Design and fabrication of the star coupler based on SOI material

A 1×25 star coupler is designed through calculation and beam propagation method (BPM) simulation. Improvement methods are focused on the design of the tapered waveguides in the device, improving the uniformity of the output light power of the star coupler. Utilizing the conventional Si process technology, the device is fabricated based on silicon-on-insulator (SOI) material. The test result shows that the star coupler has a perfect function of power splitting.     

转动竖直镜面的微机械光开关

提出并制作了转动竖直微镜的微机械光开关，采用曲线形状的电极设计，有效地减低了悬臂梁驱动器的吸合电压，采用体硅深刻蚀技术结合(110)硅的各向异性腐蚀技术制备了光开关芯片和耦合对准的U形槽和卡簧。芯片经初步封装后进行了电学测试和光学测试，测得吸合电压78．5V，谐振频率2．3kHz，光开关损耗5dB，隔离度45dB。