TIA adopts chromatic dispersion guideline

April 12, 2004 - Document provides methods of representing the process statistics of the chromatic dispersion of optical fibers and related components.

Apr 12th, 2004

The Telecommunications Industry Association has adopted an IEC technical report that acts as a guideline providing methods of representing the process statistics of the chromatic dispersion of optical fibers and related components that may be combined in a link.

The report is TR 61280-7 Fiber Optic Communication System Design Guides -- Part 7: Statistical Calculation of Chromatic Dispersion, TIA/TR-1028.

Chromatic dispersion (ps/nm) is the derivative, with respect to wavelength, of the group delay (ps) induced by the spectral content of light propagating through an optical element or fiber. Chromatic dispersion is normally a function of wavelength and can be either positive (group delay increasing with wavelength) or negative (group delay decreasing with wavelength).

The presence of chromatic dispersion can induce distortions in signals leading to bit errors depending on source spectral width, source chirp, bit period and/or distance. Chromatic dispersion is also interactive with the effects of non-linear optical effects and second-order polarization mode dispersion (PMD). This document provides methods to calculate the distribution statistics of concatenated links based on information on the distributions of different fiber or component populations.

The TIA is based in Arlington, VA. For more information visit www.tiaonline.org.

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