

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A highly sensitive strain sensor based on a novel fiber in line Mach-Zehnder interferometer (MZI) was demonstrated experimentally. The MZI was realized by splicing a section of photonic crystal fiber (PCF) with the same length of thin core fiber (TCF) between two single mode fibers (SMFs). The fringe visibility of MZI can reach as high as 20 dB in air. In particular, the strain sensitivity of −1.95 pm/με was achieved within a range from 0 to 4000 με. Furthermore, the strain properties of different length of MZI was investigated. It was found that the sensitivity was weekly dependent on the length of MZI. The strain sensitivities corresponding to the MZI with 35 mm PCF, 40 mm PCF and 45 mm PCF at 1550 nm band were −1.78 pm/με, −1.73 pm/με and −1.63 pm/με, respectively. Additionally, the sensor has advantages of simple fabrication, compact size and high sensitivity as well as good fringe visibility.

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“…By exploiting these advantages, numerous kinds of POF sensors have been developed for the past several decades. They are, for instance, based on short and long period gratings [7,8], interferometry [9], Brillouin scattering [10], and intensity variations [11].…”

mentioning

confidence: 99%

Design and characterization of a curvature sensor using fused polymer optical fibers

et al. 2018

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This Letter demonstrates the application of polymer optical fibers (POFs) damaged by the fiber fuse effect to curvature sensing and dynamic angular monitoring. The curvature sensing performance using the fused-POF is compared to POF without the fuse effect. Both POFs are submitted to angles of up to 90 deg in flexion/extension cycles with angular velocities ranging from 0.48 rad/s to 5.61 rad/s. The fused POF is found to show higher performance with respect to sensitivity, correlation coefficient with linear regression, and hysteresis. For instance, at the angular velocity of 0.48 rad/s, the fused POF shows >3 times higher sensitivity and significantly lower hysteresis than those of the non-fused POF. In addition, the fused POFs have lower cross-sensitivity and hysteresis variations on the tests with different angular velocities. These results indicate that the fused POFs are potential candidates to develop curvature sensors with various advantages over non-fused POFs, for applications such as gait analysis and wearable robotics.

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Multiparameter POF Sensing Based on Multimode Interference and Fiber Bragg Grating

Cited by 38 publications

References 27 publications

Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology

Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology

Highly Sensitive Strain Sensor Based on a Novel Mach-Zehnder Interferometer with TCF-PCF Structure

Design and characterization of a curvature sensor using fused polymer optical fibers

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