英语翻译Advantages of Optical Fiber Communication(g)Ruggedness a
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英语翻译
Advantages of Optical Fiber Communication
(g)Ruggedness and flexibility.Although protective coatings are essential,optical fibers may be manufactured with very high tensile strengths.Perhaps surprisingly for a glassly substance,the fibers may also be bent to quite small radii or twisted without damage.Furthermore cable structures have been developed,which have proved flexible,compact and extremely rugged.Taking the size and weight advantage into account,these optical fiber cables are generally superior in terms of storage,transportation,handling and installation to corresponding copper cables,whilst exhibiting art least comparable strength and durability.
Overall system costs when utilizing optical fiber communication on long-haul links,however,are substantially less than those for equivalent electrical line systems because of the low loss and wideband properties of the optical transmission medium.As indicated in(f),the requirement for intermediate repeaters and the associated electronics is reduced,giving a substantial cost advantage.Although this cost benefit gives a net gain for long-haul links it is not always the case in short-haul applications where the additional cost incurred,due to the electrical-optical conversion(and vice versa),may be a deciding factor.Nevertheless,there are other possible cost advantages in relation to shipping,handing,installation and maintenance,as well as the features indicated in(c)and (d)which may prove significant in the system choice.
The reducing costs of optical fiber communications has not only provided strong competition with electrical line transmission systems,but also for microwave and millimeter wave radio transmission systems.Although these systems are reasonably wideband the relatively short span “line of sight” transmission necessitates expensive aerial towers at intervals no longer than a few tens of kilometers.Hence optical fiber is fast becoming the dominant transmission medium within the major industrialized societies.
Many advantages are therefore provided by the use of a light-wave carrier within a transmission medium consisting of an optical fiber.The fundamental principles giving rise to these enhanced performance characteristics,together with their practical realization,are described in the follwing chapters.However,a general understanding of the basic nature and properties of light is assumed.
Advantages of Optical Fiber Communication
(g)Ruggedness and flexibility.Although protective coatings are essential,optical fibers may be manufactured with very high tensile strengths.Perhaps surprisingly for a glassly substance,the fibers may also be bent to quite small radii or twisted without damage.Furthermore cable structures have been developed,which have proved flexible,compact and extremely rugged.Taking the size and weight advantage into account,these optical fiber cables are generally superior in terms of storage,transportation,handling and installation to corresponding copper cables,whilst exhibiting art least comparable strength and durability.
Overall system costs when utilizing optical fiber communication on long-haul links,however,are substantially less than those for equivalent electrical line systems because of the low loss and wideband properties of the optical transmission medium.As indicated in(f),the requirement for intermediate repeaters and the associated electronics is reduced,giving a substantial cost advantage.Although this cost benefit gives a net gain for long-haul links it is not always the case in short-haul applications where the additional cost incurred,due to the electrical-optical conversion(and vice versa),may be a deciding factor.Nevertheless,there are other possible cost advantages in relation to shipping,handing,installation and maintenance,as well as the features indicated in(c)and (d)which may prove significant in the system choice.
The reducing costs of optical fiber communications has not only provided strong competition with electrical line transmission systems,but also for microwave and millimeter wave radio transmission systems.Although these systems are reasonably wideband the relatively short span “line of sight” transmission necessitates expensive aerial towers at intervals no longer than a few tens of kilometers.Hence optical fiber is fast becoming the dominant transmission medium within the major industrialized societies.
Many advantages are therefore provided by the use of a light-wave carrier within a transmission medium consisting of an optical fiber.The fundamental principles giving rise to these enhanced performance characteristics,together with their practical realization,are described in the follwing chapters.However,a general understanding of the basic nature and properties of light is assumed.
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