4×4 wavelength-reconfigurable photonic switch based on thermally tuned silicon microring resonators

Han Yong Ng, Michael R. Wang, Daqun Li, Xuan Wang, Jose Martinez, Roberto R. Panepucci, Kachesh Pathak

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Microring resonators (MRs) are important photonic devices for large-port-count photonic circuits owing to their micrometer-scale device sizes. We describe the implementation of a 4×4 wavelength-reconfigurable photonic switch consisting of eight tunable MRs fabricated on a less expensive material platform: silicon on insulator. Wavelength reconfiguration is achieved through independent thermo-optic tuning of MRs with localized Nichrome microheaters fabricated on the same silicon-on-insulator substrate. A free spectral range of 18nm and a 3-dB linewidth of 0.1nm were observed for the fabricated MRs with a diameter of approximately 10μm. The switch device shows negligible channel crosstalk (<0.01nm) and moderate switching response time (<1ms). The switch can potentially be scaled up to benefit the development of large-scale integrated photonics.

Original languageEnglish (US)
Article number044601
JournalOptical Engineering
Issue number4
StatePublished - 2008


  • microring resonator
  • photonic switch
  • silicon
  • thermo-optic tuning

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)


Dive into the research topics of '4×4 wavelength-reconfigurable photonic switch based on thermally tuned silicon microring resonators'. Together they form a unique fingerprint.

Cite this