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Direct fiber vector eigenmode multiplexing transmission seeded by integrated optical vortex emitters.

Jun Liu1, Shi-Mao Li2, Long Zhu1

  • 1Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.

Light, Science & Applications
|March 7, 2019
PubMed
Summary

Researchers demonstrate direct fiber vector eigenmode multiplexing for optical communications. This method uses integrated optical vortex emitters to generate vector vortex modes, enabling higher capacity and system miniaturization.

Keywords:
fiber vector eigenmodefiber-optic communicationsmultiplexingoptical vortexphotonic integrated devices

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Area of Science:

  • Photonics and Optical Communications
  • Integrated Optics
  • Fiber Optics

Background:

  • Spatial modes are crucial in optical communication, with linearly polarized and phase vortex modes carrying orbital angular momentum synthesized by fiber vector eigenmodes.
  • Improving transmission capacity and miniaturizing communication systems necessitate straightforward fiber vector eigenmode multiplexing and generation of vector vortex modes using integrated photonic devices.

Purpose of the Study:

  • To propose and demonstrate direct fiber vector eigenmode multiplexing transmission seeded by integrated optical vortex emitters.
  • To explore the use of vector vortex modes generated from silicon microring resonators for data-carrying transmission.
  • To assess the performance of this approach in terms of mode crosstalk and link efficiency.

Main Methods:

  • Generation of vector vortex modes (radially and azimuthally polarized beams) using silicon microring resonators etched with angular gratings.
  • Seeding fiber vector eigenmode multiplexing transmission with these integrated optical vortex emitters.
  • Transmission of data through a 2-km large-core fiber.

Main Results:

  • Successful demonstration of data-carrying fiber vector eigenmode multiplexing transmission.
  • Achieved low-level mode crosstalk and favorable link performance over a 2-km fiber.
  • Utilized vector vortex modes generated from integrated photonic devices.

Conclusions:

  • The proposed method enables direct fiber vector eigenmode multiplexing, offering opportunities for capacity scaling in optical communications.
  • Integrated optical vortex emitters provide compact solutions for generating optical vector beams, replacing bulky diffractive optical elements.
  • This technology paves the way for more efficient and miniaturized optical communication systems.