Slow Light Effect of Photonic Crystal Waveguides by Adjusting Parameters of Crescent Scatterers

Abstract:

Crescent scatterers possess the properties of anisotropy and multiple degrees of freedom. With plane-wave expansion method (PWE), the slow light effect with high n_g and low dispersion can be achieved by optimizing the structure parameters of photonic crystal waveguide with line defect, such as changing the radius of two circles and center distance. Slow light with low dispersion can be obtained by these methods, which implies that choosing suitable scatterers and adjusting their parameters can efficiently achieve slow light with high n_g and low dispersion.

• Periodical: Advanced Materials Research (Volumes 926-930)
• Pages: 415-418
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.926-930.415
• Online since: May 2014
• Authors: Yong Wan*, Yue Guo, Jing Gao, Ming Hui Jia
• Keywords: Crescent Scatterer, Dispersion, Photonic Crystal (PC), Slow Light, Wave Guide

References

[1] Z. Shi, R. W. Boyd, D. J. Gauthier, C. C. Dudley. Enhancing the spectral sensitivity of interferometers using slowlight media. Opt. Lett. , 2007, 32: 915-917.

DOI: 10.1364/ol.32.000915

[2] T. Baba. Slow light in photonic crystals. Nat. Photon. , 2008, 2: 465-473.

[3] T. F. Krauss. Slow light in photonic crystal waveguides. J. Phys. D , 2007, 40: 2666-2670.

[4] S. Assefa, S. J. McNab, Y. A. Vlasov. Transmission of slow light through photonic crystal waveguide bends. Opt. Lett. , 2006, 31: 745-747.

DOI: 10.1364/ol.31.000745

[5] A. D. Falco, L. O'Faolain, T. F. Krauss. Dispersion control and slow light in slotted photonic crystal waveguides. App. Phy. Lett. , 2008, 92: 083501.

DOI: 10.1063/1.2885072

[6] B. Wang, M. A. Dündar, R. Nötzel, F. Karouta. Photonic crystal slot nanobeam slow light waveguides for refractive index sensing. Appl. Phys. Lett. , 2010, 97: 151105.

DOI: 10.1063/1.3497296

[7] S. Kubo, D. Mori, T Baba. Low-group-velocity and low-dispersion slow light in photonic crystal waveguides. Opt. Express , 2007, 32: 2981-2983.

DOI: 10.1364/ol.32.002981

[8] L. H. Frandsen, A. V. Lavrinenko, J. F. Pefersen, P. I. Borel. Photonic crystal waveguides with semi-slowlight and tailored dispersion properties. Opt. Express , 2006, 14: 9444-9450.

DOI: 10.1364/oe.14.009444

[9] S. Kubo, D. Mori, and T. Baba. Low-group-velocity and low-dispersion slow light in photonic crystal waveguides. Opt. Lett. , 2007, 32: 2981-2983.

DOI: 10.1364/ol.32.002981

[10] C. Li, H. Tian, C. Zheng, Y. Ji. Improved line defect structures for slow light transmission in photonic crystal waveguide. Opt. Commun. , 2007, 279: 214-218.

DOI: 10.1016/j.optcom.2007.06.058

[11] N. Ozaki, Y. Kitagawa, Y. Takata. High transmission recovery of slow light in a photonic crystal waveguide using a hetero groupvelocity waveguide. Opt. Express , 2007, 15: 7974-7483.

DOI: 10.1364/oe.15.007974

[12] Y. Hamachi, S. Kubo, T. Baba. Slow light with low dispersion and nonlinear enhancement in a lattice-shifted photonic crystal waveguide. Opt. Lett. , 2009, 34 : 1072-1074.

DOI: 10.1364/ol.34.001072

[13] J. Wu, Y. P. Li, C. Peng, and Z. Y. Wang. Numerical demonstration of slow light tuning in slotted photonic crystal waveguide using microfluidic infiltration. Opt. Commun. , 2011, 284: 2149-2152.

DOI: 10.1016/j.optcom.2011.01.004

[14] Y. Wan，K. Fu，C. Li，M. Yun, Improving slow light effect in photonic crystal line defect waveguide by using eye-shaped scatterers, Opt. Comm. 2013, 286(1), 192–196.

DOI: 10.1016/j.optcom.2012.09.025