Highly Nonlinear Dispersion-Flattened Slotted Spiral Photonic Crystal Fibers

作者：Liao Jianfei^*; Sun Junqiang; Du Mingdi; Qin Yi

来源：IEEE Photonics Technology Letters, 2014, 26(4): 380-383.

DOI：10.1109/LPT.2013.2293661

• Nonlinearity
• chromatic dispersion
• slot effect
• photonic crystal fibers (PCFs)

We propose a new type of highly nonlinear spiral photonic crystal fiber (PCF) with flat and low dispersion over a wide wavelength range. The new PCF structure adopts an elliptical slot core. The simulation results show that the nonlinear coefficients in our proposed PCF are > 224 W(-1)m(-1) (quasi-TE mode) and 226 W(-1)m(-1) (quasi-TM mode) at the wavelength of 1.55 mu m and the nonlinear coefficient increases with the wavelength increasing. It is also demonstrated that ultraflattened dispersion of 0.91 ps/(nm.km) (quasi-TE mode) and 1.33 ps/(nm.km) (quasi-TM mode) can be achieved over a 150-nm wavelength range, and two near-zero dispersion slopes of -1.25 x 10(-3) ps/(nm(2).km) (quasi-TE mode) and -4.82 x 10(-3) ps/(nm(2).km) (quasi-TM mode) at 1.55 mu m can also be obtained. Owing to its high nonlinear coefficient and flattened dispersion, the proposed slotted spiral PCF will have great potential for all-optical signal processing applications.

• 出版日期2014-2-15
• 单位华中科技大学