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Proceedings Paper

Fiber Optic System Reflection Noise
Author(s): Joyce Kilmer; B. A. Mortimer
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Paper Abstract

As fiber optic transmission technology matures, its development interestingly tracks that of the millimeter and microwave technology of 30 to 40 years ago. Since return loss and multipath interference were found to be of concern in those systems, it is not surprising to learn that reflections present in fiber optic spans can cause similar problems in the single-mode fiber optic transmission systems of today. Analogous to the return loss issue, a single reflection point can reflect light back into the transmitter and disrupt the laser source's spectrum. Multiple reflection points meanwhile, can cause delayed signals that interfere with the transmitted signal, much like the interference caused by multiple signal paths. This interference appears as noise at the receiver, and we will refer to it as multiple-reflection noise (MRN). Several systems have been investigated for sensitivities to reflection induced noise. The results of these system measurements are summarized and the various system dependencies are categorized. By placing reflectance requirements on the individual components placed in the fiber optic transmission span and requiring system performance to have a tolerance to specified reflectance levels, the effects of reflection noise on fiber optic transmission systems can be minimized.

Paper Details

Date Published: 23 January 1990
PDF: 8 pages
Proc. SPIE 1180, Tests, Measurements, and Characterization of Electro-Optic Devices and Systems, (23 January 1990); doi: 10.1117/12.963451
Show Author Affiliations
Joyce Kilmer, Bell Communications Research (United States)
B. A. Mortimer, Bell Communications Research (United States)


Published in SPIE Proceedings Vol. 1180:
Tests, Measurements, and Characterization of Electro-Optic Devices and Systems
Shekhar G. Wadekar, Editor(s)

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