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虽然几个世纪以来人们就知道了介质纤维可传导光能,但直到1970年前后才开始用这种纤维进行远距离信息的传输。在那以前,制造纤维的材料吸收损耗太高不能在远距离上应用。1972年,研制出了高纯度的光学材料,从而使得在实验室制得的纤维传输损耗已降到
Although it has been known for centuries that dielectric fibers can transmit light energy, it was not until about 1970 that this fiber was used for the transmission of long-range information. Until then, the absorption loss of the material used to make the fiber was too high to be applied over long distances. In 1972, high-purity optical materials were developed so that the fiber transmission losses made in the laboratory have dropped to