The annealed proton-exchanged LiNbO3 Y-branch optical waveguide with a tapered transitional section is simulated by the three-dimensional finite difference beam propagation method.

• 利用三维有限差分光束传播法，对具有锥形过渡波导的退火质子交换铌酸锂Y分支光波导进行了数值模拟。