Highly nonlinear enhanced-core photonic crystal fiber with low dispersion for wavelength conversion based on four-wave mixing

Abstract

In this paper, a new structure of highly nonlinear low dispersion photonic crystal fiber (HN-PCF) by elliptical concentration of GeO₂ in the PCF core has been proposed. Using finite difference time domain (FDTD) method, we have analyzed the dispersion properties and effective mode area in the HN-PCF. Simulative results show that the dispersion variation is within±0.65 ps/(nm∙km) in C-band, especially 0.24 ps/(nm∙km) in 1.55 μm wavelength. Effective area and nonlinear coefficient are 1.764 μm² and 72.6 W^-1∙km^-1 respectively at 1.55 μm wavelength. The proposed PCF demonstrates high nonlinear coefficient, ultra small effective mode area and nearly-zero flattened dispersion characteristics over C-band, which can have important application in all-optical wavelength conversion based on four wave mixing (FWM).

Keywords

dispersion / effective area / four wave mixing (FWM) / wavelength conversion / photonic crystal fiber (PCF)

References

[1] Geraghty D F, Lee R B, Verdiell M, Ziari M, Mathur A, Vahala K J. Wavelength conversion for WDM communication systems using four-wave mixing in semiconductor optical amplifiers. IEEE Journal on Selected Topics in Quantum Electronics, 1997, 3(5): 1146-1155

[2] Bhuiyan M N, Matsuura M, Nguyen Tan H, Kishi N. Polarization-insensitive and widely tunable wavelength conversion for polarization shift keying signal based on four wave mixing in highly non-linear fiber. Optics Express, 2010, 18(3): 2467-2476

[3] Qasaimeh O. Theory of four-wave mixing wavelength conversion in quantum dot semiconductor optical amplifiers. IEEE Photonics Technology Letters, 2004, 16(4): 993-995

[4] Brès C S, Zlatanovic S, Wiberg A O J, Radic S. Continuous-wave four-wave mixing in cm-long Chalcogenide microstructured fiber. Optics Express, 2011, 19(26): B621-B627

[5] Ho M C, Marhic M E, Wong K Y K, Kazovsky L G. Narrow-linewidth idler generation in fiber four-wave mixing and parametric amplification by dithering two pumps in opposition of phase. Journal of Lightwave Technology, 2002, 20(3): 469-476

[6] Kanka J. Design of photonic crystal fibers with highly nonlinear glasses for four-wave-mixing based telecom applications. Optics Express, 2008, 16(25): 20395-20408

[7] Cerqueira S A Jr, Boggio J M, Rieznik A A, Hernandez-Figueroa H E, Fragnito H L, Knight J C. Highly efficient generation of broadband cascaded four-wave mixing products. Optics Express, 2008, 16(4): 2816-2828

[8] Zhang A, Demokan M S. Broadband wavelength converter based on four-wave mixing in a highly nonlinear photonic crystal fiber. Optics Letters, 2005, 30(18): 2375-2377

[9] Russell P. Photonic-crystal fibers. Journal of Lightwave Technology, 2006, 24(12): 4729-4749

[10] Saitoh K, Florous N, Koshiba M. Ultra-flattened chromatic dispersion controllability using a defected-core photonic crystal fiber with low confinement losses. Optics Express, 2005, 13(21): 8365-8371

[11] Saitoh K, Koshiba M, Hasegawa T, Sasaoka E. Chromatic dispersion control in photonic crystal fibers: application to ultra-flattened dispersion. Optics Express, 2003, 11(8): 843-852

[12] Chow K K, Kikuchi K, Nagashima T, Hasegawa T, Ohara S, Sugimoto N. Four-wave mixing based widely tunable wavelength conversion using 1-m dispersion-shifted bismuth-oxide photonic crystal fiber. Optics Express, 2007, 15(23): 15418-15423

[13] Wang Z, Liu H, Huang N, Sun Q, Wen J. Efficient terahertz-wave generation via four-wave mixing in silicon membrane waveguides. Optics Express, 2012, 20(8): 8920-8928

[14] Dong L, Thomas B K, Fu L. Highly nonlinear silica suspended core fibers. Optics Express, 2008, 16(21): 16423-16430

[15] Saitoh K, Koshiba M. Highly nonlinear dispersion-flattened photonic crystal fibers for supercontinuum generation in a telecommunication window. Optics Express, 2004, 12(10): 2027-2032

[16] Xu Q, Miao R, Zhang Y. Highly nonlinear low-dispersion photonic crystal fiber with high birefringence for four-wave mixing. Optical Materials, 2012, 35(2): 217-221

[17] Sheng X Z, Lou S Q. Influence of deformation holes on properties of photonic crystal fibers. Chinese Physics Letters, 2005, 22(10): 2588-2591

[18] Saitoh K, Koshiba M. Numerical modeling of photonic crystal fibers. Journal of Lightwave Technology, 2005, 23(11): 3580-3590

[19] Sun T T, Kai G Y, Wang Z, Yuan S Z, Dong X Y. Enhanced nonlinearity in photonic crystal fiber by germanium doping in the core region. Chinese Optics Letters, 2008, 6(2): 93-95

[20] Butov O V, Golant K M, Tomashuk A L, van Stralen M J N, Breuls A H E. Refractive index dispersion of doped silica for fiber optics. Optics Communications, 2002, 213(4-6): 301-308

[21] Nakajima K, Ohashi M. Dopant dependence of effective nonlinear refractive index in GeO₂- and F-doped core single-mode fibers. IEEE Photonics Technology Letters, 2002, 14(4): 492-494

[22] Chen M Y, Subbaraman H, Chen R T. One stage pulse compression at 1554 nm through highly anomalous dispersive photonic crystal fiber. Optics Express, 2011, 19(22): 21809-21817

[23] Wang J, Jiang C, Hu W, Gao M. Modified design of photonic crystal fibers with flattened dispersion. Optics & Laser Technology, 2006, 38(3): 169-172

[24] Udagedara I, Premaratne M, Rukhlenko I D, Hattori H T, Agrawal G P. Unified perfectly matched layer for finite-difference time-domain modeling of dispersive optical materials. Optics Express, 2009, 17(23): 21179-21190

[25] Taniyama H, Sumikura H, Notomi M. Finite-difference time-domain analysis of photonic crystal slab cavities with two-level systems. Optics Express, 2011, 19(23): 23067-23077

[26] Lamont M R, Kuhlmey B T, de Sterke C M. Multi-order dispersion engineering for optimal four-wave mixing. Optics Express, 2008, 16(10): 7551-7563

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