5G网络建设和大规模数据中心建设带来了大量光模块需求。在光模块生产制造中,为了保障光模块在环境温度变化情况下能够长时间正常工作,需要检测模块在不同温度下的性能,而进行高低温测试。高低温测试在光模块制造成本中占了很大比重。...5G网络建设和大规模数据中心建设带来了大量光模块需求。在光模块生产制造中,为了保障光模块在环境温度变化情况下能够长时间正常工作,需要检测模块在不同温度下的性能,而进行高低温测试。高低温测试在光模块制造成本中占了很大比重。设计了一种基于半导体制冷器(Thermo Electric Cooler)的光模块高低温测试系统,相较传统基于热流仪的方案,不需要压缩空气,能够大幅降低功耗、噪声和整体成本,且能够实现与热流仪相当的升降温时间。该系统对于节能减排、降低光模块制造成本有重要意义。展开更多
Optical molecular tomography(OMT)is a potential pre-clinical molecular imaging technique with applications in a variety of biomedical areas,which can provide non-invasive quantitative three-dimensional(3D)information ...Optical molecular tomography(OMT)is a potential pre-clinical molecular imaging technique with applications in a variety of biomedical areas,which can provide non-invasive quantitative three-dimensional(3D)information regarding tumor distribution in living animals.The construction of optical transmission models and the application of reconstruction algorithms in traditional model-based reconstruction processes have affected the reconstruction results,resulting in problems such as low accuracy,poor robustness,and long-time consumption.Here,a gates joint locally connected network(GLCN)method is proposed by establishing the mapping relationship between the inside source distribution and the photon density on surface directly,thus avoiding the extra time consumption caused by iteration and the reconstruction errors caused by model inaccuracy.Moreover,gates module was composed of the concatenation and multiplication operators of three different gates.It was embedded into the network aiming at remembering input surface photon density over a period and allowing the network to capture neurons connected to the true source selectively by controlling three different gates.To evaluate the performance of the proposed method,numerical simulations were conducted,whose results demonstrated good performance in terms of reconstruction positioning accuracy and robustness.展开更多
文摘5G网络建设和大规模数据中心建设带来了大量光模块需求。在光模块生产制造中,为了保障光模块在环境温度变化情况下能够长时间正常工作,需要检测模块在不同温度下的性能,而进行高低温测试。高低温测试在光模块制造成本中占了很大比重。设计了一种基于半导体制冷器(Thermo Electric Cooler)的光模块高低温测试系统,相较传统基于热流仪的方案,不需要压缩空气,能够大幅降低功耗、噪声和整体成本,且能够实现与热流仪相当的升降温时间。该系统对于节能减排、降低光模块制造成本有重要意义。
基金supported by the National Natural Science Foundation of China(No.62101439)the Key Research and Development Program of Shaanxi(No.2023-YBSF-289).
文摘Optical molecular tomography(OMT)is a potential pre-clinical molecular imaging technique with applications in a variety of biomedical areas,which can provide non-invasive quantitative three-dimensional(3D)information regarding tumor distribution in living animals.The construction of optical transmission models and the application of reconstruction algorithms in traditional model-based reconstruction processes have affected the reconstruction results,resulting in problems such as low accuracy,poor robustness,and long-time consumption.Here,a gates joint locally connected network(GLCN)method is proposed by establishing the mapping relationship between the inside source distribution and the photon density on surface directly,thus avoiding the extra time consumption caused by iteration and the reconstruction errors caused by model inaccuracy.Moreover,gates module was composed of the concatenation and multiplication operators of three different gates.It was embedded into the network aiming at remembering input surface photon density over a period and allowing the network to capture neurons connected to the true source selectively by controlling three different gates.To evaluate the performance of the proposed method,numerical simulations were conducted,whose results demonstrated good performance in terms of reconstruction positioning accuracy and robustness.
