Broadband Circular Polarizer Based on Chiral Fiber Grating
Based on the adiabatic coupling principle, a new scheme of a broadband circular polarizer formed by twisting a high-birefringence (Hi-Bi) fiber with a slowly varying twist rate is proposed. The conditions of adiabatic coupling for the adiabatic polarizer are identified through analytical derivations for the first time. The key design procedure is then suggested for achieving the required performance specifications such as the bandwidth and extinction ratio of the polarizer. The dependencies of the performance on structure parameters such as length and birefringence of the twisted fiber is discussed by simulations, and the broadband characteristics of the proposed polarizer are successfully demonstrated.
Li Yang Cheng Li Jue Su Jing-Ren Qian
Department of Electronic Engineering and Information Science University of Science and Technology of China, Hefei, Anhui, P R China
国际会议
2010 International Conference on Communications,Circuits and Systems(2010年通信、电路与系统国际会议)
成都
英文
650-653
2010-06-28(万方平台首次上网日期,不代表论文的发表时间)