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Observation of the acceleration of light in a tapered optical fiber

arXiv.org, 2021-08

2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;http://creativecommons.org/licenses/by/4.0 ;EISSN: 2331-8422 ;DOI: 10.48550/arxiv.2108.04645

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  • Title:
    Observation of the acceleration of light in a tapered optical fiber
  • Author: Ge, Hui ; Chong, Sheng ; Zhu, Shining ; Liu, Hui
  • Subjects: Atoms & subatomic particles ; Bremsstrahlung ; Optical fibers ; Optical waveguides ; Photons ; Physics - General Relativity and Quantum Cosmology ; Physics - Optics ; Refractivity
  • Is Part Of: arXiv.org, 2021-08
  • Description: One of the most fascinating aspects of quantum fields in curved spacetime is the Unruh effect. The direct experimental detection of Unruh temperature has remained an elusive challenge up to now. Gradient optical waveguides manipulating the dispersion of photons are assumed to realize the great acceleration of effective particles, leading to a high effective Unruh temperature. However, experimentally achieving this optical waveguide has not yet been reported. In this work, we exploit a tapered fiber to simulate the accelerated motion of effective particles and obtain an effective Unruh temperature. When light propagating in a tapered fiber is affected by the external high refractive index medium, a leaky phenomenon akin to bremsstrahlung will be observed, and the pattern of leaky radiation is dependent on the acceleration of photons. During the experiments, different accelerations corresponding to different Unruh temperatures are achieved by controlling the shape of the tapered waveguide.
  • Publisher: Ithaca: Cornell University Library, arXiv.org
  • Language: English
  • Identifier: EISSN: 2331-8422
    DOI: 10.48550/arxiv.2108.04645
  • Source: Freely Accessible Journals
    arXiv.org
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
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