Semiconductor micro-ring and micro-disk lasers for all-optical switching

Marc Sorel, Gábor Mezosi, Michael J Strain

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)


We review and compare recent results on the design and fabrication of semiconductor microring and microdisk lasers for applications in all-optical switching and signal processing. The design of the optical cavities will be analyzed in detail with a strong emphasis on the evaluation of the various loss mechanisms. Both lithographic and etching technologies were thoroughly optimized to ensure high-resolution patterning and deep and vertical waveguide sidewalls. The majority of the fabricated devices exhibited continuous wave operation down to 7 μm and strong unidirectional bistability down to device footprints as small as 30 μm. While both microdisks and microrings show similar behaviour for medium radii (30-60 μm), in smaller devices the microdisk geometry shows much lower losses and better performance.
Original languageEnglish
Title of host publicationProceedings of SPIE 7230, Novel In-Plane Semiconductor Lasers VIII, 72300I
EditorsAlexey A. Belyanin, Peter M. Smowton
Place of PublicationSan Jose
Publication statusPublished - 24 Jan 2009


  • semiconductor micro-ring
  • micro-disk lasers
  • all-optical switching


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