Origin of temperature dependence of microbending attenuation in fiber optic cables

Hanson, Eric G.

doi:10.1080/01468038008202298

Cited by 20 publications

(8 citation statements)

References 10 publications

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“…Any eccentricity of the jacket however can generate fiber microbending and any defects in the coat integrity or even fluctuations in coating diameter can exaggerate this effect [22]- [24]. For example, when a "soft-hard" combination such as nylon 12 on silicone resin has been used, and axial contraction can occur in the stronger hard coating.…”

Section: Tight Designmentioning

confidence: 97%

A review of the environmental factors affecting optical cable design

Wiltshire

Reeve

1988

J. Lightwave Technol.

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Absfrael-This paper reviews the environmental factors that affect optical cable designs. The main environmental factors of cuncern are fiber bending loss, hydrogen loss degradation, and stress corrosion. Each of these factors is examined with respect to the impact on optical cable design. Due ti) the limited field data available on environmental effects, it is necessary for cable designers to rely on theoretical analysis and laboratory test data; this has resulted in a conservative optical cable design philosophy. This situation should improve as mure field data becomes available.

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Section: Tight Designmentioning

confidence: 97%

A review of the environmental factors affecting optical cable design

Wiltshire

Reeve

1988

J. Lightwave Technol.

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“…The bi-quadratic characteristic equation (5) of the differential equation (3) has the following solution:…”

Section: Basic Equationmentioning

confidence: 99%

“…If the compressive stresses are high, the functional (optical) and or mechanical ("physical") reliability of the coated fiber could be compromised [3]. The phenomena of low temperature micro-bending attenuation [4][5][6][7] in, and particularly buckling [8][9][10][11] of, dual-coated optical fibers have been addressed in numerous publications as one of the major causes of inadequate performance of coated fibers. A similar situation has been encountered in the field of fiberreinforced composites: if a low expansion fiber buckles at low temperature conditions within the highexpansion matrix unacceptably high stresses might arise [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Buckling conditions for a dual-coated optical fiber

Suhir

2013

SPIE Proceedings

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The elastic stability (buckling) condition for a short dual-coated optical-fiber experiencing mechanical and/or thermally induced compression is established based on the developed analytical (mathematical) predictive model. The problem is reduced to a situation when a cantilever beam of finite length is supported by a continuous elastic foundation and is subjected to a compressive force applied to the beam's free end. Easy-to-use practical guidelines and a simple diagram are suggested for choosing the adequate length of the fiber and/or its flexural rigidity and/or the characteristics of the coating materials, so that the fiber remains elastically stable. The developed model can be used also in the design and reliability evaluations of composites, including nano-composites, and in flexible (large area) photonics when high-modulus and lowexpansion fibers are embedded into a high-modulus-and-low-expansion matrix and experience axial compression at low temperature conditions.

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“…One of the objectives of our analysis is to obtain an answer to these questions. It is noteworthy that the question of the effect of the finite length of the dual-coated fiber on its mechanical behavior did not arise in the problems associated with low temperature micro-bending of long fibers [8,[12][13][14], since it was clear that fibers intended for long haul communications were by any standard long enough to be treated as infinitely long ones. The problem of the elastic stability of a dual-coated fiber of finite length can be viewed as a special case of the problem addressed in Section 1 of this paper, namely, when the lateral force P is equal to zero.…”

Section: Elastic Stabilitymentioning

confidence: 99%

Lateral compliance and elastic stability of a dual-coated optical fiber of finite length, with application to nano-rods embedded into low-modulus elastic media

Suhir

2009

2009 59th Electronic Components and Technology Conference

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We address the lateral compliance and elastic stability of a dual-coated fiber of finite length (such as, e.g., an optical fiber interconnect) and apply the obtained solution to a nanorod (nano-wire, nano-fiber, carbon nano-tube) embedded into a low-modulus elastic medium. The latter situation is encountered in nano-composites, as well as in some advanced heat-spreaders employing nano-rod-arrays. Both the photonic (dual-coated fiber) and the nanotechnology (nano-rod embedded into an elastic medium) related problems can be reduced, as far as modeling is concerned, to the problem of the mechanical behavior of a cantilever (in the case of an optical fiber) or a "free-free" (in the case of a nano-rod) beam lying on a continuous elastic foundation and subjected to the combined action of axial compression and lateral loading or to the elevated axial loading. We develop physically meaningful analytical ("mathematical") models that enable one to predict the behavior of the structural elements in question. Our models enable one to determine the appropriate length of the fiber (rod), establish the condition of its elastic stability, select the coating materials or the embedding elastic medium with the most favorable properties, establish the adequate thickness of the primary coating or the level of the contact pressure, etc.

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Origin of temperature dependence of microbending attenuation in fiber optic cables

Cited by 20 publications

References 10 publications

A review of the environmental factors affecting optical cable design

A review of the environmental factors affecting optical cable design

Buckling conditions for a dual-coated optical fiber

Lateral compliance and elastic stability of a dual-coated optical fiber of finite length, with application to nano-rods embedded into low-modulus elastic media

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