Optical Gain, Phase, and Refractive Index Dynamics in Photonic Crystal Quantum-Dot Semiconductor Optical Amplifiers

In this paper, the gain, phase, and refractive index dynamics of photonic crystal quantum-dot semiconductor optical amplifiers (PC-QDSOAs) are investigated for the first time. For this purpose, we establish a comprehensive nonlinear state space model with 1088 state variables to simulate the carrier dynamics of the inhomogeneously broadened InAs/GaAs QD active region embedded in a flat-band slow-light photonic crystal waveguide. The gain and phase recovery responses are monitored during the amplification of an ultrashort pump pulse. Simulation results show that changes in refractive index in the PC-QDSOA active region are much stronger than the index changes in the conventional QDSOAs. In addition, the gain and phase recovery time in PC-QDSOAs are similar to those in the conventional QDSOAs based on ridge waveguide structures. Also, we found that the injected current and the consumed power in PC-QDSOAs can be two orders of magnitude less than those values in the conventional QDSOAs.

[1]  Lucio Claudio Andreani,et al.  Light–matter interaction in photonic crystal slabs , 2007 .

[2]  A. Sarangan,et al.  Temperature-dependent Sellmeier equation for the refractive index of Al(x)Ga(1-x)As. , 2007, Optics letters.

[3]  H. Taleb,et al.  Phase Recovery Acceleration in Quantum-Dot Semiconductor Optical Amplifiers , 2012, Journal of Lightwave Technology.

[4]  P. Kaspar,et al.  Design proposal for a low loss in-plane active photonic crystal waveguide with vertical electrical carrier injection. , 2012, Optics express.

[5]  Wei Jiang,et al.  High speed silicon photonic crystal waveguide modulator for low voltage operation , 2007 .

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

[7]  A. Rostami,et al.  Nanostructure Semiconductor Optical Amplifiers , 2011 .

[8]  Tao Wang,et al.  Modified Drude model for free-carrier absorption due to bound-to-continuum transition in quantum-dot semiconductor optical amplifier , 2013 .

[9]  A. A. Ukhanov,et al.  Comparison of the carrier induced refractive index, gain, and linewidth enhancement factor in quantum dot and quantum well lasers , 2004 .

[10]  Wei Yan,et al.  A novel photonic crystal waveguide-based symmetric-Mach-Zehnder-type ultrafast all-optical switch using quantum dot semiconductor optical amplifier , 2011, Other Conferences.

[11]  R. Kappeler.  Reducing the propagation losses of slab photonic crystal waveguides for active photonic device , 2012 .

[12]  Y. Vlasov,et al.  Ultra-low loss photonic integrated circuit with membrane-type photonic crystal waveguides. , 2003, Optics express.

[13]  Band structure of honeycomb photonic crystal slabs , 2006, cond-mat/0604153.

[14]  Masaya Notomi,et al.  20-Gbit/s directly modulated photonic crystal nanocavity laser with ultra-low power consumption. , 2011, Optics express.

[15]  Marc Sorel,et al.  Silicon coupled-ring resonator structures for slow light applications: potential, impairments and ultimate limits , 2010 .

[16]  Design and fabrication of a photonic crystal directional coupler for use as an optical switch , 2008 .

[17]  J. Jágerská.  Dispersion Properties of Photonic Crystals and Silicon Nanostructures Investigated by Fourier-Space Imaging , 2011 .

[18]  Seyed Mohammad Mirjalili,et al.  Optical buffer performance enhancement using Particle Swarm Optimization in Ring-Shape-Hole Photonic Crystal Waveguide , 2013 .

[19]  Ali Adibi,et al.  Design of photonic crystal optical waveguides with singlemode propagation in the photonic bandgap , 2000 .

[20]  D. Bimberg,et al.  Quantum Dot Amplifiers for 100 Gbit Ethernet , 2006, 2006 International Conference on Transparent Optical Networks.

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

[22]  R. Hunsperger.  Photon loss in the active and passive regions of a semiconductor laser , 1969 .

[23]  K. Abedi,et al.  Ultrafast All-Optical Signal Processing Using Optically Pumped QDSOA-Based Mach–Zehnder Interferometers , 2013, IEEE Journal of Selected Topics in Quantum Electronics.

[24]  Thomas F. Krauss.  Slow light in photonic crystal waveguides , 2007 .

[25]  Henri Benisty,et al.  General recipe for flatbands in photonic crystal waveguides. , 2009, Optics express.

[26]  Min Qiu,et al.  Effective index method for heterostructure-slab-waveguide-based two-dimensional photonic crystals , 2002 .

[27]  Toshihiko Baba,et al.  All Semiconductor Low-Δ Photonic Crystal Waveguide for Semiconductor Optical Amplifier , 2006 .

[28]  J. Brosi.  Slow-light Photonic Crystal Devices for High-Speed Optical Signal Processing , 2010 .

[29]  A. Scherer,et al.  Coupled-resonator optical waveguide: a proposal and analysis. , 1999, Optics letters.