Observation of two-dimensional discrete solitons in optically-induced nonlinear photonic lattices

Fleischer, Jason W.; Segev, Mordechai; Efremidis, Nikolaos K.; Christodoulides, D.N.

doi:10.1109/qels.2003.238165

Cited by 219 publications

(346 citation statements)

References 44 publications

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“…On the other hand, a waveguide array or a waveguide lattice can also be viewed 27 as fully analogous to a periodic chain of atoms, which lends itself to a broad spectrum of fascinating scientific possibilities ranging from Anderson localization of light 28,29 to parity-time symmetric effects 30 . Thus far, in most studies, the pitch associated with such relatively simple waveguide arrays/lattices has been typically large, ranging from a few micrometres to tens of micrometres (or a multiple of wavelengths) 18,19,21,31,32 . As such, the inter-coupling between waveguides can be generally weak, which helps to reduce crosstalk.…”

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confidence: 99%

High-density waveguide superlattices with low crosstalk

et al. 2015

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Silicon photonics holds great promise for low-cost large-scale photonic integration. In its future development, integration density will play an ever-increasing role in a way similar to that witnessed in integrated circuits. Waveguides are perhaps the most ubiquitous component in silicon photonics. As such, the density of waveguide elements is expected to have a crucial influence on the integration density of a silicon photonic chip. A solution to highdensity waveguide integration with minimal impact on other performance metrics such as crosstalk remains a vital issue in many applications. Here, we propose a waveguide superlattice and demonstrate advanced superlattice design concepts such as interlacing-recombination that enable high-density waveguide integration at a half-wavelength pitch with low crosstalk. Such waveguide superlattices can potentially lead to significant reduction in on-chip estate for waveguide elements and salient enhancement of performance for important applications, opening up possibilities for half-wavelength-pitch optical-phased arrays and ultra-dense space-division multiplexing.

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confidence: 99%

High-density waveguide superlattices with low crosstalk

et al. 2015

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“…Recent proposals include the generation of honeycomb vortex-antivortex lattices through linear interference of three expanding BECs 5 . Such lattices have never been observed experimentally, although related techniques have been used to nucleate vortices in BECs 6 or vortex solitons in non-linear media that have been used as waveguides 7 and photonic crystals 8 .…”

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confidence: 99%

Geometrically locked vortex lattices in semiconductor quantum fluids

et al. 2012

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Macroscopic quantum states can be easily created and manipulated within semiconductor microcavity chips using exciton-photon quasiparticles called polaritons. Besides being a new platform for technology, polaritons have proven to be ideal systems to study out-of-equilibrium condensates. Here we harness the photonic component of such a semiconductor quantum fluid to measure its coherent wavefunction on macroscopic scales. Polaritons originating from separated and independent incoherently pumped spots are shown to phase-lock only in high-quality microcavities, producing up to 100 vortices and antivortices that extend over tens of microns across the sample and remain locked for many minutes. The resultant regular vortex lattices are highly sensitive to the optically imposed geometry, with modulational instabilities present only in square and not triangular lattices. Such systems describe the optical equivalents to one-and two-dimensional spin systems with (anti)-ferromagnetic interactions controlled by their symmetry, which can be reconfigured on the fly, paving the way to widespread applications in the control of quantum fluidic circuits.

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“…One of the key paradigms of discretizing light behavior in periodical structures is the self-trapped states better known as "lattice solitons" [3][4][5][6][7][8]. Such discrete spatial solitons typically have their propagation constants residing in the semi-infinite gap (arising from the total internal reflection) or inside a true photonic band gap (arising from the Bragg reflection).…”

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confidence: 99%

“…Such discrete spatial solitons typically have their propagation constants residing in the semi-infinite gap (arising from the total internal reflection) or inside a true photonic band gap (arising from the Bragg reflection). Although gap solitons were traditionally considered as a temporal phenomenon in one-dimensional (1D) periodic media, spatial gap solitons in both 1D and 2D configurations have been demonstrated recently in a number of experiments with either a selffocusing or a self-defocusing nonlinearity [5,6,[9][10][11][12].…”

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confidence: 99%