Fibre optic devices produced by arc discharges

Rego, G.

doi:10.1088/2040-8978/12/11/113002

Cited by 21 publications

(18 citation statements)

References 86 publications

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“…The fabrication of tapered optical fibres is generally achieved by heating a short section of the fibre while simultaneously pulling the two ends of the fibre, as illustrated in Figure 1. The heat source could be the flame of a gas burner [8], high power laser radiation [15,16], or an arc discharge [17]. In single mode optical fibre, the one of the functions of the cladding is to reduce the penetration of the electric field of the propagating mode into surrounding medium.…”

Section: Introductionmentioning

confidence: 99%

Tapered Optical Fibre Sensors: Current Trends and Future Perspectives

Korposh

James

Lee

et al. 2019

Sensors

148

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The development of reliable, affordable and efficient sensors is a key step in providing tools for efficient monitoring of critical environmental parameters. This review focuses on the use of tapered optical fibres as an environmental sensing platform. Tapered fibres allow access to the evanescent wave of the propagating mode, which can be exploited to facilitate chemical sensing by spectroscopic evaluation of the medium surrounding the optical fibre, by measurement of the refractive index of the medium, or by coupling to other waveguides formed of chemically sensitive materials. In addition, the reduced diameter of the tapered section of the optical fibre can offer benefits when measuring physical parameters such as strain and temperature. A review of the basic sensing platforms implemented using tapered optical fibres and their application for development of fibre-optic physical, chemical and bio-sensors is presented.

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Section: Introductionmentioning

confidence: 99%

Tapered Optical Fibre Sensors: Current Trends and Future Perspectives

Korposh

James

Lee

et al. 2019

Sensors

148

View full text Add to dashboard Cite

show abstract

“…Among the different available techniques the electric arc has paved its way during the past two decades since it is a simple, flexible, and low cost technique that enables the writing of gratings in all kinds of fibers. Furthermore, as is the case for CO 2 and IR femtosecond laser radiation, the arc discharge technique also overcomes several limitations of the technique based on UV laser radiation [6] and enables the fabrication of several optical fiber components [7]. In fact, based on the number of publications, arc-induced gratings compares well with those fabricated by using laser radiation.…”

Section: Introductionmentioning

confidence: 97%

Arc-Induced Long Period Fiber Gratings

Rego

2016

Journal of Sensors

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Long period fiber gratings produced by the electric arc technique have found an increasing interest by the scientific community due to their ease to fabricate, virtually enabling the inscription in any kind of fiber, low cost, and flexibility. In 2005 we have presented the first review on this subject. Since then, important achievements have been reached such as the identification of the mechanisms responsible for gratings formation, the type of symmetry, the conditions to increase fabrication reproducibility, and their inscription in the turning points with grating periods below 200 μm. Several interesting applications in the sensing area, including those sensors working in reflection, have been demonstrated and others are expected, namely, related to the monitoring of extreme temperatures, cryogenic and high temperatures, and high sensitivity refractometric sensors resulting from combining arc-induced gratings in the turning points and the deposition of thin films in the transition region. Therefore, due to its pertinence, in this paper we review the main achievements obtained concerning arc-induced long period fiber gratings, with special focus on the past ten years.

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“…LPGs based on electric arc discharge are due to Dianov et al [24]. In the following years, the electric arc discharge technique has been widely investigated and several review papers have been published by different groups [27] [28]. In most cases, the formation of gratings is mainly attributed to fiber geometrical changes and to silica stress relaxation due to the high temperature of the arc discharge [26] [29].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Long-Period Gratings Written in Standard and Fluorine-Doped Fibers by Electric Arc Discharge

et al. 2016

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In this paper, we present a comparative study of long-period gratings (LPGs) written in the standard Ge-doped fiber and in two different fluorine-doped fibers by means of the electric arc discharge (EAD)-based technique. Concerning Ge-doped fibers, we present an assessment of the EAD procedure by fabricating relatively short LPGs with deep attenuation bands (up to 32 dB) and trivial power losses. We also demonstrate the ability to manage the effect of the single EAD perturbation to select grating length, which in turn acts on the bandwidth of attenuation bands, without compromising depth. Furthermore, for the first time, we produced LPGs in F-doped fibers with attenuation bands deeper than 30 dB, demonstrating the dependence of the spectra on the grating period. Finally, we illustrate a comparative experimental study on the sensitivity of LPGs fabricated in the standard and F-doped fibers with surrounding refractive index (SRI) and temperature changes. We proved that the SRI response of LPGs in F-doped fibers is significantly higher than in the standard fiber and it strongly depends on the type of F-doped fiber considered. LPGs written in F-doped fibers exhibit a slightly lower temperature sensitivity (in the range 20-30 pm/°C for λres2 cladding mode) than the LPG in the standard fiber (45 pm/°C)

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Fibre optic devices produced by arc discharges

Cited by 21 publications

References 86 publications

Tapered Optical Fibre Sensors: Current Trends and Future Perspectives

Tapered Optical Fibre Sensors: Current Trends and Future Perspectives

Arc-Induced Long Period Fiber Gratings

Comparative Study of Long-Period Gratings Written in Standard and Fluorine-Doped Fibers by Electric Arc Discharge

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