A novel resonant cavity enhanced photodetector with flat-top and steep-edge response

A novel resonant cavity enhanced (RCE) photodetector with flat-top and steep-edge response is presented. The response is obtained by designing a gradient-thickness P area in the absorption cavity. Simulation results show that the maximum and minimum values of the quantum efficiency in bandpass are 85.242% and 87.564% respectively, the ripple is about 3.6%, and 0.5 dB, 3 dB and 20 dB bandwidths are 0.3 nm, 0.4 nm and 1.2 nm, respectively. The mesa area is 10 μm × 10 μm and the frequency response bandwidth is 87 GHz. Compared with similar photodetectors, this photodetector has high quantum efficiency, narrow spectral response linewidth, good flat-top and steep-edge response and ideal high-speed characteristics.     

云服务认证浅析

介绍了云计算背景下云服务的应用情况以及企业对实施云服务解决方案的担忧,并由此引出了云服务认证的概念;总结了云服务认证的优势以及遵循认证标准所带来的挑战;提出了一些进行云服务认证的监测和评估方法。