Statistics of Electrical Dispersion Compensator Penalties of 10-Gb/s Multimode Fiber Links With Offset Connectors

• Published in: IEEE photonics technology letters Vol. 19; no. 9; pp. 689 - 691
• Main Authors: Yu Sun, Hallemeier, P., Ereifej, H., Sinkin, O.V., Marks, B.S., Menyuk, C.R.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2007; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Channels; Connectors; Decision feedback equalizers; Dispersion; Dispersions; electrical dispersion compensator; Ethernet networks; Fibers; Links; Mathematical models; mode delays; multimode transmission line; Offsets; Optical feedback; optical transmission; Signal detection; Signal processing; Speckle; Statistics; Sun
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2007.894356

In this letter, we investigate the penalty after a 10-Gb/s Ethernet signal is detected and processed. We study the statistics of ideal electrical dispersion-compensation (EDC) performance, measured by the penalty of an ideal decision feedback equalizer (PIE-D), of 300-m multimode fiber links to determine the theoretically best possible EDC performance. We calculate the channel responses using two methods: the individual-mode method and the average-mode method. We find a strong dependence of the PIE-D value on the channel model that is used, especially when there is a connector with a large offset in the link. In system design, one should choose a suitable channel model, taking into account the length of the fiber, the magnitude of offset, and the percentage of coverage