deposit_your_work

Wavelength encoding to reduce four-wave mixing crosstalk in multi-wavelength channels

Files in this item

Files Size Format View
Guo1996Oct5Wavelength.PDF 180.9Kb application/pdf Thumbnail

Show full item record

Item Metadata

Title: Wavelength encoding to reduce four-wave mixing crosstalk in multi-wavelength channels
Author: Guo, Yuanbin; Aazhang, Behnaam; Young, James F.
Type: Conference paper
Keywords: optical crosstalk; dispersion-shifted fiber (DSF); wavelength-division multiplexing (WDM); four-wave mixing (FWM); spectral code-division multiplexing
Citation: Y. Guo, B. Aazhang and J. F. Young, "Wavelength encoding to reduce four-wave mixing crosstalk in multi-wavelength channels," vol. 2, pp. 230-231, 1996.
Abstract: The trend toward higher bit rates in lightwave communications has increased interest in dispersion-shifted fiber (DSF) to minimize dispersion penalties. In addition, wavelength-division multiplexing (WDM) is being used to gain even greater capacity, and broad bandwidth erbium-doped fiber amplifiers are extending link distances between signal regeneration. Taken together, these techniques can result in severe performance degradation due to four-wave mixing (FWM). Several different ways of reducing the FWM degradation in WDM systems have been proposed, but all of the approaches increase system complexity and make it difficult to add channels to the system. We show that wavelength-coded multiplexing can provide multiple channels on a simple fiber link while significantly reducing four-wave mixing interference compared to a WDM system. The FWM spectrum is symmetric and use of an antisymmetric code cancels the interference. Wavelength-coded multiplexing is also known as spectral code-division multiplexing (SCDM). We have calculated the error probability in the SCDM system considering only shot noise, thermal noise and FWM crosstalk, all of which are assumed to have a Gaussian distribution. For comparison, we also derived an expression for the error probability in a WDM system.
Date Published: 1996-10-20

This item appears in the following Collection(s)

  • ECE Publications [1048 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students