Project supported by the National Key R&D Program of China(Grant No.2020YFB1805701);the National Natural Foundation of China(Grant Nos.61934003,61635010,and 61674136);Beijing Natural Science Foundation,China(Grant No.4194093)。
We have realized integration of evanescent wave coupled photodetector(ECPD)and multi-quantum well(MQW)semiconductor optical amplifier(SOA)on MOCVD platform by investigating butt-joint regrowth method of thick InP/InGa...
Ph.D.Programs Foundation of Ministry of Education of China under Grant No.20040145019
The transverse spin-2 Ising ferromagnetic model with a longitudinal crystal field is studied within themean-field theory.The phase diagrams and magnetization curves are obtained by diagonalizing the Hamiltonian H_i of...
A novel two-way rotary joint (S and P band) is described. For S band rotary joint,VSWR is less than 1.2 over the frequency range from 1.2GHz to 4.4GHz. For P band rotary joint,the structure of the reentrant resonator ...