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Proceedings Paper

Solution To OTDR Limitations For Automated Measurement
Author(s): Eugene Edwards; Jack Horton; Paul B. Ruffin
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Paper Abstract

An effective measurement method for investigating the transmission characteristics of an optical fiber segment using automated backscattering techniques is described in this paper. Three different Optical Time Domain Reflectometers (OTDRs) are employed in the manual and automated modes of operation to characterize several single mode fibers. Length dependent optical loss measurements are made on several precision-wound fiber optic bobbins (containing many layers) by setting the distance markers at the start and end locations which bound the desired fiber segment. Discrepancies are observed in the data acquired using the manual vs the automated procedure. Apparent round-off errors and inaccurate measurements are observed when operating the OTDR in the automated mode due to the elimination of the operator's observations and adjustments. Algorithms are written to automatically frame the fiber segment of interest by monitoring the actual OTDR marker settings and adjusting the marker setting request(s) when the fiber segment boundaries are violated by the OTDR. This novel framing technique ensures consistent and precise measurements. The technique can provide assistance in using OTDRs in the automated mode of operation.

Paper Details

Date Published: 23 January 1990
PDF: 11 pages
Proc. SPIE 1180, Tests, Measurements, and Characterization of Electro-Optic Devices and Systems, (23 January 1990); doi: 10.1117/12.963453
Show Author Affiliations
Eugene Edwards, U. S. Army Missile Command (United States)
Jack Horton, Science & Technoloav, Inc. (United States)
Paul B. Ruffin, U. S. Army Missile Command (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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