A novel polarization splitter based on octagonal dualcore photonic crystal fiber

Abstract

A novel polarization splitter based on octagonal dual-core photonic crystal fiber (O-D-PCF) is proposed. The impacts of several fiber parameters on the coupling characteristics of the polarization splitter are investigated by full-vectorial finite element method (FV-FEM) in detail. Through optimizing the fiber configuration, a 4.267-mm-long polarization splitter with a bandwidth of 37 nm is achieved, and its extinction ratio (ER) is as high as 81.2 dB at the wavelength of 1.55 μm. Compared with the hexagonal dual-core photonic crystal fiber (H-D-PCF) based polarization splitter, both ER and bandwidth of the O-D-PCF based one are effectively improved.

References

[1] SaitohK., SatoY., KoshibaM.. Opt. Express, 2004, 12: 3940

[2] RosaL., PoliF., ForoniM., CucinottaA., SelleriS.. Optics Letters, 2006, 31: 441

[3] LuW., LouS., WangX., WangL., FengR.. Applied Optics, 2013, 52: 449

[4] ZhangZ., TsujiY., EguchiM.. Journal of Lightwave Technology, 2014, 32: 3956

[5] JiangH., WangE., ZhangJ., HuL., MaoQ., LiQ., XieK.. Opt. Express, 2014, 22: 30461

[6] LiuS., LiS. H., DuY.. Optics & Laser Technology, 2012, 44: 1813

[7] ChenM. Y., SunB., ZhangY. K., FuX. X.. Applied Optics, 2010, 49: 3042

[8] LiJ., WangJ., WangR., LiuY.. Optics & Laser Technology, 2011, 43: 795

[9] MalitsonI.. Journal of the Optical Society of America, 1965, 55: 1205

[10] ForberR. A., MaromE.. IEEE Journal of Quantum Electronics, 1986, 22: 911

[11] LouS., TangZ., WangL.. Applied Optics, 2011, 50: 2016

This work has been supported by the National Natural Science Foundation of China (No.61405096).