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WDM-compatible mode-division multiplexing on a silicon chip.

Lian-Wee Luo1, Noam Ophir2, Christine P Chen3

  • 11] School of Electrical and Computer Engineering, Cornell University, 428 Phillips Hall, Ithaca, New York 14853, USA [2].

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Summary
This summary is machine-generated.

Researchers demonstrate on-chip mode-division multiplexing (MDM) compatible with wavelength-division multiplexing (WDM) using microrings. This breakthrough achieves low inter-modal crosstalk and loss, paving the way for significantly higher data rates in integrated photonics.

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Area of Science:

  • Photonics
  • Integrated Optics
  • Optical Communications

Background:

  • Current optical-fibre research focuses on mode-division multiplexing (MDM) with wavelength-division multiplexing (WDM) to boost bandwidth.
  • Integrated photonics predominantly operates in the single-mode regime, limiting bandwidth scalability.
  • Implementing MDM in integrated photonics is challenging due to difficulties in selective high-order mode coupling and high inter-modal crosstalk.

Purpose of the Study:

  • To demonstrate the first microring-based, WDM-compatible MDM system on a chip.
  • To achieve low modal crosstalk and loss in an integrated MDM system.
  • To explore the potential for significantly increasing aggregate data rates in on-chip communication.

Main Methods:

  • Utilized microring resonators for on-chip mode manipulation.
  • Developed a method for selective coupling to high-order modes.
  • Integrated MDM with WDM functionalities on a single chip.

Main Results:

  • Achieved the first on-chip demonstration of WDM-compatible MDM using microrings.
  • Successfully reduced modal crosstalk and optical loss.
  • Showcased a viable approach for enhancing on-chip communication bandwidth.

Conclusions:

  • Microring-based MDM offers a promising solution for overcoming bandwidth limitations in integrated photonics.
  • The developed technique enables WDM-compatible MDM with low crosstalk and loss.
  • This advancement has the potential to dramatically increase aggregate data rates for on-chip ultrahigh bandwidth communications.