Optical fiber

G - Physics – 02 – B

Patent

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Details

G02B 6/44 (2006.01) G02B 6/00 (2006.01)

Patent

CA 2350457

An optical fiber (1) characterized in that the optical fiber comprises glass portions (2, 3) including a core (2) and a clad (3) and one or more coating layers (4a, 4b) formed around the glass portions (2, 3), and the Young's modulus of the coating layer (4) at 23 ~C after the glass portions (2, 3) are removed is 400 MPa or less. The optical fiber (1) is hardly influenced by the side pressure exerted, and has excellent transmission characteristics. The Young's modulus of the coating layer (4) can be measured by bringing the coating layer (4) left after removing the glass portions (2, 3) from the optical fiber (1) to a tension test.

L'invention concerne une fibre optique (1) caractérisée en ce qu'elle comprend des parties de verre (2, 3) présentant un coeur (2) et une gaine (3) et une ou plusieurs couches de revêtement (4a, 4b) formées autour des parties de verre (2, 3), et le module de Young de la couche de revêtement (4) à 23 ·C, est de 400 MPa ou moins, une fois que les parties de verre (2, 3) sont éliminées. La fibre optique (1) est faiblement influencée par la pression latérale exercée et elle présente d'excellentes caractéristiques de transformation. Le module de Young de la couche de revêtement (4) peut être mesuré par soumission de la couche de revêtement (4) laissée après élimination des parties de verre (2, 3) de la fibre optique (1) à un essai de traction.

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