Papers by Author: Dong Guang Li

Abstract: With development of MEMS pyrotechnics devices such as semiconductor bridge/metal bridges, the energy required to fuze ignition becomes smaller and smaller. The energy needed for traditional short-circuit is far greater than MEMS pyrotechnics devices explosive, and takes a large space of fuze, which does not accord with the smaller trend in fuse volume and ignition energy. This paper describes a MEMS short-circuit fuse based on electro-thermal theory, it has similar volume with MEMS pyrotechnics devices, and the energy required is less than the traditional shorts fuse. This short-circuit fuse has well safety features, short action time, small volume, low cost, and it is suitable to be used in fuse or other areas .

Abstract: Laser light beam transmit efficiency and accuracy in atmosphere channel is important parts in space laser communication system. The atmosphere channel effects to laser light beam mainly have two aspects, atmospheric attenuation and atmospheric turbulence. After doing related experiments, we figure that the speed of wind has little effect to atmospheric turbulence and the altitude is portional to structure parameter. And bad weather has much influence with energy transmission efficiency. In practical situation, we should consider two ways working at the same time refer to our conclusions.