Highly birefringent octagonal photonic crystal fibers with two zero-dispersion wavelengths

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2011,（11）
• 页码范围: 37-40
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201109.100609

摘要

A new highly birefringent octagonal photonic crystal fiber (Hi-Bi OPCF) with a rectangular array of four elliptical airholes in the fiber core region is proposed and analyzed using the full-vector finite element method with anisotropic perfect match layer absorbing boundaries.Numerical results show that the phase birefringence of the photonic crystal fiber (PCF) reaches 3.43x 10-2 at the wavelength of 1 550 nm.Moreover,two zero-dispersion wavelengths are achieved in the visible and near infrared wavelength regions for one polarization state but not in the other.Photonic crystal fibers (PCFs)[1-3] have a wavelengthscale periodic silica-air microstructure around the core along their length,providing much more degrees of freedom for tailoring the properties of PCF,such as chromatic dispersion[4,5],confinement loss[6],nonlinear[7],and birefringence.As a result,it is also possible to fabricate a highly birefringent PCF by introducing suitable airholes in cladding[8,9].Recently,great attention has been devoted to the enhancement of birefringence of PCF[10-13],because the highly birefringent polarization maintaining PCFs have been widely used in the fiber communication systems and sensing applications[14,15].