High Resolution Spectral Metrology Leveraging Topologically Enhanced Optical Activity in Fibers
| Autor: | Gautam Prabhakar, Siddharth Ramachandran, Aaron P. Greenberg |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Angular momentum
Materials science Fibre optics and optical communications Optical metrology Science General Physics and Astronomy Physics::Optics FOS: Physical sciences 01 natural sciences Article General Biochemistry Genetics and Molecular Biology 010309 optics Optical physics Optics 0103 physical sciences Dispersion (optics) Fiber Sensitivity (control systems) Optical techniques Optical rotation lcsh:Science 010306 general physics Multidisciplinary business.industry Resolution (electron density) General Chemistry Metrology Wavelength lcsh:Q business Physics - Optics Optics (physics.optics) |
| Zdroj: | Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020) Nature Communications |
| DOI: | 10.48550/arxiv.2007.05633 |
| Popis: | 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 $R =3.4 \times 10^6$ (i.e. resolution $< 0.3 pm$ at $1-{\mu}m$ wavelengths) and can also detect spectral bandwidths of known lineshapes with high sensitivity. Comment: 27 pages, 12 figures, Supplementary materials, presented at CLEO 2019 and 2020 |
| Databáze: | OpenAIRE |
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