20 July 2017 Tunable polarization filter based on high-birefringence photonic crystal fiber filled with silver wires
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Abstract
A tunable single polarization filter based on high-birefringence photonic crystal fiber with silver wires symmetrically filled into cladding air holes is designed. The confinement loss of the unwanted polarized mode (x-polarized mode) at 1310- and 1550-nm bands are 371 and 252  dB/cm, whereas another mode confinement loss (y-polarized mode) at the corresponding wavelength as low as 14 and 10  dB/cm, respectively. Moreover, the 20-dB bandwidth can reach 179 (at the 1310-nm band) and 71 nm (at the 1550-nm band) for a propagation distance of 1 mm. The dispersion relations and polarization characteristics are analyzed in detail utilizing the finite element method. Numerical results show that by adjusting the pitch between two adjacent air holes, the diameters of cladding air holes or silver wires near the fiber core, the resonance wavelength and resonance strength can be tuned effectively, which is beneficial for tunable polarization filter devices in the communication wave bands.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xianchao Yang, Xianchao Yang, Ying Lu, Ying Lu, Baolin Liu, Baolin Liu, Jianquan Yao, Jianquan Yao, } "Tunable polarization filter based on high-birefringence photonic crystal fiber filled with silver wires," Optical Engineering 56(7), 077108 (20 July 2017). https://doi.org/10.1117/1.OE.56.7.077108 . Submission: Received: 4 May 2017; Accepted: 29 June 2017
Received: 4 May 2017; Accepted: 29 June 2017; Published: 20 July 2017
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