High-Selectivity On-Chip Optical Bandpass Filter With Sub-100-MHz Flat-Top and Under-2 Shape Factor

Caterina Taddei*, Leimeng Zhuang, Chris G.H. Roeloffzen, M. Hoekman, Klaus-J. Boller

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

We demonstrate a fully tunable microwave photonic bandpass filter fabricated with Si3N4/SiO2 waveguides on a chip. The filter is based on coupled resonator optical waveguide architecture comprising a chain of eight coupled ring resonators, each with an optical roundtrip length of 21 cm (free spectral range of 1.4 GHz), with an adjustable resonance frequency, and with adjustable power coupling. The passband shows a 3-dB bandwidth of 72 MHz with at least 51-dB out-of-band rejection and features simultaneously a flat-top, a shape factor of 1.9, and a group delay variation smaller than 2 ns.
Original languageEnglish
Article number8636516
Pages (from-to)455-458
Number of pages4
JournalIEEE photonics technology letters
Volume31
Issue number6
DOIs
Publication statusPublished - 15 Mar 2019

Keywords

  • Integrated optics
  • Microwave photonic filter
  • MWP filter
  • CROW
  • Optical waveguide filters
  • Resonator filter

Fingerprint Dive into the research topics of 'High-Selectivity On-Chip Optical Bandpass Filter With Sub-100-MHz Flat-Top and Under-2 Shape Factor'. Together they form a unique fingerprint.

  • Cite this