Interferometric noise characterization and suppression in optical CDMA networks

Yanhua Deng, Katherine Thompson, Mable P. Fok, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A solution for suppressing multiple-access interference and incoherent interferometric noise in 2-D optical code-division multiple access (CDMA) networks is demonstrated using a dispersion-imbalanced loop mirror containing a 15-m heavily GeO2-doped fiber. From the experimental study of the degradation caused by noise, bit-error-rate (BER) measurements in a two-user system having coherent, partially coherent, and incoherent interferometric noise without the dispersion-imbalanced loop mirror exhibit error floors above BER = 10-6. Including the dispersion-imbalanced loop mirror before the receiver allows error-free transmission, and reduces the power penalty from the noise by 7 dB. The solution presented increases the receiver sensitivity and accentuates the flexibility of the optical CDMA networks.

Original languageEnglish (US)
Pages (from-to)981-983
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number14
StatePublished - Jul 15 2009

All Science Journal Classification (ASJC) codes

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


  • Dispersion-imbalanced loop mirror
  • Heavily GeO-doped nonlinear fiber
  • Interferometric noise
  • Optical code-division multiple access (CDMA)


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