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Zhou L.,Wuhan Commanding Communications Academy | Wen C.,Nanjng Army Command College Operation Laboratory Center | Zha R.,PLA 2115 Troops
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings | Year: 2011

A bistable model is established including the effect of spontaneous emission in a VCSOA. The sensitivities to the ASE of the bistable characteristics in a VCSOA and a traditional edge emitting SOA are compared by numerical analysis. © 2011 IEEE.


Zhou L.,Wuhan Commanding Communications Academy | Wen C.,Najing Army Command College Operation Laboratory Center | Zha R.,PLA 2115 Troops
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings | Year: 2011

A method is proposed to optimize the coupling differential equation of multiwave pumped fiber Raman amplifier and to solve the boundary problem of backward pump based on small signal theory. And, a genetic algorithm is used to approach the flatness of signal gain and noise spectra simultaneously. © 2011 IEEE.


Wang J.,Wuhan Polytechnic University | Lin Z.,Wuhan Commanding Communications Academy | Sun L.,Wuhan Commanding Communications Academy
Proceedings - 2010 IEEE International Conference on Intelligent Computing and Intelligent Systems, ICIS 2010 | Year: 2010

Policy-based security technology is getting more and more attention. But the description method about policy is not very well because most of its description methods are defined for particular application, and can not be used widely. Point to this, a formal definition for general policy is proposed. Furthermore, an XML-based description rule for the general security policy is defined. Some description samples about the method are provided by depicting RBAC and BLP's security rules. By regulating the system's subject, target, action, constraint condition and their logic relationship in policy, the description rule is very accurate and easy to be used. This description method is of benefit for policy's logic reasoning and conflict detection. ©2010 IEEE.

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