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本文稿描述一种设计来安装在下水道地面的光缆。该光缆适于直接布放在人们难以接近的下水道中。 1 光缆设计概要光缆设计得确保适于光波信息传输,并能面对水压、化学侵蚀、潮气渗透及氢污染影响,在光缆的整个设计寿命中使光纤受到保护。此外,通过光纤被松散地包容于一种设计得能确保其活动适度的结构中,同时也借助于一根外包铝管,使光纤得到保护而免受轴向或径向的任何外应力。
This document describes a fiber optic cable designed to be installed on the sewer floor. The cable is suitable for direct placement in sewers where people are inaccessible. 1 Optical Fiber Cable Design Summary The optical fiber cable is designed to ensure that it is suitable for the transmission of light waves and is protected against the effects of water pressure, chemical attack, moisture penetration and hydrogen contamination, protecting the optical fiber throughout its design life. In addition, the optical fiber is loosely contained in a structure designed to ensure its moderate motion while also being protected by an externally coated aluminum tube from any external stress in the axial or radial direction.