The purchase management of laser pointer is in the list

 The purchase management of laser pointer is in the list.
DFB lasers; 1981 developed by Utaka et al. SPin InGaA. P DFB lasers. Many scholars of DFB lasers for a good theoretical analysis. In this follow the the Streifer by the theoretical work. It should be said that his work with the Ge Nike used the coupled-wave theory is closer, but closer to the actual. DPB structure shown in Figure 1, one end of the cleavage plane, the other end of the cleavage surface plated antireflection coating. Propagating waves in the DFB in the analysis can be divided into forward traveling wave (abbreviated as the R wave) and reverse traveling wave (abbreviated as S waves, as shown in Figure 2, these two waves in the opposite process of moving along the cycle Bragg grating scattering point of mutual coupling occurs. The purchase and supply management of laser pointer aims at getting the commodity. 
Clouds and rain in the upstream and downstream communication link dispersion and attenuation. NASA to encourage industry participation in the development of laser satellite communications technologies, has entered into two contracts with industry, the tasks include estimating future space laser satellite communications market, the development of laser satellite communications plan (including a public space and launch vehicles) of the satellite, and developed a laser satellite communications program. The purpose of the two contracts is the development of laser satellite communications market, and is ready for commercial satellite communications network in the future. NASA also some key technologies of the free-space laser communication and presentation system at the same time, the main light communication demonstration system of OCD (Optical Communication Demonstration), air-to-ground demonstration system, TOPSAT (TOP graphical mapping Satellite) system, atmospheric visibility monitoring Program (AVMP). The organizing of laser pointer should be considered.
Star by the user - the relay satellite - ground station link to return to the communication link (Return Link, RL), divided into the same return to the track link and return link to the feed. 8 data relay satellite technology - the inter-orbit laser communication links (ISLs IOL) refers to the communication link between the user satellite and the relay satellite, the S / Ka dual-band, S band is mainly used for user satellite TT & C and transmission low-speed data, Ka-band for high-speed data transmission. Feed link refers to the relay satellite and ground station communication link working at Ka-band. The client should make the best choice of laser pointer .