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Proceedings Paper

Bit Error Rate Measurement For Evaluation Of A Fiber Optic Link
Author(s): Larry A. Bergman; Alan R. Johnston
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Paper Abstract

Digital fiber optic data link terminal modules are being developed in a number of laboratories, and often the modules take the form of black boxes without convenient access to internal signals. This paper discusses types of measurements which can be made using only the digital terminals of the link. Bit-error-rate (BER) vs signal power data can, of course, provide a means for proving overall link performance, but it can also be used to determine certain internal parameters of the receiver. The theoretical dependence of the BER vs light signal power curve shape on receiver input noise equivalent power and comparator slicing level is discussed. BER vs light signal power measurements obtained with an experimental link are presented and interpreted with the aid of the theoretical curves. The effect of other problems, such as hum or oscillation on the BER data, are mentioned. Sensitivity of the system BER to bit rate is also discussed, with application to determining system operating limits. Since BER measurements are simple to make and can easily be automated, they may prove to be a useful means for either laboratory evaluation or production-line acceptance testing of sealed terminal modules.

Paper Details

Date Published: 23 July 1976
PDF: 10 pages
Proc. SPIE 0077, Fibers and Integrated Optics, (23 July 1976); doi: 10.1117/12.975716
Show Author Affiliations
Larry A. Bergman, Jet Propulsion Laboratory (United States)
Alan R. Johnston, Jet Propulsion Laboratory (United States)


Published in SPIE Proceedings Vol. 0077:
Fibers and Integrated Optics
Henri Hodara, Editor(s)

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