Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Reexamination Certificate
2011-07-12
2011-07-12
Le, Uyen-Chau N (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
C385S126000
Reexamination Certificate
active
07978948
ABSTRACT:
The present invention relates to an optical fiber accommodated in an optical fiber cable, and more particularly, to an optical fiber which optimizes optical fiber coating resin and color resin and restrains an increase in transmission loss of the optical fiber due to an operating environment and aged deterioration and provides an optical fiber and optical fiber ribbon without any increase of transmission loss irrespective of the operating environment and aged deterioration, and especially when exposed to water or high humidity.The optical fiber is an optical fiber coated with at least two layers of coating resin, wherein the outermost coated coating resin is a colored layer made of color resin and when the optical fiber is immersed in water which is heated to 60° C. for 168 hours, an extraction rate of the coating resin of the optical fiber is set to 1.5 mass percent or below.
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Arashitani Yoshihiro
Mochizuki Kouji
Nakajima Yasuo
Okada Mitsunori
Tanaka Hiroki
Le Uyen-Chau N
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Smith Chad H
The Furukawa Electric Co. Ltd.
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