Photonic Quasi-crystal Fiber for Orbital Angular Momentum Modes with Ultra-flat Dispersion

Kim, Myunghwan;Kim, Soeun

  • Received : 2019.04.30
  • Accepted : 2019.06.08
  • Published : 2019.08.25


We propose a photonic quasi-crystal fiber (PQF) for supporting up to 14 orbital angular momentum (OAM) modes with low and ultra-flat dispersion characteristics over the C+L bands. The designed PQF which consists of a large hollow center and quasi structural small air holes in the clad region exhibits low confinement losses and a large effective index separation (>$10^{-4}$) between the vector modes. This proposed fiber could potentially be exploited for mode division multiplexing and other OAM mode applications in fibers.


Optical orbital angular momentum;Photonic quasi-crystal fiber;Near zero flattened dispersion


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Supported by : National Research Foundation of Korea (NRF)