Optical fiber elements for addressing individual cores in multicore optical fiber sensors

Napierała, Marek; Murawski, M.; Szymanski, M.; Ostrowski, L.; Szostkiewicz, Lukasz; Mergo, Paweł; Jaroszewicz, Leszek R.; Nasiłowski, Tomasz

doi:10.1117/12.2059669

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…The measurement of the strain induced to the different cores of the MCF is especially useful to determine both the magnitude and direction of the optical fiber curvature [3][4][5][6].…”

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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“…The measurement of the strain induced to the different cores of the MCF is especially useful to determine both the magnitude and direction of the optical fiber curvature [3][4][5][6].…”

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

View full text Add to dashboard Cite

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“…MCFs can be used directly with most devices, but a complex and precise optical mapping between cores and individual modes or cores are required. This calls for development of special fan-out components to allow "plug and play" use of MCFs for sensing applications [111]. Multiple techniques are recently developed for low-loss single mode and multimode fibres interference with variety of fibre arrangements.…”

Section: An Important Part Of Mcfs Adaptation For Fosss Relies On Devmentioning

confidence: 99%

“…This technique was originally developed for connections of high power fibre laser modules [114]. Fan-outs used in FOSSs can be simply customised using TFBs for 4-core or 7-core MCFs [111]. The use of direct focused femtosecond lasers for inscription of integratedoptic waveguide chips, has also shown promising results to develop fast and section SSMFs to MCF fan-outs [112].…”

Section: An Important Part Of Mcfs Adaptation For Fosss Relies On Devmentioning

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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“…This subsection mainly describes the multi-core elements for addressing individual cores in optical sensors. For specialty sensing MCFs with enhanced spatial-channel densities, by using adhesive and heating up the fiber bundle in the capillary, a more compact configuration with fiber cores fixed in the capillary can be achieved compared to just a bundle of SMFs [ 80 ]. When the light is introduced into the cores of MCFs by separate light sources, the alignment of tapered MCF and SMF can be used to control the division of light power among the non-uniformly distributed fiber cores in the cross-section of MCF [ 81 ].…”

Section: Key Components Of Sdm Techniquementioning

confidence: 99%

Advanced Spatial-Division Multiplexed Measurement Systems Propositions—From Telecommunication to Sensing Applications: A Review

Weng

Ip²,

Pan

et al. 2016

Sensors

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The concepts of spatial-division multiplexing (SDM) technology were first proposed in the telecommunications industry as an indispensable solution to reduce the cost-per-bit of optical fiber transmission. Recently, such spatial channels and modes have been applied in optical sensing applications where the returned echo is analyzed for the collection of essential environmental information. The key advantages of implementing SDM techniques in optical measurement systems include the multi-parameter discriminative capability and accuracy improvement. In this paper, to help readers without a telecommunication background better understand how the SDM-based sensing systems can be incorporated, the crucial components of SDM techniques, such as laser beam shaping, mode generation and conversion, multimode or multicore elements using special fibers and multiplexers are introduced, along with the recent developments in SDM amplifiers, opto-electronic sources and detection units of sensing systems. The examples of SDM-based sensing systems not only include Brillouin optical time-domain reflectometry or Brillouin optical time-domain analysis (BOTDR/BOTDA) using few-mode fibers (FMF) and the multicore fiber (MCF) based integrated fiber Bragg grating (FBG) sensors, but also involve the widely used components with their whole information used in the full multimode constructions, such as the whispering gallery modes for fiber profiling and chemical species measurements, the screw/twisted modes for examining water quality, as well as the optical beam shaping to improve cantilever deflection measurements. Besides, the various applications of SDM sensors, the cost efficiency issue, as well as how these complex mode multiplexing techniques might improve the standard fiber-optic sensor approaches using single-mode fibers (SMF) and photonic crystal fibers (PCF) have also been summarized. Finally, we conclude with a prospective outlook for the opportunities and challenges of SDM technologies in optical sensing industry.

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Optical fiber elements for addressing individual cores in multicore optical fiber sensors

Cited by 3 publications

References 9 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

Recent developments in fibre optic shape sensing

Advanced Spatial-Division Multiplexed Measurement Systems Propositions—From Telecommunication to Sensing Applications: A Review

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