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fiber transmission capacity, thus promoting the study of optical fiber manufacturing process. DuPont DuPont is also the year the pany launched the world39。熒光POF還有另一種傳光方式,這就是入射光可從側(cè)面照射熒光POF,出射光從光纖兩端面出射,當(dāng)然入射光的波長(zhǎng)不同于出射光的傳輸波長(zhǎng)。常規(guī)POF一般在紫外光波段并沒(méi)有很好的透光性,而石英光纖和特制的液芯光纖在這一區(qū)域有很好的透光率,POF在可見(jiàn)光區(qū)域有很好的透光率,由POF芯材選用氟化和氘化聚合物材料制備的POF在近紅外光區(qū)域才有很好的透光率。美國(guó)杜邦DuPont公司亦在這一年向市場(chǎng)推出了世界上第一根POF[1],POF就是光纖的一種,而光纖用于光纖照明的基本原理是利用光線在不同折射率介質(zhì)的界面發(fā)生全反射,實(shí)現(xiàn)光在光纖中的高效傳輸以及光纖與光源的充分耦合,并通過(guò)與各種光學(xué)元件的組合,達(dá)到需要的照明效果,為了解光在光纖中的傳輸方式,現(xiàn)介紹子午光線在POF中的傳輸特性。 塑料光纖傳光原理通信 塑料光纖傳光原理通信1. 前言光纖自身不能發(fā)光,但光纖可以傳光,用于照明;光纖照明所選用的光纖,按照光纖材質(zhì)的不同,通??煞譃槭⒐饫w、多組分玻璃光纖和塑料光纖POF等,本文主要介紹POF的傳光原理,其它的光纖傳光原理同POF的傳光原理是一致的。s 和Kapany成功地用一束10,000到20,000 的纖維來(lái)傳輸圖像的文章,Van Heel發(fā)現(xiàn)低折射率光纖包層的作用,纖維的圖像傳輸?shù)某晒?shí)現(xiàn)和光纖包層的提出這兩個(gè)進(jìn)步標(biāo)志著光導(dǎo)纖維作為一個(gè)新興學(xué)科的誕生, 1966年,英國(guó)標(biāo)準(zhǔn)電信研究所英籍華裔科學(xué)家高錕() 在詳細(xì)研究了玻璃的傳輸損耗后,撰寫(xiě)的文章《用于光頻的介質(zhì)纖維表面波導(dǎo)》發(fā)表在倫敦電氣工程師協(xié)會(huì)(IEE)會(huì)刊上,他們從理論上指出:如果減少或消除光導(dǎo)纖維中的有害雜質(zhì)如過(guò)渡金屬離子,可大大降低光纖傳輸損耗, 提高光纖的傳光能力,從而推動(dòng)了光纖制造工藝的研究。而可見(jiàn)光又是由七色光組成的,即可見(jiàn)光含有紅色光、橙色光、黃色光、綠色光、藍(lán)色光和靛青光等色光國(guó)際照明委員會(huì)統(tǒng)一規(guī)定的標(biāo)準(zhǔn)是:選水銀光譜中波長(zhǎng)為700nm的紅光為紅基色光, , 。熒光POF的傳光原理示意圖如下,它滿足一般的SI 型光纖的傳光特性,但入射光的波長(zhǎng)不同于出射光的波長(zhǎng)。s side of the hole out, when the light is projected on the water with the water transfer out. In 1880, William ? Wheeler that light pipe scenario, and the . patent, which is the earliest documented remote lighting device, whose basic principle is: the inner wall coated with a reflective layer center of the tube to the same light source as tap water lead to a number of locations the need for lighting, which is actually the prototype of fiber used for lighting, fiber optic lighting systems can be seen as a simple and above pipeline system similar to a system, in this system, the transmission medium is light, and to transmit light of the pipeline is the optical fiber, optical fiber can transmit light from the light source to the need for lighting a specific area. 1954, Nature magazine published a Hopkin39。 the same time to simplify the calculation, the parameters used for calculation of Meridian, Meridian is the propagation path of light through the optical axis and is always in the same plane, the calculation of these parameters include the maximum angle of incidence or emission angle, numerical aperture, In the steptype fiber radial geometry and reflection travel times。 390760nm band of light to visible light。POF之以能傳光是因?yàn)?