Deterministic tuning of slow-light in photonic-crystal waveguides through the C and L bands by atomic layer deposition

Chen, Charlton J.; Husko, Chad A.; Meric, Inanc; Shepard, Ken L.; Chee Wei Wong; Green, William M. J.; Vlasov, Yurii A.; Assefa, Solomon
February 2010
Applied Physics Letters;Feb2010, Vol. 96 Issue 8, p081107
Academic Journal
We demonstrate digital tuning of the slow-light regime in silicon photonic-crystal waveguides by performing atomic layer deposition of hafnium oxide. The high group-index regime was deterministically controlled (redshift of 140±10 pm per atomic layer) without affecting the group-velocity dispersion and third-order dispersion. Additionally, differential tuning of 110±30 pm per monolayer of the slow-light TE-like and TM-like modes was observed. This passive postfabrication process has potential applications including the tuning of chip-scale optical interconnects, as well as Raman and parametric amplification.


Related Articles

  • Raman scattering by high-density dispersions. I. Formulation of theory and application to a pair of coated particles. Xu, Muliang; Dignam, Michael J. // Journal of Chemical Physics;5/15/1992, Vol. 96 Issue 10, p7758 

    The methods developed in our earlier papers, dealing with Raman scattering from small isolated, spherical particles, uniformly coated with radially uniaxial molecules, are extended to include scattering driven by applied multipolar fields. Such fields are generated by the action of the incident...

  • Acoustic cavities. Fainstein, A.; Lacharmoise, P.; Jusserand, B. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p1105 

    We describe semiconductor double resonators that confine light and sound and strongly enhance their interaction. We address the double optical resonant Raman interaction in these devices, and we describe in detail the main features of the Raman spectra that include the scattering with standing...

  • Origin of the refractive-index increase in laser-written waveguides in glasses. Ponader, Carl W.; Schroeder, Joseph F.; Streltsov, Alexander M. // Journal of Applied Physics;Mar2008, Vol. 103 Issue 6, p063516 

    We present firm evidence that the mechanism for the refractive-index increase in fused silica caused by irradiation with ultrafast intense laser pulses is the densification of glass. This conclusion is based on the correlation observed between the refractive-index values in waveguides in silica...

  • Raman scattering of folded acoustic phonons in self-assembled Si/Ge dot superlattices. Tan, P. H.; Bougeard, D.; Abstreiter, G.; Brunner, K. // Applied Physics Letters;4/5/2004, Vol. 84 Issue 14, p2632 

    Self-assembled Si/Ge dot multilayers with small, uncorrelated dots fabricated by molecular beam epitaxy in the Stranski–Krastanov growth mode are studied by Raman scattering of folded longitudinal acoustic (FLA) modes. The FLA Raman spectra are analyzed and modeled with respect to mode...

  • Surface enhanced Raman imaging of a patterned self-assembled monolayer formed by microcontact printing on a silver film. Yang, X. M.; Tryk, D. A.; Hasimoto, K.; Fujishima, A. // Applied Physics Letters;12/23/1996, Vol. 69 Issue 26, p4020 

    The surface enhanced Raman scattering effect was used in conjunction with a micro-Raman system to produce an image of a pattern, on an evaporated silver surface, formed by microcontact printing of p-nitrothiophenol (PNTP). This surface is characterized by roughness on the scale of 50–100...

  • Supercontinuum generation in a fiber grating. Westbrook, P.S.; Nicholson, J.W.; Feder, K.S.; Li, Y.; Brown, T. // Applied Physics Letters;11/15/2004, Vol. 85 Issue 20, p4600 

    We show that supercontinuum generation in a fiber containing a Bragg grating exhibits > lox enhancement near the Bragg resonance wavelength. We also show that the grating dispersion exceeds the waveguide dispersion over a bandwidth far in excess of its photonic hand gap. The observed enhancement...

  • Monoclinic-tetragonal phase transition in zirconium and hafnium dioxides: A high-temperature raman scattering investigation. Voronko, Yu. K.; Sobol, A. A.; Shukshin, V. E. // Physics of the Solid State;Oct2007, Vol. 49 Issue 10, p1963 

    Zirconium dioxide ZrO2 and hafnium dioxide HfO2 are investigated using high-temperature Raman spectroscopy in the temperature range 300–2080 K, including the regions of the monoclinic-tetragonal phase transitions revealed in these materials. An analysis is made of the specific features...

  • Silicon yields light two ways. Jones-Bey, Hassaun A. // Laser Focus World;Apr2003, Vol. 39 Issue 4, p19 

    Focuses on the Raman effect on silicon wave guides, which present as a potential alternative to the rare earth-doped silicon light emitters. Fiber-amplification processes used in optical communication; Crystalline structure of silicon; Strength of the Raman gain interaction; Raman light...

  • Cyanide adsorption on silver and gold overlayers on island films as determined by surface enhanced Raman scattering. Murray, Cherry A.; Bodoff, Stephanie // Journal of Chemical Physics;7/1/1986, Vol. 85 Issue 1, p573 

    Cyanide adsorption in air on silver, gold, and overlayers of gold on silver and silver on gold is investigated by surface enhanced Raman scattering, using island films to enhance the CN Raman scattering by ∼4 orders of magnitude. We studied pure metal island films as well as either silver...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics