Optical fiber coatings for biomedical applications

Biswas, D.R.

doi:10.1117/12.57701

Cited by 27 publications

(7 citation statements)

References 8 publications

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“…Two kinds of materials that are inorganic materials and metals are considered as hermetical coatings for optical fibers. Inorganic coatings such as oxides, carbides, nitrides and carbons show high resistance to moisture attack [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of the coating thickness and roughness on the mechanical strength and thermally induced stress voids in nickel-coated optical fibers prepared by electroless plating method

et al. 2005

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Section: Introductionmentioning

confidence: 99%

Effect of the coating thickness and roughness on the mechanical strength and thermally induced stress voids in nickel-coated optical fibers prepared by electroless plating method

et al. 2005

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“…To protect the silica glass fiber from moisture attach, inorganic coatings such as oxides, carbides, nitrides, and carbon are being considered. [2][3][4][5] Many of these coated fibers show lower strength ͑3.5-4 GPa͒ but higher resistance to moisture attack. On the other hand, metallic coatings such as aluminum, indium, tin, antimony, zinc, lead, copper, nickel, and gold also are applied on optical fibers.…”

Section: Introductionmentioning

confidence: 99%

Thermal stresses in metal-coated optical fibers

Shiue

Lin

1998

Journal of Applied Physics

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The thermal stresses in metal-coated optical fibers are analyzed. Several thermal stresses are important in a metal-coated optical fiber. First, the interfacial radial stress would produce microbending loss. Secondly, the thermally induced axial force in the glass fiber would induce buckling of the fiber and also results in an increase of bending loss. Thirdly, when the interfacial shear stress is larger than its shear strength, the metal coating would be delaminated from the glass fiber. Finally, when the normal stress in the metal coating is larger than its tensile strength, the metal coating would be broken. These thermal stresses could be minimized by appropriately selecting physical properties of the metal coating and its thickness. To minimize these thermal stresses, the Young's modulus, thermal expansion coefficient, and Poisson's ratio of the metal coating should be decreased. On the other hand, the thickness of the metal coating has an optimal value. Based on the strength consideration, an optimal design of the metal-coated optical fiber also is considered.

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“…Recent developments allow the enhancement of the mechanical strength (especially fatigue resistance) of optical fibers via the application of hermetic coatings [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Thick-aluminum-coated optical fibers: fabrication and sensor application

Lisbôa

Soda

Jen

et al. 1996

Smart Mater. Struct.

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A continuous casting method has been used to produce thick aluminum coatings on optical fibers, allowing the production of fibers with coating thicknesses between 0.5 and 1.5 mm and lengths of 1 - 3 m. The thickness is determined by the mold channel diameter and the length is chosen arbitrarily. Such thick metallic coatings with unidirectional grain structures improve the mechanical strength of glass optical fibers and allow fibers to be embedded successfully in concrete without additional attention. A polarimetric type of optical fiber sensor implemented with a strand of thick-aluminum-coated birefringent optical fiber to sense dynamic load is described and a new method for evaluating the polarimetric sensor response is presented.

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Optical fiber coatings for biomedical applications

Cited by 27 publications

References 8 publications

Effect of the coating thickness and roughness on the mechanical strength and thermally induced stress voids in nickel-coated optical fibers prepared by electroless plating method

Effect of the coating thickness and roughness on the mechanical strength and thermally induced stress voids in nickel-coated optical fibers prepared by electroless plating method

Thermal stresses in metal-coated optical fibers

Thick-aluminum-coated optical fibers: fabrication and sensor application

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