A new scheme for novel all-optical wavelength conversion with ultrabroad conversion tunability and modulation-transparency

Kang Li, Nigel Copner, Jungang Huang, Juan Martinez, Yongkang Gong, Sara Carver, Daniel Rees-Whippey

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A scheme named “spoof” four wave mixing (SFWM) is proposed, where a dynamic refractive index grating induced by the beating of the co-propagating pump and signal is able to modulate a Bragg grating (BG) to create additional reflective peaks (ARPs) at either side of the unperturbed BG bandgap. When a probe wave located at the wavelength of ARPs is counter-propagating, it is reflected from the induced ARPS while tracking the signal data information but at the new wavelength. In contrast to the well-known FWM, 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 BG to excite ARPS 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 novel all-optical wavelength conversion with modulation format transparency and ultrabroad conversion range, which represents a major advantage for next generation of all-optical networks.
Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationNext-Generation Optical Communication: Components, Sub-Systems, and Systems II
Place of PublicationBellingham, Washington
ISBN (Print)9780819494160
Publication statusPublished - 2013

Publication series

NameProceedings of SPIE
PublisherSociety of Photo-Optical Instrumentation Engineers
ISSN (Print)0277-786X


  • Modulation
  • Transparency
  • Refractive index
  • Networks
  • Photons
  • Reflection


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