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    Octave-spanning coherent supercontinuum generation in silicon on insulator from 1.06μm to beyond 2.4μm

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    Octave-spanning coherent supercontinuum_Final.pdf (1023.Kb)
    Date
    2018
    Author
    Singh, Neetesh
    Xin, Ming
    Vermeulen, Diedrik
    Shtyrkova, Katia
    Li, Nanxi
    Callahan, Patrick T.
    Magden, Emir Salih
    Ruocco, Alfonso
    Fahrenkopf, Nicholas
    Baiocco, Christopher
    Kuo, Bill P-P
    Radic, Stojan
    Ippen, Erich
    Kärtner, Franz X.
    Watts, Michael R.
    Publisher
    Changchun Institute of Optics, Fine Mechanics and Physics
    Metadata
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    Subject
    coherence
    integrated photonics
    silicon
    supercontinuum
    insulation
    semiconductor
    Abstract
    Efficient complementary metal-oxide semiconductor-based nonlinear optical devices in the near-infrared are in strong demand. Due to two-photon absorption in silicon, however, much nonlinear research is shifting towards unconventional photonics platforms. In this work, we demonstrate the generation of an octave-spanning coherent supercontinuum in a silicon waveguide covering the spectral region from the near- to shortwave-infrared. With input pulses of 18 pJ in energy, the generated signal spans the wavelength range from the edge of the silicon transmission window, approximately 1.06 to beyond 2.4 μm, with a − 20 dB bandwidth covering 1.124–2.4 μm. An octave-spanning supercontinuum was also observed at the energy levels as low as 4 pJ (−35 dB bandwidth). We also measured the coherence over an octave, obtaining gð1Þ 12 l ð Þ >90%, in good agreement with the simulations. In addition, we demonstrate optimization of the third-order dispersion of the waveguide to strengthen the dispersive wave and discuss the advantage of having a soliton at the long wavelength edge of an octave-spanning signal for nonlinear applications. This research paves the way for applications, such as chip-scale precision spectroscopy, optical coherence tomography, optical frequency metrology, frequency synthesis and wide-band wavelength division multiplexing in the telecom window.
    URI
    http://hdl.handle.net/1951/69658
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    • SUNY Polytechnic Institute Faculty and Staff Research, Publications, and Creative Works [63]

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