Abstract
We theoretically propose a broadband optical isolator based on second-harmonic generation in a one-dimensional quadratic nonlinear photonic crystal (NPC) with an embedded defect. An external electric field along the z axis is applied to modulate the NPC refractive index periodically. Complete optical isolation always could be reached with the help of an external field. Influences of the defect position and thickness are discussed. The spectral and power tolerances of the isolator also have been investigated and show high contrast within a wide wavelength range at different power levels.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
Qin Wang, Fei Xu, Zi-yan Yu, Xiao-shi Qian, Xi-kui Hu, Yan-qing Lu, and Hui-Tian Wang
Opt. Express 18(7) 7340-7346 (2010)
Fei Xu, Jun Liao, Cheng-Shan Guo, Jing-Liang He, Hui-Tian Wang, S. N. Zhu, Zhenlin Wang, Y. Y. Zhu, and N. B. Ming
Opt. Lett. 28(6) 429-431 (2003)
Mingjun Gong, Yuping Chen, Feng Lu, and Xianfeng Chen
Opt. Lett. 35(16) 2672-2674 (2010)