Journal ArticleDOI
Active control of slow light on a chip with photonic crystal waveguides
Reads0
Chats0
TLDR
An over 300-fold reduction of the group velocity on a silicon chip via an ultra-compact photonic integrated circuit using low-loss silicon photonic crystal waveguides that can support an optical mode with a submicrometre cross-section is experimentally demonstrated.Abstract:
It is known that light can be slowed down in dispersive materials near resonances. Dramatic reduction of the light group velocity-and even bringing light pulses to a complete halt-has been demonstrated recently in various atomic and solid state systems, where the material absorption is cancelled via quantum optical coherent effects. Exploitation of slow light phenomena has potential for applications ranging from all-optical storage to all-optical switching. Existing schemes, however, are restricted to the narrow frequency range of the material resonance, which limits the operation frequency, maximum data rate and storage capacity. Moreover, the implementation of external lasers, low pressures and/or low temperatures prevents miniaturization and hinders practical applications. Here we experimentally demonstrate an over 300-fold reduction of the group velocity on a silicon chip via an ultra-compact photonic integrated circuit using low-loss silicon photonic crystal waveguides that can support an optical mode with a submicrometre cross-section. In addition, we show fast (approximately 100 ns) and efficient (2 mW electric power) active control of the group velocity by localized heating of the photonic crystal waveguide with an integrated micro-heater.read more
Citations
More filters
Journal ArticleDOI
Photonic crystal double-coupled cavity waveguides and their application in design of slow-light delay lines
TL;DR: In this article, double-coupled cavity waveguides are introduced to support two orthogonal degenerate resonance modes, and the cavities are coupled together both horizontally and vertically.
Journal ArticleDOI
Statistical fluctuations of transmission in slow light photonic-crystal waveguides
Simon Mazoyer,Philippe Lalanne,Jean-Claude Rodier,Jean-Paul Hugonin,Marko Spasenović,Laurens Kuipers,Daryl M. Beggs,Thomas F. Krauss +7 more
TL;DR: The peaks that are observed in an intermediate regime between the ballistic and localization transports are responsible for a smearing of the local density of states, for a rapid broadening of the probability density function of the transmission, and bring a severe constraint on the effective use of slow light for on-chip optical information processing.
Journal ArticleDOI
Slow light in an alternative row of ellipse-hole photonic crystal waveguide
TL;DR: The presented results give indications about the "ultimate" possible improvement of slow light waveguide metrics by using noncircular holes by studying the relative temporal pulse-width spreading with the two-dimensional finite-difference time-domain method.
Journal ArticleDOI
Backscattering and disorder limits in slow light photonic crystal waveguides
TL;DR: By properly engineering the waveguide, backscattering can be significantly reduced while maintaining the same low group velocity, which provides fundamental limits for the applicability of slow light waveguides.
Journal ArticleDOI
Silicon nanophotonic devices for integrated sensing
Babak Momeni,Siva Yegnanarayanan,Mohammad Soltani,Ali A. Eftekhar,Ehsan Shah Hosseini,Ali Adibi +5 more
TL;DR: The potentials of a nanophotonic platform, including compactness, low power consumption, integrability with other functionalities, and high sensitivity make them a suitable candidate for sensing applications as mentioned in this paper.
References
More filters
Journal ArticleDOI
Light speed reduction to 17 metres per second in an ultracold atomic gas
Lene Vestergaard Hau,Lene Vestergaard Hau,Stephen E. Harris,Zachary Dutton,Zachary Dutton,Cyrus H. Behroozi,Cyrus H. Behroozi +6 more
TL;DR: In this paper, an experimental demonstration of electromagnetically induced transparency in an ultracold gas of sodium atoms, in which the optical pulses propagate at twenty million times slower than the speed of light in a vacuum, is presented.
Journal ArticleDOI
Block-iterative frequency-domain methods for Maxwell’s equations in a planewave basis
TL;DR: A fully-vectorial, three-dimensional algorithm to compute the definite-frequency eigenstates of Maxwell's equations in arbitrary periodic dielectric structures, including systems with anisotropy or magnetic materials, using preconditioned block-iterative eigensolvers in a planewave basis is described.
Journal ArticleDOI
Observation of coherent optical information storage in an atomic medium using halted light pulses
Chien Liu,Zachary Dutton,Zachary Dutton,Cyrus H. Behroozi,Lene Vestergaard Hau,Lene Vestergaard Hau +5 more
TL;DR: A theoretical model is presented that reveals that the system is self-adjusting to minimize dissipative loss during the ‘read’ and ‘write’ operations, anticipating applications of this phenomenon for quantum information processing.