| 摘要 |
PURPOSE:To obtain the titled fiber capable of preventing increasement of an optical transmission loss due to tensile stress by incorporating poly-n- butylmethacrylate to a core material, and polysiloxane resin having a cross- linked structure to a clad material, respectively. CONSTITUTION:The titled fiber comprises the poly-n-butylmethacrylate in the core material, and the polysiloxane having the cross-linked structure in the clad material respectively. The titled fiber enables to maintain flexibility, even in case of the titled fiber having a relatively large diameter, and has a sufficient dimensional stability at a temp. range of -20-60 deg.C in general used and is integrally formed with the clad layer with ease, by using the poly-n- butylmethacrylate which has a glass transition temp. of a room temp. as the core material. The cross-linking degree of the polysiloxane resin which is used for the clad layer, is controlled, whereby the tensile strength of the titled fiber can be easily changed. The cross-linking method for the polysiloxane resin comprises a chemical cross-linking due to an org. peroxide and an irradiation cross-linking due to an ionizing radiation such as gamma-ray, etc. Thus, the titled fiber having very good flexibility and less tendency for increasing the optical transmission loss due to the tensile stress, is obtd. |
