Slow Light Property Improvement and Optical Buffer Capability in Ring-Shape-Hole Photonic Crystal Waveguide

Flatband slow light in a ring-shape-hole photonic crystal waveguide (RPCW) has been theoretically investigated. Numerical results show that both the outer and inner radii of the first two rows of holes adjacent to the defect have much affect on slow light properties. Therefore, by appropriately modifying the outer and inner radii of the ring-shaped holes, the slow light property is successfully optimized. Then we further enlarge the flat bandwidth by introducing the oblique structure. The negligible dispersion bandwidths ranging from 3.57 to 24.67 nm for group indexes from 28 to 115 are obtained, respectively, which is effectively improved if compared with other RPCW structures in previous works. Moreover, we also discussed the buffer capability and signal transmission characters of the RPCW. The result shows that the proposed structure has considerable potential for optical buffering applications.

[1]  Thomas Pertsch,et al.  Slow-light enhanced collinear second-harmonic generation in two-dimensional photonic crystals , 2008 .

[2]  Yoshimasa Sugimoto,et al.  The effect of higher-order dispersion on slow light propagation in photonic crystal waveguides. , 2006 .

[3]  T. Krauss,et al.  Flatband slow light in photonic crystals featuring spatial pulse compression and terahertz bandwidth. , 2007, Optics express.

[4]  Marco Gnan,et al.  Efficient coupling into slow-light photonic crystal channel guides using photonic crystal tapers. , 2007, Optics express.

[5]  F. Diederich,et al.  All-optical high-speed signal processing with silicon–organic hybrid slot waveguides , 2009 .

[6]  S. Hughes,et al.  Interplay between disorder-induced scattering and local field effects in photonic crystal waveguides , 2010, 1003.0401.

[7]  R.S. Tucker,et al.  Slow-light optical buffers: capabilities and fundamental limitations , 2005, Journal of Lightwave Technology.

[8]  Jacob Fage-Pedersen,et al.  Photonic crystal waveguides with semi-slow light and tailored dispersion properties. , 2006, Optics express.

[9]  Yuefeng Ji,et al.  A Study of Dynamic Modulation and Buffer Capability in Low Dispersion Photonic Crystal Waveguides , 2010, Journal of Lightwave Technology.

[10]  Chun Jiang,et al.  Photonic crystal slow light waveguides with large delay–bandwidth product , 2009 .

[11]  Jing Ma,et al.  Demonstration of Ultraslow Modes in Asymmetric Line-Defect Photonic Crystal Waveguides , 2008, IEEE Photonics Technology Letters.

[12]  Sacharia Albin,et al.  Simple plane wave implementation for photonic crystal calculations. , 2003, Optics express.

[13]  Toshihiko Baba,et al.  Slow light in photonic crystals , 2008 .

[14]  L. Vivien,et al.  Improvement of delay-bandwidth product in photonic crystal slow-light waveguides. , 2010, Optics express.

[15]  Jing Ma,et al.  Dispersionless Slow Wave in Novel 2-D Photonic Crystal Line Defect Waveguides , 2008, Journal of Lightwave Technology.

[16]  Chun Jiang,et al.  Ultrawideband Low Dispersion Slow Light Waveguides , 2009, Journal of Lightwave Technology.

[17]  A Säynätjoki,et al.  Dispersion engineering of photonic crystal waveguides with ring-shaped holes. , 2007, Optics express.

[18]  Yuefeng Ji,et al.  Buffering capability and limitations in low dispersion photonic crystal waveguides with elliptical airholes. , 2010, Applied optics.

[19]  Jing Ma,et al.  Flatband Slow Light in Asymmetric Line-Defect Photonic Crystal Waveguide Featuring Low Group Velocity and Dispersion , 2008, IEEE Journal of Quantum Electronics.

[20]  Zhiping Zhou,et al.  Flat Band Slow Light in Symmetric Line Defect Photonic Crystal Waveguides , 2009, IEEE Photonics Technology Letters.

[21]  Bin Liu,et al.  Wideband slow light and dispersion control in oblique lattice photonic crystal waveguides. , 2010, Optics express.

[22]  Toshihiko Baba,et al.  Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguide. , 2008, Optics express.

[23]  D. Moss,et al.  Green light emission in silicon through slow-light enhanced third-harmonic generation in photonic-crystal waveguides , 2009 .

[24]  T. Krauss,et al.  Systematic design of flat band slow light in photonic crystal waveguides. , 2008, Optics express.

[25]  Masaya Notomi,et al.  Disorder-induced scattering loss of line-defect waveguides in photonic crystal slabs , 2005 .

[26]  Michal Lipson,et al.  All-optical slow-light on a photonic chip. , 2006, Optics express.

[27]  Harri Lipsanen,et al.  Properties, applications and fabrication of photonic crystals with ring-shaped holes in silicon-on-insulator , 2008 .

[28]  Toshihiko Baba,et al.  Stopping of light by the dynamic tuning of photonic crystal slow light device. , 2010, Optics express.