Low Dispersion Slow Light in Slot Waveguide Grating

A novel and simple one-dimensional waveguide grating with two parallel air slots is proposed to support low dispersion slow light. Due to more structural tuning freedoms provided by introduction of the slots, it is easier to achieve the perfect flat and straight slow light mode dispersion curve. Low group dispersion of only 3.38 ps2/mm with a slow light group index of 13 is obtained in a plane wave expansion calculation, which denotes a wide bandwidth of 13.2 nm. This result is also proved by finite-difference time-domain simulation in which the output pulse relative distortion is only 0.96% towards the input pulse.

[1]  Steven G. Johnson,et al.  Slow-light, band-edge waveguides for tunable time delays. , 2005, Optics express.

[2]  T. Krauss.  Why do we need slow light , 2008 .

[3]  Toshihiko Baba,et al.  Slow light with low dispersion and nonlinear enhancement in a lattice-shifted photonic crystal waveguide. , 2009, Optics letters.

[4]  Zhiping Zhou,et al.  Novel slow light waveguide with controllable delay-bandwidth product and utra-low dispersion. , 2010, Optics express.

[5]  L. Kuipers,et al.  The effect of higher order dispersion on slow light propagation in photonic crystal waveguides , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

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

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

[8]  Pablo Sanchis,et al.  Group index engineering in silicon corrugated waveguides , 2010 .

[9]  Yang Yue,et al.  Flattened dispersion in silicon slot waveguides. , 2010, Optics express.

[10]  Thomas F. Krauss,et al.  Dispersion control and slow light in slotted photonic crystal waveguides , 2008 .

[11]  Larry R. Dalton,et al.  Nonlinear polymer-clad silicon slot waveguide modulator with a half wave voltage of 0.25 V , 2008 .

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

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

[14]  C Monat,et al.  Dispersion engineering of slow light photonic crystal waveguides using microfluidic infiltration. , 2009, Optics express.

[15]  Zhiping Zhou,et al.  Wideband slow light in chirped slot photonic-crystal coupled waveguides. , 2010, Optics express.

[16]  Lorenzo Pavesi,et al.  Band gap characterization and slow light effects in one dimensional photonic crystals based on silicon slot-waveguides. , 2007, Optics express.

[17]  Toshihiko Baba,et al.  Wideband and low dispersion slow light by chirped photonic crystal coupled waveguide. , 2005, Optics express.

[18]  Yang Yue,et al.  Flat and low dispersion in highly nonlinear slot waveguides. , 2010, Optics express.

[19]  Steven G. Johnson,et al.  Photonic-crystal slow-light enhancement of nonlinear phase sensitivity , 2002 .

[20]  Steven G. Johnson,et al.  Adiabatic theorem and continuous coupled-mode theory for efficient taper transitions in photonic crystals. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[21]  Jeff F. Young,et al.  Extrinsic optical scattering loss in photonic crystal waveguides: role of fabrication disorder and photon group velocity. , 2005, Physical review letters.

[22]  Steven G. Johnson,et al.  Block-iterative frequency-domain methods for Maxwell's equations in a planewave basis. , 2001, Optics express.

[23]  E. Cassan,et al.  Wideband Slow Light in One-Dimensional Chirped Holey Grating Waveguide , 2010, IEEE Photonics Technology Letters.

[24]  Zhiping Zhou,et al.  Nonlinear equation method for band structure calculations of photonic crystal slabs , 2006 .

[25]  Steven G. Johnson,et al.  Improving accuracy by subpixel smoothing in the finite-difference time domain. , 2006, Optics letters.

[26]  Chun Jiang.  Asymmetric one-dimensional periodic slow-light waveguide , 2010 .