An optical 90° hybrid based on an InP 4 × 4 multimode interference (MMI) coupler is designed and fabricated for the application in a coherent receiver.It reve
We investigate the optical Kerr effect of SrTiO3 (STO) crystal,of which the nonlinear response time was measured to be less than 200fs,while the nonlinear refra
We demonstrate an experimental setup of a tunable ultrafast laser source ty sum-frequency generation (SFG)between a mode-locking Ti:sapphire laser and a Nd:YVO4
The method of multiple time scales is used to obtain the asymptotic solutions to the planar and non-planar flows into a non-ideal gas.The transport equations fo
We theoretically and experimentally study the cavity modes in a gyromagnetic photonic crystal (GPC).Because the permeability of gyromagnetic material relies on