Silicon integrated multi-mode ring resonator

Mengyuan Ye, Chunlei Sun, Yu Yu*, Yunhong Ding, Xinliang Zhang

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Ring resonator is an essential element in silicon integrated circuit, it is widely used as filter, wavelength multiplexer and switch in single-mode operation regime. As the rapid development of mode division multiplexing (MDM) technique, ring resonator that can process multimode signals simultaneously and uniformly is highly desired. However, the severe modal dispersion makes identical transmission for different modes very hard. In this paper, by breaking through the limitation of conventional multi-mode manipulation design with evanescent coupling or mode interference, we propose and demonstrate a multi-mode ring resonator (MMRR) inspired by the free space geometric optics. Arbitrary number of supporting modes can be achieved by simply widening the waveguide width. For proof-of-concept demonstration, an MMRR supporting four modes is fabricated with uniform transmittance. Furthermore, architecture of cascaded four MMRRs are also demonstrated experimentally.

Original languageEnglish
Issue number2
Pages (from-to)1265-1272
Publication statusPublished - 1 Jan 2021

Bibliographical note

Funding Information:
This work was supported by the National Key Research and Development Program of China (2019YFB1803801, 2019YFB2203502), National Natural Science Foundation of China (61922034, 61911530161), Program for HUST Academic Frontier Youth Team (2018QYTD08).

Publisher Copyright:
© 2021 Mengyuan Ye et al., published by De Gruyter.


  • Geometrical optics
  • Integrated optics devices
  • Multi-mode
  • Ring resonator


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