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当代电信的载体是光导纤维传输系统,但它并不能完全均匀地放大光波的不同波长,因而很可能造成信号传输失误。美国科学家罗伯特·温德勒为现在普遍使用的光导纤维电缆提供了一个简便易行的改进方案:向光导纤维里添加液体。 温德勒和他在美国新泽西州的OFS实验室及朗讯技术公司贝尔实验室的同事们开发出一种充满液体的纤维,这种改进后的纤维在一个实芯周围有一圈孔洞。他们把少量液体注入孔中,然后将两端封闭。通过给液体加热,可改变那些波长通过实芯传输时出现耗散的现象,从而有可能针对任何失去平衡的信号及时进行调整。只要在纤维内部把一股液体推到一个新位置就可调整传输信号的强度,或将信号全部关闭。温德勒说:“这一设计将使通信业得以增添更多的频道,并能在更长距离上传送信号。”这意味着更大的通信容量和更低的通信成本。
The carrier of contemporary telecommunications is an optical fiber transmission system, but it does not amplify the different wavelengths of the light waves completely and evenly, and therefore may cause signal transmission errors. American scientist Robert Windler offers an easy-to-use solution for fiber optic cables commonly used today: adding liquid to optical fiber. Windler and his colleagues at OFS Laboratories in New Jersey and Bell Labs at Lucent Technologies have developed a fluid-filled fiber that has a circle of holes around a solid core. They inject a small amount of liquid into the hole and then close both ends. By heating the liquid, the dissipation of those wavelengths propagating through the solid core can be changed, making it possible to adjust for any out-of-balance signal in time. As long as a liquid inside the fiber is pushed to a new position, the intensity of the transmitted signal can be adjusted or the signal can be switched off completely. “This design will allow the communications industry to add more channels and transmit signals over longer distances,” said Windeler. "This means greater communications capacity and lower communications costs.