Directly modulated wavelength-multiplexed integrated microring laser array

A. Bennecer, K. A. Williams, R. V. Penty, I. H. White, M. Hamacher, H. Heidrich

Research output: Contribution to journalArticlepeer-review

19 Citations (SciVal)


The first demonstration of a directly modulated microring laser array is presented for on-off keyed, wavelength- division- multiplexed fiber-optic data transmission. GaInAsP-InP microring resonators oscillating at separate wavelengths in the 1.5-μm band are vertically coupled to a common passive waveguide bus, which is fabricated on the reverse side of the InP membrane. Two microrings defined with radii for a wavelength channel separation of 6 nm have been assessed for both individual and simultaneous operation. Negligible power penalty (<0.2 dB) is observed for wavelength-division-multiplexed operation with and without transmission over a 25-km fiber span in a manner which indicates low crosstalk between the integrated sources. A device area of less than 0.12 mm 2 per microring on a common passive bus allows a highly scalable solution for short-reach wavelength-multiplexed links.

Original languageEnglish
Pages (from-to)1411-1413
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number16
Publication statusPublished - 15 Aug 2008


  • Integrated optoelectronics
  • Laser arrays
  • Microresonators
  • Wavelength-division multiplexing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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