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  • 1.
    Neff, Curtis W.
    et al.
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
    Andersson, L. Mauritz
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
    Qiu, Min
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
    Coupled resonator optical waveguide structures with highly dispersive media2006In: Optoeletronic Materials and Devices, Pts 1 and 2 / [ed] Lee, YH; Koyama, F; Luo, Y, BELLINGHAM, WA: SPIE-INT SOC OPTICAL ENGINEERING , 2006, Vol. 6352, p. U316-U324Conference paper (Refereed)
    Abstract [en]

    Enhanced slow light propagation is predicted in a coupled resonator optical waveguide structure possessing highly dispersive elements using the finite-difference time-domain method. The group velocity is shown to be below 0.01c(0).

  • 2.
    Neff, Curtis W.
    et al.
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics, Photonics.
    Andersson, L. Mauritz
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics, Photonics.
    Qui, Min
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics, Photonics.
    Enhanced Transmission in Dynamically Tuned Optical Microresonator Possessing Highly Dispersive Media2007In: ECIO European Conference on Integrated Optics 2007, 2007, p. WH4-Conference paper (Other academic)
    Abstract [en]

    We present a theoretical study of an opticalmicroresonator system which contains a electromagneticallyinduced transparency medium within the resonator.We find that a time-dependent tuning of thedispersive properties of the resonator medium resultsin an enhanced transmission spectrum.

  • 3.
    Qiu, Min
    et al.
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Neff, Curtis
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Andersson, L. Mauritz
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Coupled resonator optical waveguides with electromagnetically induced transparent media2006In: Technical digest: July 23 - 26, 2006, OSA Headquarters, Washington, DC, USA, Optical Society of America, 2006Conference paper (Refereed)
    Abstract [en]

    We numerically demonstrate ultra slow light in a coupled optical resonator waveguide embedded in a highly dispersive medium. This combination dramatically reduces the propagation speed of light pulses in the structure to below 1% c0.

  • 4.
    Ruan, Zhichao
    et al.
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Yan, Min
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Neff, Curtis W.
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Qiu, Min
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
    Ideal cylindrical cloak: Perfect but sensitive to tiny perturbations2007In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 99, no 11Article in journal (Refereed)
    Abstract [en]

    A cylindrical wave expansion method is developed to obtain the scattering field for an ideal two-dimensional cylindrical invisibility cloak. A near-ideal model of the invisibility cloak is set up to solve the boundary problem at the inner boundary of the cloak shell. We confirm that a cloak with the ideal material parameters is a perfect invisibility cloak by systematically studying the change of the scattering coefficients from the near-ideal case to the ideal one. However, because of the slow convergence of the zeroth-order scattering coefficients, a tiny perturbation on the cloak would induce a noticeable field scattering and penetration.

  • 5.
    Tidström, Jonas
    et al.
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
    Neff, Curtis W.
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
    Andersson, L. Mauritz
    KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
    Photonic crystal cavity embedded in electromagnetically induced transparency media2010In: Journal of Optics, ISSN 2040-8978, E-ISSN 2040-8986, Vol. 12, no 3, p. 035105-Article in journal (Refereed)
    Abstract [en]

    Photonic crystal cavities are known for their high quality factor and small modal volume. Electromagnetically induced transparency (EIT) is known for its dramatic dispersion. We study the fundamental cavity mode of a two-dimensional photonic crystal embedded in an EIT medium. Comparison of finite-difference time-domain simulations with an analytical intracavity-EIT model yields similar results: the modal density of the photonic crystal cavity increases and the cavity resonance is pulled from the empty cavity resonance to the two-photon resonance of the EIT medium. As a consequence, the quality factor may be enhanced by more than two orders of magnitude. For a miniature sized 2.5 lambda x 2.5 lambda photonic crystal cavity based on a 5 x 5 high index rod structure with a missing centre rod, the quality factor can be increased from 200 to 40 000.

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