在集成光学领域, 光波长分裂器对于光信号重新分配具有重要作用。设计了一种光波长分离器, 这种器件可以把波长为1.31 μm和1.55 μm光的TE模式分裂开。该器件基于两个平行铌酸锂光子线的定向耦合器的工作原理, 并且可以用有限元法设计和仿真。计算稳态场分布表明, 波长为1.31 μm与1.55 μm的光波在空间上可以分离开。并且, 1.31 μm波的透射率可以达到91%, 1.55 μm波的透射率可以达到86%。该器件的尺寸只有26.2 μm×10.1 μm。

In the field of integrated optics, optical wavelength splitters is a key element in light signal redistribution. A optical wavelength splitter was presented for 1.31 μm and 1.55 μm wavelengths with TE mode. The device was based on the operating principle of a directional coupler in two parallel LiNbO3 photonic wire, and can be designed and simulated by finite element method. The calculated steady-state field distributions indicate that the wavelengths of 1.31 μm and 1.55 μm light waves are spatially separated. In this device, transmittances at the 1.31 and 1.55 μm wavelength are 91% and 86% respectively. The size of this device is only 26.2 μm×10.1 μm.