摘要:
A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of −35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
摘要翻译:涂覆光纤可以具有初级涂层和二次涂层,其中初级涂层可以具有良好的抗微弯曲性,并且通过固化具有高固化速度的组合物获得。 在一个示例中,涂覆的光纤可以包括作为光纤,初级涂层和二次涂层。 光纤可以在1550nm处具有小于0.650dB / km的衰减增加,其中初级涂层的模量保持率至少为0.5,玻璃化转变温度为-35℃,其中初级涂层为 其通过固化具有固化剂量的初级涂料组合物获得小于0.65J / cm 2的最大可获得模量的95%。
摘要:
A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of −35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
摘要翻译:涂覆光纤可以具有初级涂层和二次涂层,其中初级涂层可以具有良好的抗微弯曲性,并且通过固化具有高固化速度的组合物获得。 在一个示例中,涂覆的光纤可以包括作为光纤,初级涂层和二次涂层。 光纤可以在1550nm处具有小于0.650dB / km的衰减增加,其中初级涂层的模量保持率至少为0.5,玻璃化转变温度为-35℃,其中初级涂层为 其通过固化具有固化剂量的初级涂料组合物获得小于0.65J / cm 2的最大可获得模量的95%。
摘要:
An optical fiber having an internal glass portion, a first coating layer surrounding the glass portion and a second coating layer surrounding the first coating layer. The first coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition having a radiation curable oligomer having a backbone derived from polypropylene glycol and a dimer acid based polyester polyol. The cured polymeric material has: (a) a hardening temperature (Th) from −10° C. to about −20° C. and a modulus measured at the Th lower than 5.0 MPa; or (b) a hardening temperature (Th) from −20° C. to about −30° C. and a modulus measured at the Th lower than 20.0 MPa; or (c) a hardening temperature (Th) lower than about −30° C. and a modulus measured at the Th lower than 70.0 MPa.
摘要:
The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: a) a hardening temperature (Th) of from −10° C. to about −20° C. and a modulus measured at said Th of lower than 5.0 MPa; or b) a hardening temperature (Th) of from −20° C. to about −30° C. and a modulus measured at said Th of lower than 20.0 MPa; or c) a hardening temperature (Th) of lower than about −30° C. and a modulus measured at said Th of lower than 70.0 MPa.
摘要:
A method for controlling attenuation losses caused by microbending on the signal transmitted by an optical fiber having an internal glass portion. A first coating layer of a first polymeric material surrounds the glass portion and a second coating layer of a second polymeric material surrounds the first coating layer. The first polymeric material has a hardening temperature lower than 10° and an equilibrium modulus lower than 1.5 MPa.
摘要:
Optical fiber capable of controlling attenuation losses caused by microbending on the signal transmitted thereby. The optical fiber comprises: a) an internal glass portion; b) a first coating layer of a first polymeric material surrounding said glass portion; and c) a second coating layer of a second polymeric material surrounding said first coating layer, wherein said first polymeric material has a hardening temperature lower than −10° C., an equilibrium tensile modulus lower than 1.5 MPa, wherein said first coating layer has a thickness of from 18 μm to 28 μm and wherein said second coating layer has a thickness of from 10 μm to 20 μm.