High resolution spectral metrology leveraging topologically enhanced optical activity in fibers

Aaron P. Greenberg, Gautam Prabhakar and Siddharth Ramachandran ()
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Aaron P. Greenberg: Boston University
Gautam Prabhakar: Boston University
Siddharth Ramachandran: Boston University

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: 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

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18931-6

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DOI: 10.1038/s41467-020-18931-6

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