Vertically coupled optical resonator devices over

专利名称：Vertically coupled optical resonator devices

over a cross-grid waveguide architecture

发明人：Brent E. Little,Wugen Pan,Yasuo Kokubun,Sai

T. Chu

申请号：US09510432申请日：20000222公开号：US06411752B1公开日：20020625

专利附图：

摘要：Optical resonators are vertically coupled on top of bus waveguides, and areseparated from the waveguides by a buffer layer of arbitrary thickness. The vertical

arrangement eliminates the need for etching fine gaps to separate the rings and guides,and reduces the alignment sensitivity between the desired position of the resonator andbus waveguides by a significant degree. The resonator and bus waveguides lie in differentvertical layers, and each can therefore be optimized independently. A ring resonator canbe optimized for higher index contrast in the plane, small size, and low bending loss,while the bus waveguides can be designed to have lower index contrast in the plane, lowpropagation losses, and dimensions that make them suitable for matching to opticalfibers. The waveguides can also have any lateral placement underneath the ringresonators and are not restricted by the placement of the rings. Furthermore, with theresonators lying on the top layer of the structure, they are easily accessed for tuning andtrimming.

申请人：MASSACHUSETTS INSTITUTE OF TECHNOLOGY

代理机构：Samuels, Gauthier & Stevens, LLP

更多信息请下载全文后查看