supported by the National Basic Research Program of China(973 program)under Grant Nos.2014CB340002 and 2014CB340004
A phase-diffractive optical element is designed to measure the topological charge of optical vortices. We use the scalar diffraction theory to calculate the far-field diffraction patterns. The simulation results show ...
supported by the National Natural Science Foundation of China(No.61177076);the Fundamental Research Funds for the Central Universities(Nos.2013-Ia-038 and 2013-Ia-006)
The mode theory is the main way to study the propagation characteristics of light in fiber so far,but it is not suitable for analysis of light in duct.By using ray-tracing method,the rotary propagation characteristics...