在Deutsche Telekom研究和技术中心的协作下,Siemens公共通信网络集团成功地创造了在600km光纤长度上传输信号的记录.它采用四个光波长,每一个光波长的传播速率均为10Gb/s,约相当于在数字信号质量中的48万路电话同时对话,或相当于每秒传输2×10~6打印页数.该信号是采用常用的光纤技术进行传输的,并采用特制的商品化光纤按纯光学方式恢复信号. In collaboration with the Deutsche Telekom Research and Technology Center, Siemens Public Communications Network Group has successfully created a record of transmitting signals over a 600 km optical fiber length using four optical wavelengths, each with a 10 Gb / s propagation rate, Equivalent to about 480,000 simultaneous conversations in the quality of digital signals or the equivalent of 2 × 10 ~ 6 pages per second. This signal is transmitted using commonly available optical fiber technology and uses a specially made commercially available optical fiber Pure optical recovery signal.