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按照KMI公司(一家市场研究公司)的一份研究报告,美国长距离通信线路到1989年底将敷设接近14.6419万公里的光缆,光缆中的光纤将超过30亿公里。该报告指出,80％以上的光缆为美国Sprint、MCI和AT＆T三家公司所拥有,报告还列举了另外15家从事长途光纤业务的公司,并列出了到1989年底他们光纤网的规划长度。 AT&T将拥有最长的网络,接近4.827万公里。美国Sprint和MCI公司将拥有3.2180万公里。Williams电信集团是第四位最大的网络拥有者,到1989年底将敷设大约0.9654万公里。该报告指出:“这种巨大的网络的型式和容量将是大城市的回路和用户环路市场增长中的一个主要因素”。
According to a research report by KMI, a market research firm, by the end of 1989, the United States will deploy nearly 146,419 kilometers of fiber optic cables and more than 3 billion fibers in fiber optic cables by the end of 1989. The report notes that more than 80% of fiber optic cables are owned by Sprint, MCI and AT & T in the United States. The report also lists 15 other companies that work on long-haul fiber and lists the length of their fiber-optic network by the end of 1989. AT & T will have the longest network, nearly 48.27 million kilometers. The U.S. Sprint and MCI companies will have 31.8 million kilometers. Williams Telecommunications Group is the fourth largest network owner and will have around 19,965,400 kilometers by the end of 1989. The report states: “The type and capacity of this huge network will be a major factor in the growth of the loop and subscriber loop markets in metropolitan areas.”