Highly sensitive displacement sensor based on composite interference established within a balloon-shaped bent multimode fiber structure

Tian, Ke; Farrell, Gerald; Wang, Xianfan; Lewis, Elfed; Wang, Pengfei

doi:10.1364/ao.57.009662

Cited by 27 publications

(9 citation statements)

References 25 publications

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Section: Novel Plasmonic Fiber Structurementioning

confidence: 99%

“…The structure has the advantages of simple preparation method, high sensitivity, and high mechanical strength. Tian et al [ 135 ] proposed a new spherical bending MMF displacement sensor. The spherical bending structure is realized by bending the SMS optical fiber structure into a gas sphere with a section of capillary, and then fixing the structure shape, as shown in Figure 10 F. The SMS structure is formed by splicing the 9.9 cm long MMF with two SMFs to increase the mechanical strength of the structure.…”

Section: Novel Plasmonic Fiber Structurementioning

confidence: 99%

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Novel Optical Fiber-Based Structures for Plasmonics Sensors

et al. 2022

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Optical fiber sensors based on surface plasma technology have many unique advantages in specific applications such as extreme environmental monitoring, physical parameter determination, and biomedical indicators testing. In recent decades, various kinds of fiber probes with special structures were developed according to special processing such as tapering, splicing, etching, fiber balls, grating etc. In this paper, the fabrication technology, characteristics, development status and application scenarios of different special optical fiber structures are briefly reviewed, including common processing equipment. Furthermore, many special novel optical fiber structures reported in recent years are summarized, which have been used in various kinds of plasmonic sensing work. Then, the fiber-plasmonic sensors for practical applications are also introduced and examined in detail. The main aim of this review is to provide guidance and inspiration for researchers to design and fabricate special optical fiber structures, thus facilitating their further research.

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Section: Novel Plasmonic Fiber Structurementioning

confidence: 99%

Section: Novel Plasmonic Fiber Structurementioning

confidence: 99%

Novel Optical Fiber-Based Structures for Plasmonics Sensors

et al. 2022

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“…The SMS fibre structure is a very common fibre heterostructure which relies on MMI as its underling operating principle, and SMS fibre structures have been widely applied in telecommunications [13,14]. In the optical fibre sensing field, SMS fibre structures have also proven to be capable of performing measurements of a wide range of parameters, including temperature [15,16], humidity [17], displacement [18,19], curvature [20], strain [21,22], magnetic field [23] and RI [24][25][26] etc. A disadvantage of a simple SMS structure is that the cladding layer prevents direct access to the evanescent field by the external environment, thus traditional SMS fibre structures have not been used to directly measure external RI variations.…”

Section: Introductionmentioning

confidence: 99%

Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure

et al. 2019

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A temperature-insensitive refractometer based on a refractive index (RI)modulated singlemode-multimode-singlemode (RMSMS) fibre structure is proposed and experimentally demonstrated. In this investigation, a combination of no-core fibre (NCF) and multimode fibre (MMF) regions provides an RI modulation region due to the difference in RI between the NCF and the MMF. In effect, by periodically embedding the NCF within the MMF section of a singlemode-multimode-singlemode (SMS) fibre structure, a long-period grating (LPG) can be effectively introduced in the MMF section, and the excited cladding modes are therefore able to sense surrounding RI variation. The modulation parameters are determined from the numerical simulations, and the experimental results show the maximum RI sensitivity of the fabricated sample is as high as 206.96 nm/RIU. In addition, the proposed RMSMS fibre structure is proven to be unaffected by external temperature variation (in the wavelength domain), which is a very attractive feature in practical sensing applications.

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“…Apart from the simple and straight fibre structure, researchers have used a number of bent optical fibre structures to achieve higher sensitivity. Balloon-shaped fibre structures have been used for sensing displacement, temperature and refractive index [27][28][29]. Similarly, C-shaped, U-shaped and S-shaped fibre structures have been used for sensing refractive index, lead ion (Pb 2+ ) in aqueous medium and magnetic field, respectively [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

S-shaped microfiber based diaphragm supported optical microphone

2019

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We propose and demonstrate a simple and highly sensitive optical microphone based on S-shaped tapered fibre (STF). The short pigtailed end of the STF is attached to the centre of a thin circular nitrile diaphragm. The applied acoustic signal deforms the nitrile diaphragm and due to the affixation, the STF structure gets modified leading to change in the bending angles of the two STF bends. As a consequence, the photodetector output, detecting the reflected light intensity of the STF, varies in accordance with the applied acoustic signal. Various properties of the proposed sensing setup can be easily tailored by changing the diaphragm diameter and thickness, and the shapes and size of the STF. For an optimized configuration, the proposed sensor achieves a sensitivity of 3.07 mV Pa −1 and a minimum detectable pressure of 36.48 mPa Hz −1 . The sensor shows a linear behaviour up to 1300 Hz and the experimental value of its first order natural frequency is

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Highly sensitive displacement sensor based on composite interference established within a balloon-shaped bent multimode fiber structure

Cited by 27 publications

References 25 publications

Novel Optical Fiber-Based Structures for Plasmonics Sensors

Novel Optical Fiber-Based Structures for Plasmonics Sensors

Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure

S-shaped microfiber based diaphragm supported optical microphone

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