美国印第安纳波利斯地区的两个电缆电视公司联合购买并安装了据称是第一条单模光纤光缆系统.随着系统安装成功,该公司和该地美国电缆电视公司现巳可分办广告业务,带来经济利益.光发射器与接收器和频率调制/解调器是从电讯公司买来的,而光缆由另一家公司供应. Two cable television companies in the Indianapolis area of ​​the United States jointly purchased and installed the allegedly the first single-mode fiber optic cable system, which the company and the U.S. cable television company now have the option of advertising as the system is successfully installed Business, with economic benefits.Light launchers and receivers and frequency modulators / demodulators are bought from telecommunications companies, while fiber optic cables are supplied by another company.