纤维光学经常被称道的一个优点是可抗窃听。之所以有这种保密性,是由于与电传输中较为直接的窃听比起来,难以在光纤中分接中间抽头。如今为了满足更为保密的需要,TRW技术研究中心的研究人员已经发明了一种方法,即使光纤被分接也 One of the advantages that fiber optics is often credited is that it can be resistant to eavesdropping. The reason for this confidentiality is that it is difficult to tap the center tap in the fiber as compared to the more direct eavesdropping in electrical transmission. Now to meet the need for greater confidentiality, researchers at the TRW Technology Research Center have invented a method that allows fiber to be tapped