All-optical chromatic dispersion monitoring of a 40-Gb/s RZ signal by measuring the XPM-generated optical tone power in a highly nonlinear fiber

T. Luo, Changyuan Yu, Z. Pan, Y. Wang, J. E. McGeehan, M. Adler, A. E. Willner

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


We experimentally demonstrate an all-optical chromatic dispersion (CD) monitoring technique potential for ultrahigh-speed systems. A monochromatic continuous wave probe is coupled with the tapped-off data signal into a highly nonlinear fiber. An optical tone that is sensitive to CD is generated near the probe wavelength due to the cross-phase modulation effect and is used for CD monitoring. The monitoring window is ±42 ps/nm for 40-Gb/s return-to-zero systems. This monitoring technique is simple and needs no modification at the transmitter.
Original languageEnglish
Pages (from-to)430-432
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number2
Publication statusPublished - 15 Jan 2006
Externally publishedYes


  • CD monitoring
  • Chromatic dispersion (CD)
  • Cross-phase modulation (XPM)
  • Highly nonlinear fiber
  • Optical fiber communication

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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