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TIA/EIA-455-50

Revision B, September 1998

Complete Document

FOTP-50 Light Launch Conditions for Long-Length Graded-Index Optical Fiber Spectral Attenuation Measurements

Includes all amendments and changes through Reaffirmation Notice , December 2001


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Superseded By: TIA-455-50

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SEE ALSO NECA/FOA 301 * RENUMBERED TO TIA-455-50
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Description / Abstract:

This procedure establishes the light launch conditions for Class Ia fiber attenuation measurements. Primary uses include FOTP-46, FOTP-53 and FOTP-61.

Either of two methods is allowed. Method A uses overfilled launch conditions along with a mandrel wrap mode filter; Method B uses restricted launch conditions created by beam optics. Both Methods have yielded attenuation values that add approximately linearly in concatenated links.

Values obtained by Methods A and B may not exactly agree, and care must