A channel drop filter in hetero-woodpile-structure |
| |
Authors: | Dandan Zhang Zhifang Feng M Yasin Akhtar Raja |
| |
Institution: | 1. Beijing University of Chemical Technology, Beijing 100029, China;2. Center for Optoelectronics & Optical Communications, The University of North Carolina at Charlotte, NC 28223, United States |
| |
Abstract: | By finite difference time domain method, a channel drop filter with four-port is designed, analyzed, and theoretically simulated in the hetero-woodpile-structure. Hetero-woodpile-structure includes three parts namely, along the propagation direction, the constant lattice in the core woodpile is different from two cladding woodpiles. This channel drop filter is comprised of two straight waveguides separated by an air-cavity in the same layer. Through simulations, we found that adjustment of the resonant-mode in heterostructure can be achieved in various ways, such as only changing the lattice constants, or changing both lattice constants, and the cavity size. The results also show that this structure can realize the energy transfer between bus and drop waveguides. |
| |
Keywords: | Woodpile structure Hetero-structure Channel drop filters Constant lattices |
本文献已被 ScienceDirect 等数据库收录! |
|