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。

The invention of semiconductor lasers and detectors, low-loss optical fiber and, later, optical amplifiers, made long-distance data transport feasible.

youdao

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。

The invention of semiconductor lasers and detectors, low-loss optical fiber and, later, optical amplifiers, made long-distance data transport feasible.

youdao