On-chip, CMOS-compatible, hardware-compressive integrated photonic beamformer based on WDM

Maurizio Burla, Leimeng Zhuang, David Marpaung, Muhammad Rezaul Khan, Arne Leinse, Willem Beeker, Marcel Hoekman, Rene Heideman, Chris Roeloffzen

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

4 Citations (Scopus)


We propose and experimentally demonstrate a novel, hardware-compressive architecture for broadband and continuously tunable integrated optical true-time-delay beamformers. The architecture is based on on-chip wavelength division multiplexing (WDM) that, in conjunction with the frequency-periodic response of optical ring resonator (ORR) filters, dramatically reduces the network complexity and, in turn, its area occupation on the wafer. This allows the integration of an unprecedented number of delay channels on a single chip, overcoming the main limitation of current integrated beamformers, that is, the limited capability to feed very large arrays when using a single chip. Based on this technique, a novel device is realized with TriPleXTM waveguide technology, using CMOS-compatible fabrication equipment, and its functionality is demonstrated over the instantaneous 2-10 GHz bandwidth. At the best of our knowledge, this results represent at the same time the record instantaneous bandwidth (8 GHz) for an optical beamformer based on optical ring resonators (ORR), and the first demonstration of an integrated beamformer where signals from different antenna elements are processed simultaneously by individual delay lines, exploiting the periodic response of ORRs.

Original languageEnglish
Title of host publication2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
PublisherIEEE Computer Society
Number of pages4
ISBN (Print)9781467360715
Publication statusPublished - 2013
Externally publishedYes
EventIEEE International Topical Meeting on Microwave Photonics (MWP) 2013 - Hotel Monaco Alexandria, Alexandria, United States of America
Duration: 28 Oct 201331 Oct 2013
https://ieeexplore.ieee.org/xpl/conhome/6712976/proceeding (Proceedings)


ConferenceIEEE International Topical Meeting on Microwave Photonics (MWP) 2013
Abbreviated titleMWP 2013
CountryUnited States of America
Internet address


  • microwave photonics
  • optical beamforming
  • optical delay lines
  • phased arrays
  • resonators
  • tunable delay

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