Fiber Bragg Gratings in Healthcare Applications: A Review

Mishra, Manish; Sahu, P. K.

doi:10.1080/02564602.2022.2069608

Cited by 13 publications

(5 citation statements)

References 105 publications

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“…FBG sensors utilize the phenomenon of Bragg reflection to measure various physical variables such as strain, temperature, pressure, and acceleration [ 143 , 144 ]. They are widely used in industries such as aerospace, civil engineering, oil and gas, and structural health monitoring [ 145 ].…”

Section: Most Widely Employed Optical Fibre Configurations In Sensing...mentioning

confidence: 99%

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Khonina,

Kazanskiy,

Butt

2023

Biosensors

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Optical fibre sensors are an essential subset of optical fibre technology, designed specifically for sensing and measuring several physical parameters. These sensors offer unique advantages over traditional sensors, making them gradually more valuable in a wide range of applications. They can detect extremely small variations in the physical parameters they are designed to measure, such as analytes in the case of biosensing. This high sensitivity allows them to detect subtle variations in temperature, pressure, strain, the refractive index of analytes, vibration, and other environmental factors with exceptional accuracy. Moreover, these sensors enable remote sensing capabilities. Since light signals are used to carry information, the sensing elements can be placed at distant or inaccessible sites and still communicate the data back to the central monitoring system without signal degradation. In recent times, different attractive configurations and approaches have been proposed to enhance the sensitivity of the optical fibre-based sensor and are briefly explained in this review. However, we believe that the choice of optical fibre sensor configuration should be designated based on the specific application. As these sensors continue to evolve and improve, they will play an increasingly vital role in critical monitoring and control applications across various industries.

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Section: Most Widely Employed Optical Fibre Configurations In Sensing...mentioning

confidence: 99%

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Khonina,

Kazanskiy,

Butt

2023

Biosensors

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“…In biomedical analysis, especially, FBGs have shown a prominent resolve regarding their reliability, ruggedness, and operation versatility. Various works were reported regarding cardiorespiratory analysis, gait analysis, prosthetics, and wearable sensors belonging to the striking subfield fields of biomedical research [19][20][21][22]. Considering works related to the application of optical sensors and FBG in plantar pressure and gait monitoring, several works have been reported in the past.…”

Section: Introductionmentioning

confidence: 99%

“…where n eff is the effective refractive index, L is the period of the index, α and η are the thermal coefficients, DT is the temperature change, r e is the photoelastic coefficient, and e z is the strain applied [20]. As explained before, in the present work, arrays (each array has two FBGs) are utilized for acquiring the data.…”

Section: Introductionmentioning

confidence: 99%

Design of an enhanced spatial resolution indoor plantar strain and gait analysis setup for biomedical applications

Mishra,

Sahu,

Datta

2024

Eng. Res. Express

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In the recent years, measurement of plantar strain and gait analysis has gained huge attention and plays a pivotal role in monitoring posture related ailments or Diabetic Foot Ulcer (DFU). Fibre Bragg Grating Arrays (closely spaced FBGs), another category of optical sensors, are employed in this study to understand the strain and gait of human foot. These arrays offer critical advantages such as enhanced sensitivity, data acquisition, multiplexing abilities, and sensor location effect compensation. For experimentation, five arrays were distributed among different regions (Upper, Medial, and Heel) of foot and their strain patterns for six volunteers (three male and three female) were recorded for eighty seconds. The data was analysed in two ways, Combined (data of array sensors were averaged to target the whole area) and Individual (for independent analysis of each sensor in array). Incoherent transitions and strain patterns of FBGs within the same arrays observed in individual analysis, explains enhanced resolution capabilities of the arrays. Strain mapping of sensor behaviour also confirmed the identification of various forms of gait i.e., Heel Strike, Flat Foot, Heel Off, and Zero Contact. The average standard deviation values for the arrays was reported below 0.16.

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“…S INCE their discovery, the exploitation of fiber Bragg grating (FBG) sensors burst in a variety of fields and are nowadays widely leveraged in medical and biomedical applications [1], [2], [3], [4]. Their popularity is driven by a number of distinctive features such as their biological compatibility, nontoxicity, reduced size, inherent safety, electromagnetic disturbance immunity, and capacity for multiplexing [5].…”

Section: Introductionmentioning

confidence: 99%