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Browse Prior Art Database

Testing Optical Fibers

IP.com Disclosure Number: IPCOM000095300D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Donath, E: AUTHOR

Abstract

Optical fiber bundles frequently contain as many as 500,000 fibers in a 3/8th inch diameter bundle. When the bundle is subjected to dynamic vibration, external forces can cause one or more fibers to break or, perhaps, change their relative positions within the bundle. This method detects the breakage or change of even a single fiber. Such is by recording a transparent photographic positive prior to any dynamic vibration of the bundle. Then, after the bundle is used a transparent photographic negative is made. The two photographs are superimposed and placed on a light table. Any change in a single fiber can be determined, since the two photographs are not opaque at a point of change, and light shines through the transparent photograph.

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Testing Optical Fibers

Optical fiber bundles frequently contain as many as 500,000 fibers in a 3/8th inch diameter bundle. When the bundle is subjected to dynamic vibration, external forces can cause one or more fibers to break or, perhaps, change their relative positions within the bundle. This method detects the breakage or change of even a single fiber. Such is by recording a transparent photographic positive prior to any dynamic vibration of the bundle. Then, after the bundle is used a transparent photographic negative is made. The two photographs are superimposed and placed on a light table. Any change in a single fiber can be determined, since the two photographs are not opaque at a point of change, and light shines through the transparent photograph.

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