Fiber optic cable industrial development driving force

Abstract: This article elaborated the world fiber optic communications from the technology advancement angle to develop 41 year history, China fiber optic cable to develop 30 year history. The optical fiber evolves the world intelligence transmission one kind of most main transmission medium from a high kun scientific tentative plan, China fiber optic cable industry from weak ones to strong ones finally becomes the world to make the great nation now, in a magnificent historical picture is seeping the technical unceasing progress all, is unceasingly mature and is perfect.

　　Key word: The technology advancement optic fiber laser fiber optical communications fiber optic transmission window fiber optic communications wave band optical fiber manufacture fiber optics industry fiber optical name brand world makes great nation 
　The holoscopic world fiber optic communications develops 41 year history and China fiber optical cable develops 30 year history, may discover, each time the industrial development progresses comes from the fiber optical cable technology advancement impetus.

　　First, fiber optical communications start

　　in 1966, Chinese Gao Kun who and English Hawke worked in Britain graceful proposed together took the optical transmission medium with the glass fiber the scientific tentative plan. They believed that from the electricity may along the electric conduction Jin Shuxian long-distance transmission, the light also be possible along the beacon glass fiber transmission, has produced the low loss optical fiber (i.e. optical fiber) the concept. At that time glass fiber's transmission loss was 1000dB/km, used in the medicine technology the short distance direct image transmission. They thought that the glass fiber the loss is may reduce, if can fall to 20dB/km below, may use in corresponding. Many countries start to be engaged in this aspect to study. 
　　in 1970, the American Healthy and peaceful Company developed successfully the loss was smaller than 20dB/km (633nm) the quartz monomode fiber. in 1972 healthy and peaceful fell optical fiber's loss 7dB/km. in 1973 the Bell Lab invention's MCVD law manufacture optical fiber, caused optical fiber's loss to fall 2.5dB/km. 
　　in 1970, the US Bell Lab developed successfully under the room temperature continuously running oscillation GaAlAs the semiconductor laser. Compare with the early invention's ruby crystal laser and the gas laser, the semiconductor laser volume is small, consumes the electricity to be few, can also use electricity directly the class modulation, the use great convenience, has found the appropriate photo source for the fiber optic communications. But, the initial period semiconductor laser life is very short, has for several hours. Hereafter, the various countries' unremitting efforts, each kind of practical laser comes out one after another. in 1976 Japanese NTT and the American Massachusetts Institute of Technology developed the InGaAsP long wave length laser. in 1977 the Bell Lab developed under the room temperature the life is 1,000,000 hour GaAlAs laser successfully, has laid the foundation for fiber optic communications's commercializing.

　　in 1976 the US first successfully carried on 44.736Mb/s in Atlanta to transmit the 10km fiber optic communications system field test, caused the fiber optic communications to step out the first step to the practical application. 
　in 1977 the US cleared in the world between the Chicago two telephone companies first to use the multi-mold optical fiber commercial fiber optic communications system (to be away from 7KM, wave length 850nm, speed 44.736Mb/s). Afterward Japan, Germany, Britain successively have also built up the fiber optic cable line. in 1979 the monomode fiber communications system also entered the field test. Later fiber optic communications in world swift development