Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement

Flockhart, Gordon M. H.; Cranch, Geoffrey A.; Kirkendall, Clay K.

doi:10.1049/el:20060261

Cited by 15 publications

(6 citation statements)

References 8 publications

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“…Non-twisted four-core MCFs have been also proposed to implement curvature sensors [12][13]. Using this type of fiber and with the aim of achieving the best curvature resolution an interferometric interrogation scheme has been proposed in combination of Fabry-Pérot cavities and FBGs [14,15].…”

Section: Introductionmentioning

confidence: 99%

Multipoint Two-Dimensional Curvature Optical Fiber Sensor Based on a Nontwisted Homogeneous Four-Core Fiber

Barrera

Gasulla

Sales

2015

J. Lightwave Technol.

100

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Abstract-We have implemented a multipoint two-dimensional curvature optical fiber sensors based on a non-twisted homogeneous four-core fiber. A theoretical approach to the mechanical behavior of these fibers under curvature conditions has been developed. Two shape sensors composed of an array of FBGs inscribed in the four-core have been implemented to corroborate the theoretical analysis with experimental results. The proposed shape sensors is characterized showing the ability to measure the curvature radius, the curvature direction and any external force of uniform and non-uniform curvatures with high accuracy.

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Section: Introductionmentioning

confidence: 99%

Multipoint Two-Dimensional Curvature Optical Fiber Sensor Based on a Nontwisted Homogeneous Four-Core Fiber

Barrera

Gasulla

Sales

2015

J. Lightwave Technol.

100

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“…In multi-core optical fiber point sensing, each channel can be used to measure a specific physical parameter at a particular position. By introducing different sensing mechanisms into different channels of the optical fiber, it can be employed to construct Fabry-Perot [48][49][50][51][52][53][54][55], Michelson [56][57][58][59][60], and Mach-Zehnder [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76] interferometers, allowing independent measurements of physical parameters at specific locations. This enables real-time monitoring and perception of changes in physical parameters such as refractive index [56,57], temperature [48,[69][70][71][72][73], bending [51,61,62,77], and strain [50,[63][64][65].…”

Section: Application Of Multi-core Optical Fibers In Sensing Networkmentioning

confidence: 99%

Applications and Development of Multi-Core Optical Fibers

Chen,

Yuan,

Zhang

et al. 2024

Photonics

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The rapid development of information and communication technology has driven the demand for higher data transmission rates. Multi-core optical fiber, with its ability to transmit multiple signals simultaneously, has emerged as a promising solution to meet this demand. Additionally, due to its characteristics such as multi-channel transmission, high integration, spatial flexibility, and versatility, multi-core optical fibers hold vast potential in sensing applications. However, the manufacturing technology of multi-core fiber is still in its early stages, facing challenges such as the design and fabrication of high-quality cores, efficient coupling between cores, and the reduction of crosstalk. In this paper, an overview of the current status and future prospects of multi-core fiber manufacturing technology has been presented, and their limitations will be discussed. Some potential solutions to overcome these challenges will be proposed. Their potential applications in optical fiber sensing will also be summarized.

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“…Substantially more "shape sensing" method patents began to emerge post 2000's. Despite the disappearance of ShapeTape and its commercial failure, basic fibre optic shape sensing appeared again in early 2000 with multicore fibres for high accuracy curvatures sensing using phase and strain changes of FBGs [32,33]. The downside of shape sensing with WDM is the limitation in terms of the number of FBGs that can be utilised, limiting the ability for longer or more flexible object's measurement.…”

Section: Evolution Trendmentioning

confidence: 99%

“…The detection of bends at a multitude of locations through multiplexing provide the opportunity for three dimensional shape sensing. Three or more cores or fibres provides the ability to detect directional strain at a multitude of locations allowing for the reconstruction of a fibre optic cables shape in space [32,33] Distributed fibre optic shape sensing ~2004…”

Section: ~1999mentioning

confidence: 99%

Recent developments in fibre optic shape sensing

et al. 2018

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This paper presents a comprehensive critical review of technologies used in the development of fibre optic shape sensors (FOSSs). Their operation is based on multi-dimensional bend measurements using a series of fibre optic sensors. Optical fibre sensors have experienced tremendous growth from simple bend sensors in 1980s to full three-dimensional FOSSs using multicore fibres in recent years. Following a short review of conventional contact-based shape sensor technologies, the evolution trend and sensing principles of FOSSs are presented. This paper identifies the major optical fibre technologies used for shape sensing and provides an account of the challenges and emerging applications of FOSSs in various industries such as medical robotics, industrial robotics, aerospace and mining industry.

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Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement

Cited by 15 publications

References 8 publications

Multipoint Two-Dimensional Curvature Optical Fiber Sensor Based on a Nontwisted Homogeneous Four-Core Fiber

Multipoint Two-Dimensional Curvature Optical Fiber Sensor Based on a Nontwisted Homogeneous Four-Core Fiber

Applications and Development of Multi-Core Optical Fibers

Recent developments in fibre optic shape sensing

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