Arc-discharge effects on residual stress and refractive index in single-mode optical fibers.
TLDR
Arc-discharge effects on the residual stress and refractive index in single-mode optical fibers are investigated using a previously developed three-dimensional concurrent stress-index measurement method.Abstract:
Arc-discharge effects on the residual stress and refractive index in single-mode optical fibers are investigated using a previously developed three-dimensional concurrent stress-index measurement method. Using commercial optical fibers and a commercial fusion splicer, the residual stress and refractive index perturbations caused by weak electrical arc discharges in single-mode fibers were measured. Refractive index changes greater than 10-4 and longitudinal perturbation lengths of less than 500 μm were shown to be possible. The subsequent prospects for arc-induced long-period fiber gratings are analyzed, and a typical transmission resonance is predicted to have a depth of 56 dB and a bandwidth of 0.08 nm at a wavelength of 1585 nm. The results of this investigation will be useful in modeling device performance and optimization of arc-induced long-period fiber grating fabrication.read more
Citations
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Higher-order diffraction of long-period microfiber gratings realized by arc discharge method
TL;DR: Novel microfiber long period gratings characterized by higher-order diffraction are reported, which are fabricated using an arc discharge method and have high reproducibility, stability, flexibility, and low production costs.
Journal ArticleDOI
Arc-discharge-induced off-axis spiral long period fiber gratings and their sensing characteristics
Yin Liu,Hongchang Deng,Libo Yuan +2 more
TL;DR: In this paper, an off-axis spiral long-period fiber grating (OAS-LPFG) was fabricated by arc discharge technology in a single mode fiber, which can obtain a high torsion sensitivity, distinguish the direction of the twist (clockwise or counterclockwise), and have a higher strain sensitivity.
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Spatially Arrayed Long Period Gratings in Multicore Fiber by Programmable Electrical Arc Discharge
TL;DR: In this article, the authors inscribed spatially arrayed long period gratings (LPGs) into a heterogeneous seven-core fiber and measured the strain and temperature simultaneously with the spatial response matrix to eliminate the cross sensitivity.
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Spectrum online-tunable Mach–Zehnder interferometer based on step-like tapers and its refractive index sensing characteristics
TL;DR: In this paper, a novel refractive index (RI) sensor based on an asymmetrical Mach-Zehnder interferometer (MZI) with two different step-like tapers is proposed.
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Reduction of intrinsic polarization dependence in arc-induced long-period fiber gratings
TL;DR: In this paper, an arc-induced long-period fiber gratings (LPFG) fabrication method is proposed based upon the rotation of the optical fiber by an axial angle of 180 degrees at each electric arc discharge, inducing opposite point-by-point asymmetric modulations over the entire length of the LPFG.
References
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Photoelastic Constants of Vitreous Silica and Its Elastic Coefficient of Refractive Index
William Primak,Daniel Post +1 more
TL;DR: The photoelastic constants and their dispersion for visible light were determined for two samples of vitreous silica, Corning and Herasil No. 1, and the results for the mercury green line, 546 mμ, are quoted here as mentioned in this paper.
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Fabrication of selective injection microstructured optical fibers with a conventional fusion splicer
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