Research Information System
PhotonIcs and Electromagnetics Research Symposium - Spring (PIERS-Spring), Rome, Italy, 17 - 20 June 2019, pp.91-99, (Full Text)
We present rigorous optimization and design of efficient couplers to improve optical transmission along nanowires. It is well-known that nanowires are excellent tools to transmit electromagnetic power in nano-optical systems, while couplers become inevitable at critical locations, particularly in input/output regions and at corners if nanowires are bended. We use genetic algorithms supported by fast full-wave solutions to efficiently and accurately obtain effective couplers in alternative scenarios. The designed couplers are investigated in detail, such as in terms of grid size and frequency, while we consider various cases of nanowire configurations. Usage of multiple couplers and their integration on the same transmission lines are also studied. The results are interpreted to reach conclusions and guidelines on the design of effective couplers for complex nanowire networks and nano-optical links.