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Optica Publishing Group
  • Current Optics and Photonics
  • Vol. 3,
  • Issue 4,
  • pp. 298-303
  • (2019)

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

Open Access Open Access

Abstract

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.

© 2019 Optical Society of Korea

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