Abstract

We propose novel polarization splitters based on photonic crystal fibers (PCFs), in which the cores of the splitters are nearly nonbirefringent. Different from conventional fiber-based polarization splitters, the birefringence in the new splitters results mainly from narrow silica regions physically connecting the two cores. This means that polarization splitting can be achieved without employing highly birefringent cores, which provides a possibility to greatly simplify the structures of the PCF-based polarization splitters and make them more practical. A 5-mm-long splitter with an extinction ratio of 20 dB has been obtained. We also discuss how the silica regions influence coupling characteristics of the dual-core PCFs and present a design guidance for the polarization splitters based on polarization-dependent coupling.

© 2005 IEEE

Polarization splitter based on photonic crystal fibers

Lin Zhang and Changxi Yang
Opt. Express 11(9) 1015-1020 (2003)

Polarization splitter in three-core photonic crystal fibers

K. Saitoh, Y. Sato, and M. Koshiba
Opt. Express 12(17) 3940-3946 (2004)

Polarization splitter based on a square-lattice photonic-crystal fiber

Lorenzo Rosa, Federica Poli, Matteo Foroni, Annamaria Cucinotta, and Stefano Selleri
Opt. Lett. 31(4) 441-443 (2006)

Ultra-short polarization beam splitter based on rhombic structure dual-core photonic crystal fiber with a central hole filled nematic liquid crystal

Yanan Xu, Jinhui Yuan, Yuwei Qu, Shi Qiu, Xian Zhou, Binbin Yan, Kuiru Wang, Xinzhu Sang, and Chongxiu Yu
J. Opt. Soc. Am. B 40(1) 206-214 (2023)

Polarization splitter based on dual-core photonic crystal fiber

Haiming Jiang, Erlei Wang, Jing Zhang, Lei Hu, Qiuping Mao, Qian Li, and Kang Xie
Opt. Express 22(25) 30461-30466 (2014)