The principle and experimental results of all-fibre optical heterodyne sys-tem, in which ordinary singlemode fibres are used, are presented.
本文介绍了由普通单模光纤构成的全光纤光外差检测系统的基本原理和实验研究结果。
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Condition for singlemode operation of DBR fibre laser is given based on rate equations theory. We apply it to the design by analyzing characteristics of grating reflectivity and some approximation.