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。
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。
It demonstrates that optical remote sensing of inflammable, explosive and pollution gas such as CH_4 is possible by using extremely low loss optical fiber.
也证明了利用超低损耗光纤远距离传感有害，有毒，易爆气体(如CH_4)的可能性。
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