Abstract

We propose a novel kind of polarization splitter in all-solid photonic crystal fibers based on the mode interference effects. Both the full-vector finite-element method and the semi-vector three-dimensional beam propagation method are employed to design and analyze the characteristics of the splitter. Numerical simulations show that x-polarized and y-polarized modes are split entirely along with $6.8\mathrm{mm}$ long propagation. An extinction ratio of more than $20\mathrm{dB}$ and a crosstalk of less than $-20\mathrm{dB}$ are obtained within the wavelength range of $1.541–1.556\mathrm{\mu m}$. The extinction ratio and the crosstalk at $1.55\mathrm{\mu m}$ are 28.9 and $-29.0\mathrm{dB}$ for x polarization, while the extinction ratio and the crosstalk at $1.55\mathrm{\mu m}$ are 29.9 and $-29.8\mathrm{dB}$ for y polarization, respectively.

© 2010 Optical Society of America

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