The invention of semiconductor lasers and detectors, low-loss optical fiber and, later, optical amplifiers, made long-distance data transport feasible.
半导体激光器和检测器、低损耗光纤，以及后来的光放大器的发明使得长距离传输成为现实。
However, it is understood that methods and apparatus for fiber break detection can be used with standard and low-loss optical fiber spans.
然而，可以理解的是用于光纤中断检测的方法和装置可以利用标准的和低损耗的光纤段。
In one embodiment of the invention, the optical fiber span 206 is a high loss optical fiber span with an optical loss that is greater than about 32 dB.
在本发明的一个实施例中，光纤段206是具有大于大约32db的光纤损耗的高损耗光纤段。
In one embodiment of the invention, the optical fiber span 206 is a high loss optical fiber span with an optical loss that is greater than about 32 dB.
在本发明的一个实施例中，光纤段206是具有大于大约32db的光纤损耗的高损耗光纤段。
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