Multiplexed single-mode wavelength-to-time mapping of multimode light

Harikumar K. Chandrasekharan, Frauke Izdebski, Itandehui Gris-Sánchez, Nikola KrstajiÄ, Richard Walker, Helen L. Bridle, Paul A. Dalgarno, William N. MacPherson, Robert K. Henderson, Tim A. Birks, Robert R. Thomson

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

When an optical pulse propagates along an optical fibre, different wavelengths travel at different group velocities. As a result, wavelength information is converted into arrival-time information, a process known as wavelength-to-time mapping. This phenomenon is most cleanly observed using a single-mode fibre transmission line, where spatial mode dispersion is not present, but the use of such fibres restricts possible applications. Here we demonstrate that photonic lanterns based on tapered single-mode multicore fibres provide an efficient way to couple multimode light to an array of single-photon avalanche detectors, each of which has its own time-to-digital converter for time-correlated single-photon counting. Exploiting this capability, we demonstrate the multiplexed single-mode wavelength-to-time mapping of multimode light using a multicore fibre photonic lantern with 121 single-mode cores, coupled to 121 detectors on a 32 × 32 detector array. This work paves the way to efficient multimode wavelength-to-time mapping systems with the spectral performance of single-mode systems.

Original languageEnglish
Article number14080
Pages (from-to)1-10
Number of pages10
JournalNature Communications
Volume8
Early online date25 Jan 2017
DOIs
Publication statusPublished - 25 Jan 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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    Chandrasekharan, H. K., Izdebski, F., Gris-Sánchez, I., KrstajiÄ, N., Walker, R., Bridle, H. L., Dalgarno, P. A., MacPherson, W. N., Henderson, R. K., Birks, T. A., & Thomson, R. R. (2017). Multiplexed single-mode wavelength-to-time mapping of multimode light. Nature Communications, 8, 1-10. [14080]. https://doi.org/10.1038/ncomms14080