Link performance optimization of chip-based Si3N4 microwave photonic filters

Yang Liu (Corresponding Author), David Marpaung, Amol Choudhary, Jason Hotten, Benjamin J. Eggleton, Yang Liu

Research output: Contribution to journalArticleAcademicpeer-review

49 Citations (Scopus)
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Simultaneously achieving high link performance and advanced microwave photonic processing functionalities in compact integrated circuits is crucial but challenging for the deployment in future and existing practical applications. In this paper, we present the first comprehensive experimental study to optimize the link performance of a Si3N4 -photonic-chip-based microwave photonic notch filter. This systematic study leads to an optimized link performance of the chip-based filter, demonstrating an RF net gain, a sub-20-dB noise figure and an overall third-order spurious-free dynamic range of 115 dB.Hz 2/3 over a frequency range of 0-12 GHz, in conjunction with advanced filtering functionalities with a notch rejection >50 dB. The achieved performance is based on a unique and low-loss chip-based filter scheme which offers the compatibility with existing link performance optimization techniques, while maintaining the advanced notch filter functionality. Numerical calculations are also performed to explore the future feasibility of implementing a fully integrated microwave photonic filter that approaches the same level of link performance demonstrated in this work. This study is expected to provide a feasible design route to approach fully integrated microwave photonic filters with high link performance.
Original languageEnglish
Article number8370083
Pages (from-to)4361-4370
Number of pages10
JournalJournal of lightwave technology
Issue number19
Early online date31 May 2018
Publication statusPublished - 2018
Externally publishedYes


  • Dynamic range
  • Link performance
  • Microwave photonics
  • Noise figure
  • Photonic integrated circuits


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