![[Nonlinear Physics Centre]](/nonlinear/images/logo-x.gif){kind=logo}
People
One of our new areas of research started last year is the study
of nonlinear properties of photonic crystals and
photonic crystal waveguides.
Photonic crystals are usually viewed as an optical analog of semiconductors that modify the properties of light similarly to a microscopic atomic lattice that creates a semiconductor band-gap for electrons. It is therefore believed that by replacing relatively slow electrons with photons as the carriers of information, the speed and band-width of advanced communication systems will be dramatically increased, thus revolutionizing the telecommunication industry. However, to employ the high-technology potential of photonic crystals, it is crucially important to achieve a dynamical tunability of their properties. This idea can be realized by changing the light intensity in the nonlinear photonic crystals. 1D photonic crystals. We developed a detailed theoretical description of formation of localized modes at nonlinear layers embedded into a 1-dimensional photonic structure [ Phys. Rev. E 63, 016615 (2001), Phys. Rev. Lett. 87, 83901 (2001) ]. 2D photonic crystals: Nonlinear modes. Our first paper [ Phys. Rev. E 62, 5777 (2000) ] on the properties of the nonlinear localized waves in two-dimensional photonic crystal waveguides formed by an array of Kerr-type nonlinear dielectric rods has been already featured in the Special Issue of Optics and Photonics News 11, 33 (2000). We have also shown how can be stabilized the 2D nonlinear modes in Kerr-type reduced-symmetry photonic crystals [ Phys. Rev. Lett. 86, 5474 (2001) ].
2D photonic crystals: Harmonic generation. Other results of our group on photonic crystals include the first theory of optical phase-matching in 2D photonic crystals with quadratic nonlinearity [ Opt. Lett. 25, 1204 (2000) ], and a new method of an efficient harmonic generation in nonlinear photonic crystals [ Opt. Lett. 26, 539 (2001) ].
Overviews. A general overview of the exciting field of photonic crystals, together with a summary of our recent results on nonlinear photonic crystals, has became the August cover story of "The Physicist" 37, 125 (2000). Some of our results in this field are included in a future article of Physics Today (by D. Campbell, S. Flach, and Yu. Kivshar) scheduled for publication in 2001. Some other results will be published as a Chapter in the Springer book "Nonlinear Photonic Crystals" edited by B.J. Eggleton and R.E. Slusher [arXiv:physics/0104088].
The articles are Copyright © by the respective publishers, and may be downloaded for personal use only. Any other use requires prior permission of the author and the respective publisher.
|
