High-voltage power cables play a crucial role in supplying electricity to electric trains, while signaling cables ensure the safety of train operations. Additionally, optical cables for data communication enhance the efficiency of railway operations and enable real-time. Keywords: Optical fiber; Access Network; Railway; Communication; Application. Abstract: The development of modern economy promotes the continuous development of high-speed trains and quasi speed trains. These radio systems connect trains with the traffic control systems in the railway's own data centers via. Prysmian have developed new cable designs and materials to provide the latest in chemical and mechanical resistance, fire resistance, EMC behaviour and enhanced transmission capacity.