System and method for integrating optical layers in a PCB for inter-board communications,申请号US20060375320-传众专利搜索

System and method for integrating optical layers in a PCB for inter-board communications

申请公布号：US2006165345(A1)

申请号：US20060375320

申请日期：2006.03.14

申请公布日期：2006.07.27

发明人：TOURNE' JOSEPH A.

分类号：G02B6/12;B29D11/00;G02B6/00;G02B6/10;G02B6/26;G02B6/42;H01L21/00

主分类号：G02B6/12

摘要：Polymers of differing refraction indices are embedded within a PCB to provide optical connectivity of the PCB with other circuit boards via an optic backplane. The creation of islands of polymer material of refractive index n1 completely surrounded by polymer material with refractive index n2 where n1 has a higher index than n2 allows the islands of n1 indexed polymer to serve as optical waveguides. A process of forming a multi-layered PCB with the optical waveguide islands using successive laminations and using laser ablation to write the optical connection scheme is taught. Further, the use of uniquely marked targets in a copper layer to align the optical waveguides in production is also taught. Additionally, the use of clearing polymer materials and reinforcing polymer voids with lamination to allow a simple, high tolerance insertion of through-holes is taught.