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High resolution spectral metrology leveraging topologically enhanced optical activity in fibers

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  • Aaron P. Greenberg

    (Boston University)

  • Gautam Prabhakar

    (Boston University
    Aeva Inc)

  • Siddharth Ramachandran

    (Boston University)

Abstract

Optical rotation, a form of optical activity, is a phenomenon employed in various metrological applications and industries including chemical, food, and pharmaceutical. In naturally-occurring, as well as structured media, the integrated effect is, however, typically small. Here, we demonstrate that, by exploiting the inherent and stable spin-orbit interaction of orbital angular momentum fiber modes, giant, scalable optical activity can be obtained, and that we can use this effect to realize a new type of wavemeter by exploiting its optical rotary dispersion. The device we construct provides for an instantaneous wavelength-measurement technique with high resolving power R = 3.4 × 106 (i.e., resolution

Suggested Citation

  • Aaron P. Greenberg & Gautam Prabhakar & Siddharth Ramachandran, 2020. "High resolution spectral metrology leveraging topologically enhanced optical activity in fibers," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18931-6
    DOI: 10.1038/s41467-020-18931-6
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