Based on two-step coordinate transformation along the radial direction, an optical device with three functions is proposed. The proposed device functions as a transparent device, a vision-enabling internal cloak, and a movement-allowing external cloak. The general expressions of material parameters for the optical device are determined, and each function of the device is confirmed using full-wave simulation. The effect of material loss on device performance is also investigated. Future applications for the proposed device include antenna protection and military stealth.
© 2013 Chinese Optics Letters
Tinghua Li, Ming Huang, Jingjing Yang, Yun Feng, and Yan Liang, "Design of an optical device with three functions based on coordinate transformation," Chin. Opt. Lett. 11, 091602- (2013)