摘要:
A coated optical fiber of the present invention comprises a glass fiber coated by at least two coating layers (a soft layer and a hard layer), wherein the glass surface of the glass fiber, where the at least two coating layers of the optical fiber are removed, has a peak intensity ratio of 0.6 or more in C 3 H 7 O+(m/z 59) or C 4 H 9 O+(m/z 73) with respect to Si+(m/z 28) peak in cation analysis of TOF-SIMS. The fiber avoids any increase in its transmission loss even when it is exposed to a high-humidity environment or immersed in water.
摘要翻译:本发明的涂覆光纤包括由至少两个涂层(软层和硬层)涂覆的玻璃纤维,其中玻璃纤维的玻璃表面,其中光纤的至少两个涂层是 在阳离子分析中,相对于Si +(m / z 28)峰,C 3 H 7 O +(m / z 59)或C 4 H 9 O +(m / z 73)的峰强度比为0.6以上 TOF-SIMS。 即使在暴露于高湿度环境或浸入水中时,纤维也能避免传输损失的任何增加。
摘要:
An optical fiber which reduces transmission loss increase even in a high humidity environment or under water is provided. To solve the above issue, an optical fiber according to the present invention comprises a glass optical fiber coated with at least two coating layers, soft and hard layers. The optical fiber is further coated by a colored resin to make a colored optical fiber. The hard layer and the color layer of the colored optical fiber have a free volume radius of at least 0.290nm according to positron annihilation lifetime spectroscopy.
摘要:
The present invention provides an optical fiber in which composites constructing its coating are not complicated, so, there is also little constraint in view of production, and, moreover, delamination between a glass optical fiber and a primary layer, and a bubble in the primary layer hardly arise. The optical fiber of the present invention is an optical fiber which has a glass optical fiber which has a core 1, which passes an optical signal, in a center portion, and a cladding 2 surrounding this, a primary protective layer 3 made to coat the glass optical fiber, a secondary protective layer 4 applied on this primary protective layer 3, and a third protective layer 5 applied to an outer periphery of this secondary protective layer 4, wherein glass transition temperature of the primary protective layer 3 is made to be higher than -20°C and 10°C or lower, glass transition temperature of the secondary protective layer 4 is made to be -10°C or less, and the glass transition temperature of the primary protective layer 3 is set higher than that of the secondary protective layer 4.
摘要:
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.