英翻中翻译_英翻中_英翻中语音(28)

直到最近人们仅仅能够沿着每根光纤传输一个波长（或一种颜色）的光。研究的精力主要集中在如何使这个单一波长所传输的信息量达到最大化。//

但是DWDM 技术却能够在一根光纤上传输大量的波长，可以有效地传送一个―彩虹‖，而在以前只能传送一种颜色。//

假如我们把光纤比作通向一座城市的拥挤的高速公路，那么就如同我们在高速公路的两端各一个盒子，然后沿着高速公路再加一些额外的设备，于是忽然间高速公路就好像加多了几层， 使得车辆可以在许多相同的道路中做出选择。//

The situation in today‘s networks is in many cases very much like an 25

overcrowded highway. An increasing number of telephone users, as well as new services such as the Internet, have led to a massive explosion in the growth of information traffic.

// DWDM is a cost-effective and reliable way to meet this growing demand. Transmission capacity of commercially available systems has reached 400 Gigabits (400,000,000,000 bits) per second on a single optical fiber. That‘s equivalent to about 4 million telephone conversations. (Considering that Guangdong has about 16 million telephone users, this means that the entire traffic could be handled by four fibers.) //

Future systems will provide multiples of this capacity. With so many people being able to share a single fiber, the charges for the individual will drop drastically. In effect, we are pushing capacity towards infinity and dropping costs to close to zero. //

今天的网络在许多情形下非常类似于一条拥挤的高速公路。日益增加的电话用户以及像因特网这样的新服务式地大大增加了信息交通。//

DWDM 在满足这方面的需求既省钱又可靠，单一光纤的商业传输能力已经达到每秒四百吉(咖)比特。这就相当于四百万个电话对话，（考虑到广东省有一千六百万个电话用户，这意味着四根光纤就可以搞定整个信息交通了。）//

未来的系统将大大增加这种能力。由于如此众多的人共享一个单一的光纤，分摊在每个人身上的费用将明显下降。事实上，我们正在无限度地增加这种能力，而且将成本降为零值。//

（1999 年月日第一届广东经济发展国际咨询会，朗讯科技总裁兼首席执行官Richard McGinn 的演讲―The information industry: Embler of Economic Growth‖，节选）

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