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

Yan, Lu; Gui, Zhiguo; Wang, Guanjun; Yongquan, An; Gu, Jin; Zhang, Meiqin; Liu, Xinglin; Wang, Zhibin; Wang, Gao; Jia, Pinggang

doi:10.3390/s17030555

Cited by 48 publications

(21 citation statements)

References 17 publications

(17 reference statements)

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“…Hollow silica microspheres work as multi-mirror Fabry-Perot interferometers, and several physical and chemical sensing applications were proposed in literature [6,25]. The incorporation of hollow microspheres in optical fibers have been proposed through the use of chemical etching [26], catastrophic fuse effect [27], or fusion splicing [28].…”

Section: Interferometric Hollow Microspheresmentioning

confidence: 99%

“…Some years later, the usage of a CO 2 laser was proposed for the formation of a spherical lens at the tip of optical fibers [2]. Since then, several fabrication techniques were proposed for the fabrication of hollow and solid microspheres, such as the use of a femtosecond laser [3] or a fusion splicing machine [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, this kind of structure can also be produced to work as interferometric cavities. For instance, a three-wave interferometer was demonstrated using a hollow-core microsphere on a fiber tip [6]. For an inline configuration, this structure can also behave as a two-wave interferometer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Brief Review of New Fiber Microsphere Geometries

Gomes

Monteiro

Silveira

et al. 2018

Fibers

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A brief review of new fiber microsphere geometries is presented. Simple microspheres working as Fabry-Perot cavities are interrogated in reflection and in transmission. Two microspheres were also spliced together, and subjected to different physical parameters. These structures are an alternative solution for load measurement and, when read in transmission, it is also possible to apply strain. Moreover, the structure is capable of being used under extreme ambient temperatures up to 900 • C. Random signal in cleaved microspheres was demonstrated with the possibility of using it for random laser or sensing applications. All this work was developed at the Centre for Applied Photonics, INESC TEC.

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Section: Interferometric Hollow Microspheresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Brief Review of New Fiber Microsphere Geometries

Gomes

Monteiro

Silveira

et al. 2018

Fibers

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show abstract

“…On the contrary, the fabrication method of single-ended microbubble was far from ideal [14][15][16][17][18]. In 2011, Amy Watkins presented a single-input whispering gallery optical microbubble resonator by heating the tapered tip of a pressurized glass capillary using a CO 2 laser.…”

Section: Introductionmentioning

confidence: 99%

A Single-Ended Ultra-Thin Spherical Microbubble Based on the Improved Critical-State Pressure-Assisted Arc Discharge Method

Guo

Liu

et al. 2019

Coatings

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Hollow core microbubble structures are good candidates for the construction of high performance whispering gallery microresonator and Fabry-Perot (FP) interference devices. In the previous reports, most of interest was just focused on the dual-ended microbubble, but not single-ended microbubble, which could be used for tip sensing or other special areas. The thickness, symmetry and uniformity of the single-ended microbubble in previous reports were far from idealization. Thus, a new ultra-thin single-ended spherical microbubble based on the improved critical-state pressure-assisted arc discharge method was proposed and fabricated firstly in this paper, which was fabricated simply by using a commercial fusion splicer. The improvement to former paper was using weak discharge and releasing pressure gradually during the discharging process. Thus, the negative influence of gravity towards bubble deformation was decreased, and the fabricated microbubble structure had a thin, smooth and uniform surface. By changing the arc discharge parameters and the fiber position, the wall thicknesses of the fabricated microbubble could reach the level of 2 μm or less. The fiber Fabry-Perot (FP) interference technique was also used to analyze the deformation characteristic of microbubble under difference filling pressures. Finding the ends of the microbubbles had a trend of elongation with axial compression when the filling pressure was increasing. Its sensitivity to the inner pressure of microbubble samples was about ~556 nm/MPa, the bubble wall thickness was only of about 2 μm. Besides, a high whispering gallery mode (WGM) quality factor that up to 107 was realized by using this microbubble-based resonator. To explain the upper phenomenon, the microbubble was modeled and simulated with the ANSYS software. Results of this study could be useful for developing new single-ended whispering gallery mode micro-cavity structure, pressure sensors, etc.

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“…Recently, the miniature all-silica fiber optic FP sensors based on microcavity or microbubble have attracted much interest [8][9][10][11][12][13][14][15][16]. Ma et al [17] fabricated a compact FP pressure sensor based on a single-mode fiber (SMF) tip microcavity for high-pressure measurement.…”

Section: Introductionmentioning

confidence: 99%

Miniature All-Silica Microbubble-Based Fiber Optic Fabry-Perot Pressure Sensor with Pressure Leading-In Tube

Zhang

Liu

et al. 2019

Journal of Sensors

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A novel all-silica fiber optic Fabry-Perot (FP) pressure sensor with pressure leading-in tube based on microbubble structure is developed and experimentally demonstrated. The FP cavity is formed by fixing the end face of the single-mode fiber (SMF) parallel to the outer surface of the microbubble, in which the microbubble with a diameter of about 318 μm is constructed at the end of silica hollow tube. When external pressure is transmitted on the inner surface of the microbubble by the pressure leading-in tube, the FP cavity length changes with the diameter of microbubble. Experimental results show that such a sensor has a linear sensitivity of approximately 4.84 nm/MPa at room temperature over the pressure range of 1.1 MPa; the sensor has a very low temperature coefficient of approximately 2 pm/°C from room temperature to 600°C. The sensor has advantages of extremely low temperature coefficient, compact structure, and small size, which has potential applications for measuring pressure in high-temperature environment.

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

Cited by 48 publications

References 17 publications

A Brief Review of New Fiber Microsphere Geometries

A Brief Review of New Fiber Microsphere Geometries

A Single-Ended Ultra-Thin Spherical Microbubble Based on the Improved Critical-State Pressure-Assisted Arc Discharge Method

Miniature All-Silica Microbubble-Based Fiber Optic Fabry-Perot Pressure Sensor with Pressure Leading-In Tube

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