An Optically Controlled Co-Planar Waveguide Millimeter-Wave Switch

Weiran Pang, Chris Gamlath, Martin Cryan

Research output: Contribution to journalArticle (Academic Journal)peer-review

6 Citations (Scopus)
287 Downloads (Pure)


This letter demonstrates an optically controlled coplanar waveguide switch operating in the millimeter-wave region. Full-wave electromagnetic analysis used a multilayer model to simulate the photoinduced plasmas and a good agreement between measured and simulated results has been achieved. The insertion loss is less than 4 dB and isolation is greater than 15 dB from 32-50 GHz. This approach requires the use of 175 mW of optical power at a wavelength 980 nm, but it removes the need for bandwidth limiting electrical bias networks.

Original languageEnglish
Pages (from-to)669-671
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number8
Early online date13 Jun 2018
Publication statusPublished - Aug 2018


  • Coplanar waveguide (CPW)
  • Coplanar waveguides
  • Lighting
  • Microwave circuits
  • millimeter wave (mmW)
  • optical switch
  • Optical switches
  • optically induced plasmas (OIP).
  • Plasmas
  • Silicon


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