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Single channel fiber optic rotary joint has simple structure, small size and low optical losses, but the unidirectional transmission limits its wide applications.
单通道光纤旋转连接器具有结构简单、重量轻和耦合损耗小的优点，但传输信号单一，不能双向传输的缺点限制了它的广泛应用。
After the method and the system in the embodiment of invention are adopted, the safety of a quasi-unidirectional transmission system is ensured and network safety is further ensured.
采用本发明实施例的方法和系统，可对“准单向传输系统”提供安全性保障，进一步保障了网络安全。
Finally, we investigate the unidirectional transmission behavior of PC molecules consisting of nonlinear defect pairs by use of the coupled mode theory and the finite-difference time-domain technique.
最后，我们利用耦合模理论和有限时域差分技术研究了非线性缺陷对构成的光子晶体分子的单向导通行为。
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