We propose an ultra-simple dual-channel configuration for simultaneously evaluating two branches of a multifunctional integrated optic chip(MFIOC). In the configuration, the MFIOC is employed as a beam splitter to con...We propose an ultra-simple dual-channel configuration for simultaneously evaluating two branches of a multifunctional integrated optic chip(MFIOC). In the configuration, the MFIOC is employed as a beam splitter to construct the demodulation interferometer together with a 2 × 2 fiber coupler. Interference happens between polarization modes traveling through different channels of the MFIOC. The cross-couplings of each channel are respectively characterized by the interference peaks which distribute on opposite sides of the central interference peak. Temperature responses of the MFIOC are experimentally measured from-40°C to 80°C. Results show that the proposed configuration can achieve simultaneous dual-channel transient measurements with resolution of-90 d B and dynamic range of 90 d B. In addition, the two channels of the configuration have consistent measuring performance, and the two branches of the MFIOC have different responses to temperature variation.展开更多
DPA(Differential Power Analysis)攻击的强度取决于芯片电路功耗与所处理的数据之间的相关性以及攻击者对算法电路实现细节的了解程度.本文结合动态差分逻辑和可配置逻辑的特点,提出了一种具有抗DPA攻击能力的双端输出可配置逻辑(DRCL:...DPA(Differential Power Analysis)攻击的强度取决于芯片电路功耗与所处理的数据之间的相关性以及攻击者对算法电路实现细节的了解程度.本文结合动态差分逻辑和可配置逻辑的特点,提出了一种具有抗DPA攻击能力的双端输出可配置逻辑(DRCL:Dual-Rail Configurable Logic).该逻辑一方面具有与数据取值无关的信号翻转率和信号翻转时刻,因而能够实现很好的功耗恒定特性;另一方面去除了电路结构与电路功能之间的相关性,从而可以阻止攻击者通过版图逆向分析的方法窃取算法电路实现细节.实验结果表明,DRCL比典型的抗DPA攻击逻辑WDDL(Wave Dynamic Differential Logic)具有更好的功耗恒定性,因而具有更强的DPA攻击防护性能.展开更多
基金the National Natural Science Foundation of China (Grants Nos. 61227013, 61307104,61422505)the Program for New Century Excellent Talents in University (NCET-12-0623)+2 种基金the National Key Scientific Instrument and Equipment Development Project (No. 2013YQ040815)the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20122304110022)the Heilongjiang Provincial Natural Science Foundation (No. ZD201205)
文摘We propose an ultra-simple dual-channel configuration for simultaneously evaluating two branches of a multifunctional integrated optic chip(MFIOC). In the configuration, the MFIOC is employed as a beam splitter to construct the demodulation interferometer together with a 2 × 2 fiber coupler. Interference happens between polarization modes traveling through different channels of the MFIOC. The cross-couplings of each channel are respectively characterized by the interference peaks which distribute on opposite sides of the central interference peak. Temperature responses of the MFIOC are experimentally measured from-40°C to 80°C. Results show that the proposed configuration can achieve simultaneous dual-channel transient measurements with resolution of-90 d B and dynamic range of 90 d B. In addition, the two channels of the configuration have consistent measuring performance, and the two branches of the MFIOC have different responses to temperature variation.
