Ultracompact microring laser-based optical-add multiplexer

Abdeldjalil Bennecer, J D Ingham, K A Williams, R V Penty, I H White, H Ehlers, M Hamacher, H Heidrich

Research output: Contribution to JournalArticle


A highly compact and scalable micro-ring-laser-based optical-add multiplexer is presented for wavelength division multiplexed bus networks. The output of a 40 mm-radius micro-ring laser is vertically coupled to a passive waveguide bus and the chip is subsequently mounted in a butterfly package with fibre pigtailing at both input and output. In the first such experiment with a micro-ring-based module, a wavelength channel is added into a wavelength multiplexed fibre-optic link with negligible power penalty. Successful transmission of a 2λ x 2.5 Gbit/s signal over 25 km is demonstrated for a 0.9 nm channel spacing.
Original languageEnglish
Article number9
Pages (from-to)593 – 595
Number of pages3
JournalElectronics Letters
Issue number9
Publication statusPublished - 24 Apr 2008



  • Multiplexing equipment
  • optical fibre networks
  • wavelength division multiplexing
  • optical-add multiplexer
  • ultracompact microring laser-based
  • wavelength division multiplexed bus networks
  • multiplexed fibre-optic link
  • passive waveguide bus

Cite this

Bennecer, A., Ingham, J. D., Williams, K. A., Penty, R. V., White, I. H., Ehlers, H., Hamacher, M., & Heidrich, H. (2008). Ultracompact microring laser-based optical-add multiplexer. Electronics Letters, 44(9), 593 – 595. [9]. https://doi.org/10.1049/el:20080562