9 April 2018 Ultrashort polarization splitter based on dual-core photonic crystal fibers with gold wire
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Abstract
An ultrashort polarization splitter based on dual-core photonic crystal fibers with gold wire has been proposed. Based on the beam propagation method with anisotropic perfectly matched layers, its polarization splitter coupling length, coupling length ratio, extinction ratio (ER), and bandwidth are numerically investigated. When the gold thread is filled in the fiber, the surface of the gold wire will produce the surface plasmon polaritons, which has certain influence on the beam propagation. A polarization splitter with shorter length and greater working bandwidth can be obtained by filling the gold wire. Numerical results demonstrate that the polarization splitter possesses extremely the length of 290  μm and high ER of −56.5  dB at the wavelength of 1.55  μm. Moreover, the polarization splitter is proposed to achieve ER better than −10  dB and a bandwidth of 19.2 nm.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2018/$25.00 © 2018 SPIE
Qiang Xu, Qiang Xu, Ya Zhao, Ya Zhao, Houping Xia, Houping Xia, She-Bao Lin, She-Bao Lin, Yani Zhang, Yani Zhang, "Ultrashort polarization splitter based on dual-core photonic crystal fibers with gold wire," Optical Engineering 57(4), 046104 (9 April 2018). https://doi.org/10.1117/1.OE.57.4.046104
Received: 24 November 2017; Accepted: 22 March 2018; Published: 9 April 2018
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