On reasons for strong absorption of light in an optical fibre at high temperature

Yakovlenko, S. I.

doi:10.1070/qe2004v034n09abeh002762

Cited by 16 publications

(4 citation statements)

References 5 publications

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“…Several hypotheses have been put forward to explain the fiber fuse phenomenon. These include a chemical reaction involving the exothermal formation of germanium (Ge) defects [10], self-propelled self-focusing [3], thermal lensing of the light in the fiber via a solitary thermal shock wave [5], and the radiative collision of SiO and O complexes [32].…”

Section: Introductionmentioning

confidence: 99%

Heat Conduction Modeling of Fiber Fuse in Single-Mode Optical Fibers

Shuto¹

2014

Journal of Photonics

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The unsteady-state thermal conduction process in single-mode optical fiber was studied theoretically with the explicit finite-difference method. We assumed that the vitreous silica optical fiber underwent pyrolysis at elevated temperatures to formSiOx(x~1). We also proposed a model in which the optical absorption coefficient of the core layer increased with increasing molar concentration ofSiOx. The core-center temperature changed suddenly and reached over3×104 K when a 1.064-μm laser power of 2 W was input into a short core layer of 40 μm length, which was heated at 2923 K. This thermal wave, that is, a fiber fuse, increased in size and propagated toward the light source at a rate of about 0.54 m/s. The calculated propagation velocity of the fiber fuse was in agreement with the experimental value. Moreover, the average temperature of the radiated region of the core layer gradually approached a temperature of about 5700 K. It was found that the final average temperature was close to the experimentally reported values.

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Section: Introductionmentioning

confidence: 99%

Heat Conduction Modeling of Fiber Fuse in Single-Mode Optical Fibers

Shuto¹

2014

Journal of Photonics

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“…Therefore, in the near future the fiber fuse phenomenon will pose a real danger to optical communication systems constructed with conventional single-mode fibers [5]. There have already been many experimental and theoretical reports on the fiber fuse phenomenon [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. In addition, several devices have been proposed with a view to avoiding the catastrophic damage caused by a fiber fuse, for example, a fiber fuse terminator using a tapered fiber [22] and a thermally-diffused expanded core (TEC) fiber [23].…”

Section: Open Accessmentioning

confidence: 99%

Optical Fiber for High-Power Optical Communication

Kurokawa

2012

Crystals

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Abstract:We examined optical fibers suitable for avoiding such problems as the fiber fuse phenomenon and failures at bends with a high power input. We found that the threshold power for fiber fuse propagation in photonic crystal fiber (PCF) and hole-assisted fiber (HAF) can exceed 18 W, which is more than 10 times that in conventional single-mode fiber (SMF). We considered this high threshold power in PCF and HAF to be caused by a jet of high temperature fluid penetrating the air holes. We showed examples of two kinds of failures at bends in conventional SMF when the input power was 9 W. We also observed the generation of a fiber fuse under a condition that caused a bend-loss induced failure. We showed that one solution for the failures at bends is to use optical fibers with a low bending loss such as PCF and HAF. Therefore, we consider PCF and HAF to be attractive solutions to the problems of the fiber fuse phenomenon and failures at bends with a high power input.

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“…Therefore, in the near future the fiber fuse phenomenon will pose a real danger to optical communication systems constructed with conventional single-mode fibers [37]. There have already been many experimental and theoretical reports on the fiber fuse phenomenon [20,33,34,36,[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. In addition, several devices have been proposed with a view to avoiding the catastrophic damage caused by a fiber fuse, for example, a fiber fuse terminator using a tapered fiber [53] and a thermally-diffused expanded core (TEC) fiber [54] for an input power of not more than 2 W. A device has been reported that can rapidly detect a fiber fuse and terminate it by monitoring the light backreflected from it [55].…”

Section: Applicability To High Power Transmissionmentioning

confidence: 99%

Holey fibers for low bend loss

Nakajima¹,

Saito²,

Yamada³

et al. 2013

Nanophotonics

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Bending-loss insensitive fiber (BIF) has proved an essential medium for constructing the current fiber to the home (FTTH) network. By contrast, the progress that has been made on holey fiber (HF) technologies provides us with novel possibilities including non-telecom applications. In this paper, we review recent progress on hole-assisted type BIF. A simple design consideration is overviewed. We then describe some of the properties of HAF including its mechanical reliability. Finally, we introduce some applications of HAF including to high power transmission. We show that HAF with a low bending loss has the potential for use in various future optical technologies as well as in the optical communication network.

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On reasons for strong absorption of light in an optical fibre at high temperature

Cited by 16 publications

References 5 publications

Heat Conduction Modeling of Fiber Fuse in Single-Mode Optical Fibers

Heat Conduction Modeling of Fiber Fuse in Single-Mode Optical Fibers

Optical Fiber for High-Power Optical Communication

Holey fibers for low bend loss

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