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science,math and English

No.247　13/04/27 03:25
名無し0 ( 50代 ♂ ) あ+あ-

【Communication of an optical fiber光ファイバー】

《The amount of no more than a hair of a fiver has the amount of information of no less than 2000 telephones》

The optical fiber is a transparent one made from glass,or plastic.Its structure is the next.😃

Its core of which refractive index 屈折率 is high is covered with a matter of which refractive index is low called clad.😃

The clads are also covered with tiny tube.😃

If putting a section of the optical fiber in the light,without being seen through the core,the light will travel through the core,being refractive.🌟

As a result,data of the light can be reached so distant.The fiber is as thin as a hair,but it can convey information of 2000 telephone circuits.😲

Tying up the dozens of cores,and changing into a cable,so we can exchange enormous data.Besides,signals of the optical fiber is hard to become weak even in a long distance.💮

The optical fiber can stand electrical noise thanks to not being electrical signal.🎊