Ultracompact corner-mirrors and T-branches in silicon-on-insulator

Ahmad, Rauf; Pizzuto, F.; Camarda, G. S.; Espinola, Richard L.; Rao, Hongling; Osgood, Richard M.

doi:10.1109/68.974163

Cited by 92 publications

(40 citation statements)

References 12 publications

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“…The real part of the susceptibilityχ (3) describes parametric optical processes such as SPM, XPM, and FWM, while the imaginary part ofχ (3) corresponds to TPA and XAM. Note that in this study we neglect the stimulated Raman scattering effect as it is assumed that the frequencies of the interacting pulses do not satisfy the condition required for an efficient, resonant Raman interaction.…”

Section: B Perturbations Of the Photonic Crystal Waveguidementioning

confidence: 99%

“…The driving forces behind research in this area are the perceived limitations at high frequency of currently used copper interconnects [1], combined with a rapidly increasing demand to move huge amounts of data within increasingly more confined yet increasingly intricate communication architectures. An approach showing great potential towards developing optical interconnects at chip scale is based on high-index contrast optical waveguides, such as silicon photonic waveguides (SiPhWGs) implemented on the silicon-on-insulator material platform [2,3]. Among key advantages provided by this platform are the increased potential for device integration facilitated by the enhanced confinement of the optical field achievable in high-index contrast photonic structures, as well as the particularly large optical nonlinearity of silicon, which makes it an ideal material for active photonic devices.…”

Section: Introductionmentioning

confidence: 99%

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Theory of pulsed four-wave mixing in one-dimensional silicon photonic crystal slab waveguides

Lavdas

Panoiu

2016

Phys. Rev. B

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We present a comprehensive theoretical analysis and computational study of four-wave mixing (FWM) of optical pulses co-propagating in one-dimensional silicon photonic crystal waveguides (SiPhCWGs). Our theoretical analysis describes a very general set-up of the interacting optical pulses, namely we consider nondegenerate FWM in a configuration in which at each frequency there exists a superposition of guiding modes. We incorporate in our theoretical model all relevant linear optical effects, including waveguide loss, free-carrier (FC) dispersion and FC absorption, nonlinear optical effects such as self-and cross-phase modulation (SPM, XPM), two-photon absorption (TPA), and cross-absorption modulation (XAM), as well as the coupled dynamics of FCs and optical field. In particular, our theoretical analysis based on the coupled-mode theory provides rigorously derived formulae for linear dispersion coefficients of the guiding modes, linear coupling coefficients between these modes, as well as the nonlinear waveguide coefficients describing SPM, XPM, TPA, XAM, and FWM. In addition, our theoretical analysis and numerical simulations reveal key differences between the characteristics of FWM in the slow-and fast-light regimes, which could potentially have important implications to the design of ultra-compact active photonic devices.

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Section: B Perturbations Of the Photonic Crystal Waveguidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theory of pulsed four-wave mixing in one-dimensional silicon photonic crystal slab waveguides

Lavdas

Panoiu

2016

Phys. Rev. B

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“…• abrupt bends, T-junctions (Espinola et al 2001;Ahmad et al 2002) and Mach-Zehnder structures (Zhao et al 1995). For wavelength selective functionalities, photonic wires with periodic variation of the waveguide-width and/or depth can be employed (Krauss et al 1997;Foresi et al 1997;Lalanne and Hugonin 2003;Jugessur et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Modelling of Photonic Wire Bragg Gratings

Gnan

Bellanca

Chong³

et al. 2006

Opt Quant Electron

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Abstract. Some important properties of photonic wire Bragg grating structures have been investigated. The design, obtained as a generalisation of the full-width gap grating, has been modelled using 3D finite-difference time-domain simulations. Different types of stop-band have been observed. The impact of the grating geometry on the lowest order (longest wavelength) stop-band has been investigated -and has identified deeply indented configurations where reduction of the stop-bandwidth and of the reflectivity occurred. Our computational results have been substantially validated by an experimental demonstration of the fundamental stop-band of photonic wire Bragg gratings fabricated on silicon-on-insulator material. The accuracy of two distinct 2D computational models based on the effective index method has also been studied -because of their inherently much greater rapidity and consequent utility for approximate initial designs. A 2D plan-view model has been found to reproduce a large part of the essential features of the spectral response of full 3D models.

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“…The light is guided by total internal reflection. The tight confinement allows for compact elements, like sharp bends, corner mirrors [4], and ring resonators [5]. However, the performance is limited by the scattering at sidewall roughness, so these waveguides require very good processing.…”

Section: A General Propertiesmentioning

confidence: 99%

Nanophotonic waveguides in silicon-on-insulator fabricated with CMOS technology

Bogaerts

Baets

Dumon

et al. 2005

J. Lightwave Technol.

647

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Abstract-High-index-contrast, wavelength-scale structures are key to ultracompact integration of photonic integrated circuits. The fabrication of these nanophotonic structures in silicon-on-insulator using complementary metal-oxide-seminconductor processing techniques, including deep ultraviolet lithography, was studied. It is concluded that this technology is capable of commercially manufacturing nanophotonic integrated circuits. The possibilities of photonic wires and photonic-crystal waveguides for photonic integration are compared. It is shown that, with similar fabrication techniques, photonic wires perform at least an order of magnitude better than photonic-crystal waveguides with respect to propagation losses. Measurements indicate propagation losses as low as 0.24 dB/mm for photonic wires but 7.5 dB/mm for photonic-crystal waveguides.

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Ultracompact corner-mirrors and T-branches in silicon-on-insulator

Cited by 92 publications

References 12 publications

Theory of pulsed four-wave mixing in one-dimensional silicon photonic crystal slab waveguides

Theory of pulsed four-wave mixing in one-dimensional silicon photonic crystal slab waveguides

Modelling of Photonic Wire Bragg Gratings

Nanophotonic waveguides in silicon-on-insulator fabricated with CMOS technology

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