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Related Experiment Video

Updated: May 8, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Controlled multiwavelength emission using semiconductor ring lasers with on-chip filtered optical feedback.

Mulham Khoder1, Guy Verschaffelt, Romain Modeste Nguimdo

  • 1Applied Physics Research Group, Vrije Universiteit Brussel, Brussels, Belgium. mulham.khoder@vub.ac.be

Optics Letters
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

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Researchers achieved multiwavelength emission from semiconductor ring lasers using on-chip filtered optical feedback. Balancing effective gain across different modes, controlled by injection current, is key for multiwavelength output.

Area of Science:

  • Optoelectronics
  • Photonics
  • Semiconductor device physics

Background:

  • Semiconductor ring lasers are fundamental optoelectronic devices.
  • Achieving stable multiwavelength emission is crucial for applications like optical communications and spectroscopy.
  • Previous methods for multiwavelength generation often involve complex external cavities or fabrication processes.

Purpose of the Study:

  • To develop an integrated approach for generating multiwavelength emission from semiconductor ring lasers.
  • To investigate the role of filtered optical feedback in achieving multiwavelength output.
  • To identify the key parameters controlling multiwavelength emission in such devices.

Main Methods:

  • Fabrication of semiconductor ring lasers with on-chip filtered optical feedback.

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Last Updated: May 8, 2026

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  • Utilizing two arrayed-waveguide gratings (AWGs) for wavelength splitting and recombination.
  • Experimental characterization and numerical simulations to analyze laser performance.

    • Main Results:

    • Successful demonstration of multiwavelength emission from the integrated semiconductor ring laser.
    • Identification of effective modal gain as the critical factor for multiwavelength operation.
    • Correlation between injection current tuning and the balance of effective modal gain.

    Conclusions:

    • The integrated approach with on-chip filtered feedback provides a viable method for multiwavelength emission.
    • Precise control over effective modal gain, achievable through injection current adjustment, is essential for stable multiwavelength output.
    • This work offers a pathway towards compact and tunable multiwavelength semiconductor laser sources.