Octave-spanning coherent supercontinuum generation in silicon on insulator from 1.06 μm to beyond 2.4 μm
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lsa2017131.pdf
Description
Published version
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942.57 KB
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Author(s)
Singh, Neetesh Kumar
Xin, Ming
Vermeulen, Diedrik Rene Georgette
Shtyrkova, Katia
Li, Nanxi
Callahan, Patrick T
Magden, Emir Salih
Ruocco, Alfonso
Fahrenkopf, Nicholas
Baiocco, Christopher
Date Issued
September 2017
Journal
Light: Science and Applications
Publisher
Springer Science and Business Media LLC
Citation
Singh, Neetesh, et al. "Octave-spanning coherent supercontinuum generation in silicon on insulator from 1.06 μm to beyond 2.4 μm." Light: Science & Applications 7 (September 2017): 17131 © 2018, The Author(s).
Version
Final published version
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 [InlineEquation not available: see fulltext.], 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.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1038/lsa.2017.131
