Linearized integrated microwave photonic circuit for filtering and phase shifting

Gaojian Liu, Kaixuan Ye, Okky Daulay, Qinggui Tan, Hongxi Yu, David Marpaung

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
10 Downloads (Pure)


Photonic integration, advanced functionality, reconfigurability, and high radio frequency (RF) performance are key features in integrated microwave photonic systems that are still difficult to achieve simultaneously. In this work, we demonstrate an integrated microwave photonic circuit that can be reconfigured for two distinct RF functions, namely, a tunable notch filter and a phase shifter. We achieved > 50 dB high-extinction notch filtering over 6-16 GHz and 2π continuously tunable phase shifting over 12-20 GHz frequencies. At the same time, we implemented an on-chip linearization technique to achieve a spurious-free dynamic range of more than 120 dB · Hz 4/5 for both functions. Our work combines multi-functionality and linearization in one photonic integrated circuit and paves the way to reconfigurable RF photonic front-ends with very high performance.

Original languageEnglish
Article number051303
Number of pages7
JournalAPL Photonics
Issue number5
Publication statusPublished - 1 May 2023


  • Electronic filters
  • Radiowave and microwave technology
  • Signal processing
  • Noise floor
  • Telecommunications engineering
  • Optical phase shifters
  • Photodetectors
  • Optical field
  • Photonic integrated circuits


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