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Peta-bit-per-second optical communications system using a standard cladding diameter 15-mode fiber.

Georg Rademacher1, Benjamin J Puttnam2, Ruben S Luís2

  • 1Photonic Network Laboratory, Photonic ICT Research Center, National Institute of Information and Communications Technology, Koganei, Tokyo, Japan. georg.rademacher@nict.go.jp.

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|July 10, 2021
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Summary
This summary is machine-generated.

Researchers demonstrated peta-bit-per-second data transmission using multi-mode fibers. This breakthrough combines high-density spatial channels with wideband wavelength-division multiplexing, overcoming limitations of current single-mode fiber systems.

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Area of Science:

  • Optical communications
  • Photonics
  • Telecommunications engineering

Background:

  • Optical fiber networks are experiencing exponential growth in data rates, approaching the peta-bit-per-second (Pbps) scale.
  • Single-mode fiber (SMF) systems are nearing their capacity limits, necessitating advanced multiplexing techniques.
  • Space-division multiplexing (SDM) offers a path to increase per-fiber capacity by utilizing multiple spatial channels.

Purpose of the Study:

  • To demonstrate peta-bit-per-second (Pbps) class transmission in multi-mode fibers (MMF).
  • To overcome the capacity limitations of current single-mode fiber (SMF) transmission systems.
  • To leverage the high spatial channel density of MMF for future high-capacity networks.

Main Methods:

  • Utilized a high mode-count multi-mode fiber (MMF) with optimized wideband transmission characteristics.
  • Employed a wideband optical comb-based transmitter generating 64-quadrature-amplitude modulated (64-QAM) signals across 1528 nm to 1610 nm.
  • Integrated a broadband mode-multiplexer based on multi-plane light conversion technology.

Main Results:

  • Achieved a peta-bit-per-second (Pbps) class data transmission rate.
  • Successfully combined multi-mode fiber (MMF) transmission with wideband wavelength-division multiplexing (WDM).
  • Demonstrated the viability of MMF for ultra-high-capacity optical communication.

Conclusions:

  • Multi-mode fibers (MMFs) combined with wideband wavelength-division multiplexing (WDM) can enable peta-bit-per-second (Pbps) data rates.
  • The developed technologies (wideband transmitter, mode-multiplexer, optimized MMF) are crucial for achieving this capacity.
  • This approach offers a promising solution for future core network demands exceeding single-mode fiber (SMF) capabilities.