کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1534431 | 1512592 | 2014 | 4 صفحه PDF | دانلود رایگان |
A modified structure of photonic crystal fiber (PCF) with gold-filled air holes is presented in this paper. It consists of two kinds of air holes, one part is arrayed in a regular triangular lattice and the other part is arrayed in a rectangular lattice with different hole pitches in x-pol and y-pol, respectively, which can enhance the birefringence of the PCF and the 1st order surface plasmon polariton (SPP) mode can also be separated by a large distance. The polarization filter is based on the phenomenon of surface plasmon resonance (SPR). Numerical simulations with a full vectorial finite element method demonstrate that the resonance peaks occur at different wavelengths in two orthogonal polarization states. It is possible to obtain a resonance strength as high as 407 dB/cm at the communication wavelength of 1550 nm in y-polarized direction while the loss is very low in x-polarized direction. This makes it a promising candidate for polarization filter devices.
Journal: Optics Communications - Volume 331, 15 November 2014, Pages 316–319