Wide Range Tuning of Slow Light Pulse in SOI Photonic Crystal Coupled Waveguide via Folded Chirping
- 13 October 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Selected Topics in Quantum Electronics
- Vol. 16 (1) , 192-199
- https://doi.org/10.1109/jstqe.2009.2032515
Abstract
In this paper, we demonstrate state-of-the-art slow light in silicon-on-insulator photonic crystal coupled waveguide, which allows slow light pulse transmission and its tunable delay by means of structural chirping. The key idea of this study is the application of a folded chirping profile to the structure, instead of the conventional monotonous chirping. It suppresses unwanted spectral oscillation caused by structural disordering and expands the tuning range. By postprocessing an airhole-diameter-chirped device, we show that 0.9-ps-wide slow light pulses are delayed for 72 ps, corresponding to a buffering capacity of 80 bits. In a separate, unchirped device, we demonstrate a tunable delay by applying thermally induced index chirping. Here, a maximum tuning range of 103 ps and a tunable capacity of 22 bits are obtained.Keywords
This publication has 18 references indexed in Scilit:
- Large-scale arrays of ultrahigh-Q coupled nanocavitiesNature Photonics, 2008
- Two Regimes of Slow-Light Losses Revealed by Adiabatic Reduction of Group VelocityPhysical Review Letters, 2008
- Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguideOptics Express, 2008
- Error-free continuously-tunable delay at 10 Gbit/s in a reconfigurable on-chip delay-lineOptics Express, 2008
- Experimental observation of slow light in photonic crystal coupled waveguidesOptics Express, 2007
- Ultracompact optical buffers on a silicon chipNature Photonics, 2006
- Wideband and low dispersion slow light by chirped photonic crystal coupled waveguideOptics Express, 2005
- Active control of slow light on a chip with photonic crystal waveguidesNature, 2005
- Disorder-induced scattering loss of line-defect waveguides in photonic crystal slabsPhysical Review B, 2005
- Dispersion-controlled optical group delay device by chirped photonic crystal waveguidesApplied Physics Letters, 2004