Spoof four-wave mixing for all-optical wavelength conversion

Yongkang Gong, Jungang Huang, Kang Li, Juan Martinez, Nigel Copner, Leirang Wang, Tao Duan, Wenfu Zhang, W. H. Loh

Research output: Contribution to journalArticlepeer-review


We present for the first time an all-optical wavelength conversion (AOWC) scheme supporting modulation format independency without requiring phase matching. The new scheme is named “spoof” four wave mixing (SFWM) and in contrast to the well-known FWM theory, where the induced dynamic refractive index grating modulates photons to create a wave at a new frequency, the SFWM is different in that the dynamic refractive index grating is generated in a nonlinear Bragg Grating (BG) to excite additional reflective peaks at either side of the original BG bandgap in reflection spectrum. This fundamental difference enable the SFWM to avoid the intrinsic shortcoming of stringent phase matching required in the conventional FWM, and allows AOWC with modulation format transparency and ultrabroad conversion range, which may have great potential applications for next generation of all-optical networks.
Original languageEnglish
Pages (from-to)24030 - 24037
Number of pages7
JournalOptics Express
Issue number21
Publication statusPublished - 8 Oct 2012


  • wavelength coversion
  • signal processing
  • refractive index
  • optical networks
  • Cross phase modulation
  • Effective refractive index


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