Single channel fiber optic rotary joint has simple structure, small size and low optical losses, but the unidirectionaltransmission limits its wide applications.
After the method and the system in the embodiment of invention are adopted, the safety of a quasi-unidirectionaltransmission 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。
3
Finally, we investigate the unidirectionaltransmission behavior of PC molecules consisting of nonlinear defect pairs by use of the coupled mode theory and the finite-difference time-domain technique.