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Test for Optical Fiber Connector With Statistical Analysis of Losses As a Function of Angular Position of Connector Parts

IP.com Disclosure Number: IPCOM000040410D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Danziger, L: AUTHOR [+2]

Abstract

This test is performed on optical fiber cables that have connectors at each end. In a first step of the test, a first cable is connected between a light source and a light receiver, and the light at the receiver is recorded. The amount of light measured at the receiver is reduced by the losses at the connection to the light source and the losses in the first fiber cable. It is also reduced by the losses at the light receiver, but these losses are negligible because the light receiver is larger than the cone of light from the end of the fiber. The first measurement is used as a reference, and the losses in the connection to the light source and losses in the fiber are thereby canceled in the final test results.

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Test for Optical Fiber Connector With Statistical Analysis of Losses As a Function of Angular Position of Connector Parts

This test is performed on optical fiber cables that have connectors at each end. In a first step of the test, a first cable is connected between a light source and a light receiver, and the light at the receiver is recorded. The amount of light measured at the receiver is reduced by the losses at the connection to the light source and the losses in the first fiber cable. It is also reduced by the losses at the light receiver, but these losses are negligible because the light receiver is larger than the cone of light from the end of the fiber. The first measurement is used as a reference, and the losses in the connection to the light source and losses in the fiber are thereby canceled in the final test results. In the second step of the test method, a second cable is connected between the first cable and the light source, and the light at the receiver is again recorded. The light measurement now is reduced by the losses of the first measurement step plus the losses in the fiber of the second cable and losses from the connection between the first cable and the second cable. When the first reading is used as a reference, the losses of the connection and the losses of the second cable are isolated. In the third step of the test method, the connector is rotated and the measurement is repeated at predetermined, equidistant angles. The loss measured...