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一、国内外光纤技术发展概况 光纤技术是60年代问世的新兴技术,到1988年止,全世界已敷设大约1000万芯公里光纤,预计本世纪末,全世界敷设光缆总数将超过1.08亿芯公里,其中发展较快的为美国、日本、联邦德国等国。近年来,美国光纤需求量以每年21％速度增长,光纤的技术特性也迅速提高。光纤的发展经历了多模短波长、多模长波长、单模长波长三个重要阶段,现在1.3μm波长单模光纤已广泛使用,商品单模光纤的衰减值已达0.35dB/km左右。当
First, the development of optical fiber technology at home and abroad Overview Optical fiber technology is an emerging technology introduced in the 60s. By 1988, around 10 million core kilometers of optical fiber had been laid in the world. It is estimated that by the end of the century, the total number of optical cables laid in the world will exceed 108 million core kilometers. The faster developing countries are the United States, Japan, and the Federal Republic of Germany. In recent years, the demand for optical fiber in the United States has grown at a rate of 21% per year, and the technical characteristics of optical fibers have also rapidly increased. The development of optical fiber has experienced three major stages of multi-mode short wavelength, multi-mode long wavelength, and single-mode long wavelength. Currently, 1.3 μm wavelength single mode fiber has been widely used, and the attenuation value of commercial single-mode optical fiber has reached about 0.35 dB/km. when