Miniature fiber-optic sensor based on Si microresonator for absolute temperature measurements

Volkov, P.; Semikov, Daniil; Goryunov, A. V.; Luk’yanov, A. Yu.; Tertyshnik, A. D.; Vopilkin, E. A.; Krayev, Stanislav

doi:10.1016/j.sna.2020.112385

Cited by 9 publications

(8 citation statements)

References 19 publications

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“…The development of OFS has expanded in recent years, favoring advances in different areas such as telecommunications [17,18], materials chemistry [19,20], microelectronics [21][22][23], and nanotechnology [24][25][26]. Focusing on the area of chemistry, most of the existing OFS are based on transduction principles such as fluorescence [27][28][29][30] or absorbance [31,32].…”

Section: Fundamentalsmentioning

confidence: 99%

“…They have several advantages, since they are chemically inert and resistant to thermal, photochemical, and biodegradation [20]. Moreover, OIH materials enable the incorporation of different components that introduce complementary functions to the material such as UV protection [21], anti-reflection [22], moisture resistance [23,24], corrosion inhibition [25], and adhesion protection [26]. Sol-gel is one of the most effective synthetic methods to produce OIH materials using organic solvents at mild temperatures [19,27].…”

Section: Introductionmentioning

confidence: 99%

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Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

et al. 2021

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The use of advanced sensing devices for concrete and reinforced concrete structures (RCS) is considered a rational approach for the assessment of repair options and scheduling of inspection and maintenance strategies. The immediate benefits are cost reduction and a reliable prevention of unpredictable events. The use of optical fiber sensors (OFS) for such purposes has increased considerably in the last few years due to their intrinsic advantages. In most of the OFS, the chemical transducer consists of immobilized chemical reagents placed in the sensing region of the optical sensor by direct deposition or by encapsulation in a polymeric matrix. The choice of the support matrix impacts directly on the performance of the OFS. In the last two decades, the development of OFS functionalized with organic–inorganic hybrid (OIH) sol–gel membranes have been reported. Sol–gel route is considered a simple method that offers several advantages when compared to traditional synthesis processes, allowing to obtain versatile materials with unique chemical and physical properties, and is particularly valuable in the design of OIH materials. This review will provide an update of the current state-of-the-art of the OFS based on OIH sol-gel materials for concrete and RCS since 2016 until mid-2021. The main achievements in the synthesis of OIH membranes for deposition on OFS will be discussed. The challenges and future directions in this field will also be considered, as well as the main limitations of OFS for RCS monitoring.

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Section: Fundamentalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

et al. 2021

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“…[ 14 , 15 , 16 , 17 ]. The working principle of such sensors is based on the change in the optical path difference of the optical waves in the FOS under an external influence, for example, the temperature dependence of the index of refraction [ 18 , 19 ], the membrane shift for pressure and vibrations [ 20 ], and so on.…”

Section: Introductionmentioning

confidence: 99%

Low-Coherence Homodyne Interferometer for Sub-Megahertz Fiber Optic Sensor Readout

Volkov,

Lukyanov,

Goryunov

et al. 2024

Sensors

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This study proposes a method for interferometric fiber optic sensor readouts. The method utilizes the advantages of the active homodyne demodulation technique and low-coherence interferometry. The usage of the tandem low-coherence interferometer enables modulating the reference interferometer without any changes to the sensor. This achieves high sensitivity, high stability, and a wide frequency band. A sensitivity of up to 0.1 nm (RMS) in the frequency range of 5 kHz is demonstrated by detecting acoustic signals with a fiber Michelson interferometer as a sensor.

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“…[ 16 , 17 , 18 , 19 ]. The working principle of such sensors is based on the change of their optical length at external influence, for example in temperature sensors, the temperature dependence of the index of refraction [ 20 ] and in pressure and vibration sensors, the membrane shift [ 21 , 22 ]. This change is detected further by means of the optical system of registration.…”

Section: Introductionmentioning

confidence: 99%

“…However, in this case, the sensitive element should be placed directly inside the interferometer that strongly complicates the multiplexing and monitoring of remote objects. Another technique for resonator length control is so-called tandem low-coherent interferometry (TLCI) [ 19 , 22 , 29 ]. This method has high precision and stability of measurements, but has rather low speed.…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic Impact Location System Based on a Tracking Tandem Low-Coherence Interferometer

Volkov

Luk’yanov

Goryunov

et al. 2023

Sensors

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This study proposes a method for detecting small-length fluctuations for fiber-optic sensors (FOS). The method is based on a tracking tandem low-coherence interferometer and enables the ability to compensate for temperature and deformation drifts in FOS. As a result, the constant high sensitivity of FOS over a wide frequency range is guaranteed. Sensitivity to the level of 2 nm in the frequency range of 200 kHz has been demonstrated. The operation of the circuit is demonstrated on the example of the 2D location of acoustic signals using a correlation algorithm for signal processing, known as the time reversal method. It is shown that this system enables us to determine the place of the impact on the sample under the test with an accuracy of about 2 cm using a single sensor.

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Miniature fiber-optic sensor based on Si microresonator for absolute temperature measurements

Cited by 9 publications

References 19 publications

Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

Low-Coherence Homodyne Interferometer for Sub-Megahertz Fiber Optic Sensor Readout

Fiber Optic Impact Location System Based on a Tracking Tandem Low-Coherence Interferometer

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