Six high-index cores are embedded around the central solid core of the photonic crystal fiber to form a fiber embedded photonic crystal fiber (FEPCF), which is investigated based on the beam propagation method. In this structure, the Gaussian mode could be transferred to the ring mode. So FEPCF could used as a mode convertor.
© 2009 Chinese Optics Letters
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.3990) Optical devices : Micro-optical devices
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
Weimin Sun, Xiaoqi Liu, Quan Chai, Jianzhong Zhang, Fenghua Fu, Yu Jiang, and Tim A. Birks, "Mode field converter based on embedded photonic crystal fiber," Chin. Opt. Lett. 7, 921-923 (2009)