Evaluation and design of a large-scale cloaking device by the Hamiltonian-based ray-tracing method. Part II: design of the distribution of constitutive parameters

摘要

Improvement in cloaking performance by the design of distributions of the constitutive parameters is investigated. The distributions are changed by employing Navier's equation with various distributions of Young's modulus as the partial differential equation for the solution of the Jacobian transformation matrix used in transformation optics. The cloaking performance is evaluated by Hamiltonian-based ray tracing. The numerical results show the proposed design method can improve the cloaking performance. The design method can contribute to the realization of large-scale cloaking devices by taking account of the finite resolution of the manufacture. (C) 2017 Optical Society of America